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The Good City

Ash Amin

[Paper first received, October 2005; in final form, January 2006]

Summary. Can the contemporary city qualify as the topos of the good life, as it has in classical literature on human emancipation? As geographical entities, cities are hardly discernible places with distinct identities. They have become an endless inhabited sprawl without clear boundaries and they have become sites of extraordinary circulation and translocal connectivity. Similarly, sociologically, contemporary cities do not spring to mind as the sites of community and well- being. For the vast majority of people, cities are polluted, unhealthy, tiring, overwhelming, confusing, alienating. Politically, too, the contemporary city bears little resemblance to imaginings of the times when urbanism stood for citizenship, the ideal republic, good government, civic behaviour and the ideal public sphere. The politics of emancipation with a big ‘P’ is no longer a particularly urban affair in either genesis or practice, having given way to national and global institutions and movements. What remains of the urban as demos in these circumstances? At one level, clearly very little, as one instance in a wider demos or demon that pulls in many directions. This said, the urban remains an enormously significant formative arena, not only as the daily space of over half of the world’s population, but also as the supremely visible manifestation of difference and heterogeneity placed together. Urbanism highlights the challenges of negotiating class, gender and ethnic or racial differences placed in close proximity. It also profiles the newness that arises from spatial juxtaposition and global flow and connectivity, forever forcing responses of varying type and intensity in the face of negotiating strangers, strangeness and continuous change. Possibilities thus remain for continuing to ask about the nature of the ‘good city’. This paper outlines the elements of an urban ethic imagined as an ever-widening habit of solidarity built around different dimensions of the urban common weal. It offers a practical urban utopianism based around four registers of solidarity woven around the collective basics of everyday urban life. These are ‘repair’, ‘relatedness’, ‘rights’ and ‘re-enchantment’.

Introduction

Models of the good city—of the kind of urban order that might enhance the human experi- ence—invariably tend to project from the cir- cumstances of the times. At the origins of urban settlement, providing the means of defence against invasion, starvation and the elements would have featured high on the

list, while the Greco-Roman city would have measured its worth through its capacity to embellish the built environment, project its power and develop the deliberative, political and creative energies of some if its citizens. In the context of the filthy and overcrowded Victorian industrial city, the battle against want, poverty, grime and disease would have been coupled to moral crusades of various

Urban Studies, Vol. 43, Nos 5/6, 1009–1023, May 2006

Ash Amin is in the Department of Geography, University of Durham, South Road, Durham, DH1 3LE, UK. Fax: 0191 334 1801. E-mail: [email protected]. The author is grateful to several colleagues at Durham for taking the time and care at short notice to read an earlier draft. The author thanks Ben Anderson, Steve Graham, Paul Harrison, Gordon MacLeod, Susan Smith, and Philip Sheldrake for their generous comments and critical insight.

0042-0980 Print=1360-063X Online=06=5–61009–15 # 2006 The Editors of Urban Studies

DOI: 10.1080=00420980600676717

sorts, ranging from temperance and manners to bourgeois charity and revolutionary zeal, in defining a civilised urban existence. In our times, the basics of urban infrastructure once again come to the fore in cities recover- ing from war and destitution, while in many cities of the global South access to the staples of life, clean water, energy, shelter and sanitation remain the targets of urban pro- gress, awkwardly juxtaposed with definitions of human advancement in prosperous cities based on high-income consumer lifestyles and bourgeois escape from the ugly or danger- ous aspects of urban life.

Such contextual influence makes it highly problematic to assume that models of the good city can travel unmodified across space and time. Indeed, the history of practical effort to improve human life in cities is one that has worked the fine grain of circumstance and place. Yet, paradoxically, this history has also been influenced by universalistic imagi- naries of the good life, with cities placed at the very heart of the various projections on offer. For example, utopian thought in its various iterations through time, from the ideas of Plato, St Augustine and Thomas More to those of de Sade, Bellamy and le Cor- busier, has imagined the logos of utopia to be an ideal city, a visible emblem of order and harmony. The city of concentric circles of function and purpose, the city of modernist planning, the city of contemplation or passion ordered through particular architec- tural rules, can all be seen as blueprints for urban organisation in different parts of the world, intended to deliver the good life, however, defined.

According to Zygmunt Bauman (2003), our times, for various reasons have begun to dis- pense with universalistic models of the good life often associated with the ideal territorial community. One reason is the systematic unhinging of territorial moorings and obli- gations by globalisation in its various guises. Another is the displacement of strong and lasting senses of community by multiple and ever-changing social and cultural attach- ments. A third reason is the impossibility of teleology and heaven in an age of fleeting

pleasures, instantaneous gratification, con- stantly changing desires and scepticism towards order and ordering, especially of mass collective nature. Finally, Bauman argues that organising élites in a global market society are largely responsible only to themselves and their like, no longer inter- ested in societal projects. Utopia has lost its logos, meaning, appeal and organising force, as meanings of the good life shift to immedi- ate, temporary, private and hedonistic projects.

Whether Bauman’s analysis of contempor- ary modernity holds is not a question I wish to pursue here. Instead, I want to ask if the developments that concern Bauman might not be read as an invitation to rethink ideas of the good life, away from longings for faraway and deracinated citadels of achieve- ment that need no further work, towards a pragmatism of the possible based on the con- tinual effort to spin webs of social justice and human well-being and emancipation out of prevailing circumstances (see also Pinder, 2002 and 2005). Such an understanding, potentially, might even allow a more hopeful reading of the multiple and mobile attach- ments freed from the moorings of territory and nation that Bauman chooses to interpret as a post-utopian presentism without promise.

In prising open such a possibility, my intention is not to rewrite the ills of capitalist globalisation as the goods of a new utopia. Rather, it is to look at the contradictions and possibilities of our times as the material of a politics of well-being and emancipation that is neither totalising nor teleological. Such an approach accepts that utopia is not a dream of the attainable, but an ‘impossible place’ following Foucault, expressing a ‘hope in the not-yet’, based on many practices “of transformative intervention” that strive “to give and find hope through an anticipation of alternative possibilities or potentialities”, as Ben Anderson (2005, p. 11) has recently argued. It retains the original idea of an eman- cipated society, but now harnessed to careful obligations in the arena of personal politics, insurgent design, collective responsibilities and human rights (Harvey, 2000). It accepts

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that the constitutive multiplicity of our times is both capitalist entrapment and opportunity for a plural democracy drawing on possibili- ties that are more than capitalist trickery (Amin and Thrift, 2005a).

The Good City?

But can the contemporary city qualify as the topos of even this more pragmatic interpret- ation of the good life, given its increasingly indistinct geography as a place and its vast sociology of hopelessness and misery? As geographical entities, cities are hardly dis- cernible places with distinct identities. They have become an endless inhabited sprawl without clear boundaries and they have become sites of extraordinary circulation and translocal connectivity, linked to processes of spatial stretching and interdependence associated with globalisation. In turn, however, complex processes of global urban- isation are rendering cities into all-embracing social spaces as the world and its ways pours into them, such that they are increasingly read as emblems of the modern (Amin and Thrift, 2005b).

Similarly, sociologically, contemporary cities do not spring to mind as the sites of community, happiness and well-being, except perhaps for those in the fast lane, the secure and well-connected, and those excited by the buzz of frenetic urban life. For the vast majority, cities are polluted, unhealthy, tiring, overwhelming, confusing, alienating. They are the places of low-wage work, inse- curity, poor living conditions and dejected isolation for the many at the bottom of the social ladder daily sucked into them. They hum with the fear and anxiety linked to crime, helplessness and the close juxtaposi- tion of strangers. They symbolise the isolation of people trapped in ghettos, segregated areas and distant dormitories, and they express the frustration and ill-temper of those locked into long hours of work or travel. Cities still abound with all manner of acts of mutuality, friendship, pleasure and sociality (Thrift, 2005), but to project the good life from so much urban fracture seems a step too far.

Politically, too, the contemporary city bears little resemblance to imaginings of the times when urbanism stood for citizenship, the ideal republic, good government, civic beha- viour and the ideal public sphere. The politics of emancipation with a big ‘P’ is no longer a particularly urban affair in either genesis or practice, having given way to national and global institutions and movements. In turn, the public arena and public culture in general have not been reducible to the urban for a long time. The urban political has become part of a much larger political machinery, with the centre located elsewhere, spatially or institutionally. This is not to say that cities have ceased to be political spaces. Far from it, for they remain sites of consider- able political agency. For example, global cities have become the political base of the global capitalist class and of many globally oriented social movements, along with spark- ing new political impulses stemming from the urban juxtaposition of the rich and the poor (Sassen, 2003). But this cannot be confused with a politics of the good life, which no longer projects outwards from the city.

Any habit of urban solidarity is assailed by the incursions of state power and surveillance, by social practices and affective cultures formed in a highly dispersed and multilayered public sphere, and by orderings that include many forms such as parliaments and assembled things and virtual objects where politics is practised (Latour, 2005). Indeed, in the con- temporary geopolitics of shame and tame based on a US-led re-equilibration of the world in the name of the war on terror, the very idea of the city and what it means, is being redrawn through experiments with new spaces of exception, such as extra-terri- torial camps and military-run cities, where there are no legal rights and protections, where human rights are abused, and where new security systems are in place for intense and intrusive surveillance. A new template for the conduct and regulation of civic life is being drawn in these spaces.

What remains of the urban as demos in these circumstances? At one level, clearly very little, only as one instance in a wider

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demos or demon that pulls in many directions. This said, the urban remains an enormously significant formative arena, not only as the daily space of over half of the world’s popu- lation, but also as the supremely visible mani- festation of difference and heterogeneity placed together. While I would not go so far as Rainer Bauböck’s proposal that

We should conceive of the city as a political space inside the territorial nation-state where multicultural and transnational iden- tities can be more freely articulated (Bauböck, 2003, p. 142).

the ‘being-togetherness’ of life in urban space has to be recognised, demanding attendance to the politics of living together. The human condition has become the urban condition. In 1950, one-third of the world’s population lived in cities but, by 2050, the figure is expected to rise to two-thirds, or 6 billion people. Then, by 2015, each of the world’s 10 largest cities (Bombay, Tokyo, Lagos, Shanghai, Jakarta, São Paolo, Karachi, Beijing, Dhaka and Mexico City) will house between 20 and 30 million people. Arguably, even those people who are not included in these figures owe most of their existence to the demands that cities place on the world economy. Thus, no discussion of the good life can ignore the particularities of the urban way of life, ranging from the trials of supply, congestion, pollution and commuting, to the swells of change, scale, inequality, distribution and sensory experience in urban life. The daily negotiation of the urban environment has become central in defining the privations, provisions, prejudices and pre- ferences of a very large section of humanity.

Then, as already hinted, the urban comes with specific possibilities as an arena of direct democracy or engagement, described by some as a formative politics of citizenship (Holston and Appadurai, 1999). Urbanism highlights the challenges of negotiating class, gender and ethnic or racial differences placed in close proximity, with the spatiality of the city playing a distinctive role in the negotiation of multiplicity and difference. It profiles the newness that arises from spatial

juxtaposition and global flow and connec- tivity, forever forcing responses of varying type and intensity in the face of negotiating strangers, strangeness and continuous change. According to Saskia Sassen (2003), the plenitude of sites, spaces, institutions and associations of organisation and mobilisation in cities potentially returns the urban as a stra- tegic space for oppositional politics as repre- sentative politics with a big ‘P’ becomes increasingly corporatised. More modestly, it could be argued that the myriad bolt-holes that are to be found in cities provide some possibility to the millions of dispossessed, dis- located and illegal people stripped of citizen- ship to acquire some political capital (Amin and Thrift, 2005a). Then, urban public space, even if increasingly privatised and con- trolled, remains the visual emblem of the public culture as well as the sites of gathering where some aspects of this culture are formed and performed.

The good city might be thought of as the challenge to fashion a progressive politics of well-being and emancipation out of multi- plicity and difference and from the particulari- ties of the urban experience. This is a politics of small gains and fragile truces that con- stantly need to be worked at, but which can add up, with resonances capable of binding difference as well as reining in the powerful and the abusive (Sandercock, 2003; Hollen- bach, 2002).

In this paper, I wish to outline the elements of the good city imagined as an ever-widening habit of solidarity built around different dimensions of the urban common weal. My argument is that such a habit can play a vital role in nudging the urban public culture— expressed in the acts and attitudes of govern- ment, the media, opinion-makers, civic organ- isations, communities and citizens—towards outcomes that benefit the more rather than the few, without compromising the right to difference that contemporary urban life demands. The result is the city that learns to live with, perhaps even value, difference, publicise the commons, and crowd out the violence of an urbanism of exclusionary and privatised interest.

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How is it possible to build a chain of soli- darity out of multiplicity? How can a culture of care and regard become the decisive filter of intersubjective relations (Hage, 2003), cor- porate behaviour and public engagement when the historical momentum is so decisi- vely in the direction of urban disregard, intol- erance and self-interest? How can such a culture be sustained across the vast spaces that count as part of the same city in none but name? How can it be achieved when the composition of the urban population of the city is constantly changing due to the ebb and flow of migration and mobility?

These are central questions to which there is no easy answer, but what a practical urban utopianism offers is credibility in a shared commons and active public engagement as a counterweight to the disinterested individual- ism that has come so to dominate. In some sense, it draws on the same powers of capture and enthralment of distant others that market capitalism has perfected, but now harnessed to a different ethic of human engagement and fulfilment. Its effectiveness lies in a politics of alterity given practical expression and demonstrable effect rather than in any magical powers to wish away the seductions, distortions and divisions of market individualism. It remains experimental in its practices and outcomes, but no less significant as a model of the good city.

Registers of Urban Solidarity

Against the backcloth of corporatist urban planning in the US and an absent social state, John Friedmann (2000) has identified housing, affordable health care, reasonably remunerated work and adequate social pro- vision, as the four pillars of the good city. The key actor, for Friedmann, is

an autonomous, self-organising civil society, active in making claims, resisting and struggling on behalf of the good city within a framework of democratic insti- tutions (Friedmann, 2000, p. 471).

In a similar vein, I wish to identify four regis- ters of urban solidarity that engage with

multiplicity through the collective basics of everyday urban life. These are repair, related- ness, rights and re-enchantment—which could be labelled as the four Rs of contemporary urban solidarity.

Repair

Cities possess a machinic order composed of a bewildering array of objects-in-relation whose silent rhythm instantiates and regulates all aspects of urban life—economic, political, social and cultural (Amin and Thrift, 2002). It includes many mundane objects, such as road signals, post-codes, pipes and overhead cables, satellites, office design and furniture, clocks, commuting patterns, computers and telephones, automobiles, software, schedules and databases. These are aligned in different ways to structure all manner of urban rhythms including goods delivery or traffic flow systems, Internet protocols, rituals and codes of civic and public conduct, family rou- tines and cultures of workplace and neighbourhood.

Nigel Thrift (2005) has described this machinery as a ‘technological unconscious’ that provides the ‘interactional intelligence’ without which urban life would end. It makes things work, it facilitates circulation, it guides economic conduct, it channels distri- bution and reward, it sets the ground rules, it provides orientation, and it designates the spaces, activities and people that count (for example, by demarcating investment zones and slump zones, or the economically worthy and the undeserving). It is the life- support system of cities (Gandy, 2002), so evident when such things as sanitation, clean water, electricity, telecommunications and transport systems, medical technologies and many other survival technologies, are lacking or fail. But, it is also a transhuman material culture bristling with intentionality. Software code, timetables, traffic signals, zoning patterns, lists, databases, grids and the like, can be seen as the ‘hidden hand’ of urban social organisation and behaviour. They act as the everyday filter through which society reads and accepts social

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boundaries and demarcations, measures the achievements of modernity, assesses what it is to be modern and naturalises forms of auth- ority and control that made visible in their raw power would face considerable scrutiny and opposition. Thus, identities, material supply, functionality and social power are all tangled up in this urban machinery.

A politics of the good city has to grasp the ambiguous centrality of this hidden republic and subject it to democratic scrutiny and use. At one level, this is a matter of making public, ridiculing and neutralising the urban uses of technology as a weapon of social control. For example, as Steve Graham (2005, p. 5) argues, contemporary urbanism is impregnated with “new software-sorted geographies” silently demarcating the worth of particular zones and sections of urban society, used to exercise pervasive scrutiny and state/market authority. Graham notes, for example, the proliferation of biometric technologies that rapidly sort desirables and undesirables; the increasing reliance of com- panies on sophisticated data-gathering and classification software, in order to differen- tiate between premium customers and ‘sca- vengers and surfers’; the use of GIS and GDIS technologies that re-engineer the social map of the city by demarcating desir- able areas and taboo areas; and the use of new facial recognition software in CCTV sur- veillance to match individuals on the street to photo-fits of threat, so that the guilty can be named before the event.

There is a limit to how far the technological can be decoupled from the social when it has become so constitutive, but there is plenty to be done in terms of revealing the power dynamics of “values, opinions and rhetoric . . . frozen into code” (Bowker and Leigh- Star, 1999, p. 35; cited in Graham, 2005, p. 1) and placing them under binding public scrutiny and influence, so that the abuses of software can be revealed and then confronted with alternatives that work for citizens. This is no easy task given the hidden nature of the technological unconscious and the powerful interests behind it. However, a first step in a ‘new politics of repair’ is revelation and

open public debate on alternative ways of weaving technology into the urban social. The greater the impetus, the greater the pressure on states and élites to reconsider what for so long has been taken for granted.

At another level, so pervasive is the interac- tive intelligence of the techno-space (for example, software systems nested in homes, cars, pockets, implants, hospitals, schools, offices, roads, shops, pipes and ducts, and often talking to each other), that cities would shut down or spiral in unanticipated directions when this techno-space is threatened. This is precisely why an elaborate infrastructure works day and night to prevent or fix failure. The technological unconscious, as Nigel Thrift (2005) notes, is what allows cities to avoid the collapse that any vast and complex system of bits that need alignment and co- ordination can so easily suffer, and also to bounce back rapidly to normality after disrup- tions or disasters of various sorts.

The good city, then, is the city of continual maintenance and repair, underpinned by a complex political economy of attention and co-ordination. London managed to bounce back after 7/7 with remarkable speed as a machine of movement, work, livelihood and daily life, as the technological uncon- scious—through an extraordinary effort of co-ordination between myriad institutions and the public—kicked in to repair the city and its global connections. New Orleans, in contrast, due to the tardy response from the federal authorities as well as the sheer scale of destruction, has been switched off as a city and, while speedier recovery can be expected as the political will to do something returns, it will take some time to rebuild the technological unconscious that has thus far ensured rapid repair and maintenance. The city is discovering the chaos, risk and degra- dation that so many cities in the global South have suffered for so long owing to the deficiencies of the urban infrastructure.

The well-functioning city, however, does not reward all. It comes with its own political economy of supply and provision, discrimi- nating against the poor and the marginal. Thus, no discussion of the good city in terms

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of the politics of repair can ignore the need to ensure universal and affordable access to the basics of shelter, sanitation, sustenance, water, communication, mobility and so on. And when such a commitment is explicitly demonstrated, as the city of Bologna did in 1978 by ending bus fares, and then again in 1998 by providing free Internet access, it adds to the urban unconscious a habit of soli- darity as the city comes to be experienced as the city for all.

But there is more. There has to be an expli- cit politics of repair and maintenance, one that attends to the silent republic of things that makes cities work not only when there is a threat of shut-down, but at all times so that a preventative and curative infrastructure is in place. This requires a progressive politics focusing on central aspects of service priva- tion in especially the global South that make life so miserable for so many within cities that suffer constant blackouts, by intervening in an increasingly intricate system of soft- ware-based auto-regulation in order to know the system, prevent new auto-corrections that are harmful, and reduce lock-out. As Stephen Graham and Nigel Thrift (2005, p. 27) note, “repair and maintenance are not incidental activities. In many ways they are the engine of modern economies and societies” and nowhere more so than in cities that have so come to rely on technology for their survival and well-being.

Relatedness

Closely linked to the register of repair is the register of relatedness. Cities are riddled with the misery, anxiety and desperation of the disconnected and excluded. They always have been. Now, however, there is a new scale and intensity of disconnection associ- ated with the mass migration of the world’s population to cities, the displacement of welfare commitments by market individual- ism, the expansion of the illegal and precar- ious economy in the context of jobless growth, the evacuation of capital from risky and non-lucrative areas, the growing discon- nection of the rich from the poor in all walks

of urban life, and the disjuncture between income and spend in a credit/debt economy which thrives on insecurity.

In this context, the good city has to be ima- gined as the socially just city, with strong obli- gations towards those marginalised from the means of survival and human fulfilment (Wacquant, 1999). These are obligations that should draw on a solidarity of human rights and recognise the constitutive role of the distant other in whatever counts as the social ‘ours’, rather than, as has been the case in the history of modern welfare, drawn on a solidarity of charity or instrumentalist support for the fallen insider within a pre- defined community of belonging (national, ethnic or other). The result is an equal duty of care towards the insider and the outsider, the temporary and the permanent resident. In the good city, the duty of public service through adequate welfare measures relating to financial and personal security, education, health care, shelter and so on, should extend to those least able to pay for these basics but who are most in need, ranging from disen- chanted youths and broken households, to the many migrants, minorities and itinerants that seek refuge in the city. An equivalence of right has to be assumed between those in the mainstream and those on the margins, prior to fiscally driven decisions on what scale of welfare provision is judged to be sustainable.

Is such an expanded urbanism at all realistic at a time when senses of the human collectiv- ity have all but disappeared? The ethos of unconditional hospitality that Jacques Derrida (2001) has invoked from Europe’s cities in the name of their old duty to provide sanctuary when life outside the city was barely protected has either been long forgotten by modern-day universal welfare systems or it has been gradually redirected by states towards targeted social groups under pressure from neo-liberalism. One con- sequence of the restructuring of the national welfare state has been increased pressure on politicians, élites and civic associations closest to the problems—in cities—to provide a solution. Yet, here too, the grain is

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decidedly against the city of universal care, as business and professional élites become ever more tied to transnational communities, press- ing on city leaders to serve their particular local needs (Sassen, 2002). The city for all, therefore, is by no means guaranteed, lacking as it does, considerable opposition from local élites as well as external support.

But a ‘politics of relatedness’ is becoming increasingly necessary not only because of the cost and wastage associated with wide- spread disconnection, but also because of the damage wrought by the fear, hate and anxiety that feeds on division and envy in urban life. It is becoming unavoidable to address the consequences of unequal pro- vision, which include class segregation, endless surveillance, civic disruption, urban violence, fear of the stranger, suspicion of youths, immigrants and asylum-seekers, and generalised anxiety and caution. The inclusive city, although undeniably taxing on the public purse and requiring sustained public and civic effort, is also the city of untapped potential and expanded human and social capital. Most importantly, it is the city that extracts an opportunity for individual and collective advancement out of urban multiplicity and mobility.

Solidarity based on the universal provision of the basics of existence and human associ- ation is however no guarantor of social mutuality and respect for difference. Contem- porary urban multiplicity is linked to a public culture of misanthropy, tribal affiliation and self-interest, an explicit denial of difference feeding on the comfort of welfare support in some instances. There is a ‘nasty’ politics of hate ingrained as an urban affect (Thrift, 2005). Against such obduracy, heightened by the suspicion faced by the most visible and vulnerable subjects of global displacement such as immigrants, asylum-seekers, Travel- lers and the homeless, an urban solidarity of relatedness can barely escape addressing the ethic of conduct among strangers. This is an issue that has long interested urban theorists, from Simmel and Benjamin who saw a combi- nation of indifference, inquisitiveness and alienation in urban social mixture, to

Mumford and Sennett who anticipate civic interaction under certain conditions of man- agement of public space.

The present times are particularly uncom- promising in this regard, due to growing urban segregation, the collapse of universals serving to bind difference, an eroding urban commons, and increased legitimacy for group isolationism in private and public life. Living with difference is becoming a test of endurance as the urban public comes to accept that multiplicity is best tackled though isolation or, depending on who is involved, ejection. A case in point is the rampant suspi- cion that has grown of Muslims as they go about their daily business after 9/11 and 7/ 7, grotesquely feeding on complacent neo-Conservative babble about incompatible civilisations. The actions of the very few— militant Jihadis—have been allowed to feed nationalist frenzy demanding the taming or ejection of an entire faith group on grounds of cultural incompatibility a nationalist security. Such extreme reaction, along with other examples such as the contempt heaped on asylum-seekers or Travellers, is borne out of a fractured commons in an increasingly tribal or self-centred public culture.

Is there a specific role for cities in rekind- ling a ‘habit of solidarity’ towards the stran- ger, based on recognition (rather than consensus or affect)? I have argued elsewhere that much of the required intervention trans- cends the urban (Amin, 2002). This includes stripping national cultures of belonging of racial and ethnic moorings in preference for collective standards thrown up by a living cos- mopolitanism or by politically defined national virtues. It includes building and sus- taining a certain ease with unassimilated difference and agonistic disagreement in the public domain, with the help of the media, politicians and opinion-formers. It also includes vigorous and steadfast implemen- tation of legislation against incitement and prejudice, together with a rich opportunity structure for social mobility and individual enhancement.

But cities also have a place. The everyday negotiation of diversity is crucially influenced

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by the public ethos of places, which draws on many inputs, from neighbourhood movements and city-centre dynamics to the habits of public office, the media and other local insti- tutions, public events and shared spaces. The thin line between suspicion and tolerance is demarcated only too frequently around prosaic negotiations of diversity, so part of the politics of relatedness in the good city has to be about working on the prosaic as the space of strange (be)longings, the site of cultural transgression. This means returning the city’s public spaces to mixed public use, without excessive sur- veillance, gating, privatisation or humiliation of minorities, but with adequate security against the violent or against corporatist hom- ogeneity (Low, 2003). It means experimenting in everyday situations that bring people from different backgrounds to work together in pro- jects of common interest, so that a habit of intercultural formation emerges (Amin, 2002; Body-Gendrot, 2000; Keith, 2005). Typical examples include experimenting with mixed sport teams in schools and col- leges, cultural exchanges in crèches, growing food from around the world in communal gardens and multicultural events in housing estates. It means open publicity for cultural transgression based on multiplicity, through imaginative and bold experiments such as sporting events and public art that bring together warring youth factions, legislative theatre in workplaces and closed communities to confront prejudice, urban visuals that iconi- cise mixity and hybridity (Deutsche, 1996), and perhaps even bouts of civic duty for those particularly hateful of difference. The sum is the city of restless mobilisation of a public culture based on shared space and only ever partial claim by individual groups over the commons (Gandy, 2002).

The achievements of such a public culture are in part to ensure the reconnection of those at a disadvantage, in part to convert urban misanthropy into an ethic of mutual regard towards those unlike us, and in part to foster a public culture of care around the principle of relatedness. This is not a public culture of forced mixture with the stranger and strangeness, but one that demands

acceptance of relatedness as central to urban existence. This means extending the shared commons, facilitating the negotiation of difference and preventing harm, and minimis- ing the right to disconnect (especially seces- sion movements that have emerged in recent years seeking escape from urban governance structures that do not suit; see Boudreau and Keil, 2001).

Rights

The register of relatedness is closely linked to the register of rights to the city, famously defended by Henri Lefebvre (1996) as the right of all citizens to shape urban life and to benefit from it. The right to participate pre- sumes having the means and the entitlement to do so. Many urban-dwellers have yet to acquire this right. In the global South, we see this in urban planning practices driven by the needs of the economically and politi- cally most powerful and in the eviction or stripping down to bare life of the masses. In the global North, we see it in the form of growing vilification and intolerance of immi- grants, itinerants, asylum-seekers and youths, and in the gradual alignment of urban élites and central urban spaces to the interests of global capital. The contemporary city remains the city of rights restricted, notwith- standing historical gains made by subjects in certain parts of the world as citizens formally endowed with social, economic and political rights.

In precisely these parts of the world, a new paradox of rights has arisen, involving con- straints on the civil freedom of many urban- dwellers in the name of the individual rights of the so-called majority. For example, the rapid rise of surveillance technologies is both an encroachment upon civil liberties and a means of protecting the public against harm. Similarly, the injustices of racial segre- gation pursued through discriminatory plan- ning and housing allocation policies are complicated by moves by ethnic minorities to live among their own communities in order to preserve cultural integrity and ensure personal safety. In turn, the rules of

THE GOOD CITY 1017

order in the machinic city, silently re-engin- eering social hierarchies through new soft- ware-sorted technologies, are also the template through which the city functions as a whole, forcing a dependence without which the discriminated would be worse off. The question of urban rights, therefore, is not straightforward, as many liberal societies come to assume that rights should not bring enhanced freedom for all.

This paradox is being increasingly exploited by urban managers to restrict voice and dissent in urban public life, against a background of growing commoditisation, homogenisation and privatisation of urban public space. Urban marginals, protesters, drop-outs, itinerants, minorities and the like, are all quickly tracked, gathered and shunted on as threats to an urban public space valued increasingly for its worth as a consumer and corporate space (Smith, 1996; Mitchell, 2003; MacLeod, 2002; Graham, 2004; Coleman, 2004). The result is that the prin- ciple that urban public culture might be shaped through the free hand of a plural and equal citizenry has been compromised by an urbanism of differentiated rights and pre- ordained expectations from the shared commons. The Lefebvrian idea of urban life made through the creative impulses of all its dwellers has become redefined as a threat to urban order.

On the occasions, therefore, when the role of urban public space as the arena of dissent and protest is invoked, the acts are condemned as an aberration, a violation of urban stability. This is vividly illustrated by the official anxiety that surrounded the riots in Bradford, Oldham and Burnley in the summer of 2001 when young Asians in these north-England ex-textile towns clashed with White youths and the public authorities. These riots were widely described by opinion-formers and offi- cials as race riots, and were condemned as emblems of minority ethnic disconnection from mainstream life, values rooted in Islam and diasporic tradition, social isolation and segregation, and an anti-British race politics. At the time, and especially more recently as public anxiety has grown over the realisation

that the London bombers on 7/7 came from similar backgrounds in nearby cities and towns, there has been no shortage of calls for mixed schools and mixed housing, better integration into mainstream culture, tests of loyalty to Britain and core British values, and moderation of ethnic difference. In short, Asians have been asked to prove their Britishness as a condition of entry into the city.

The irony, though, is that the rioters were young Britons who were bi-lingual, perfectly at home with British modernity and Islamic tradition, politicised and unequivocal about their identities as British Muslims. It is increasingly clear that their anger was aimed at the lack of economic opportunity, negli- gence by the public authorities and commu- nity elders, racism and racialised institutional practices, an enduring history of taunt and intimidation, and material depri- vation and marginalisation (Kundnani, 2001). These were civic riots by a group wanting to claim the public turf as full British citizens and not the riots of cultural aliens (Amin, 2002). They were a test of the terms of public visibility and claim in a multi- cultural and multi-ethnic society. Yet, because they were disturbances that involved a visible minority that could be branded culturally and ethnically, they were debated as matters of national integration, core British values, minority obligations to the nation, and other familiar tropes of the language of assimila- tion, integration and multiculturalism, that forever plagues ethnic minorities in Britain.

The ultimate test of the good city is whether the urban public culture can withstand plural- ism and dissent (Pred, 2000). This is not to provide licence for gratuitous protest or the violence of those bent on harm. Instead, it stands for “participative parity” (Fraser, 2005, p. 87) in a public sphere, such that new voices can emerge, the disempowered can stake a claim, the powerful can cease to hold free rein, and the future can be made through a politics of engagement rather than a politics of plan (Mouffe, 2000). On the part of civic leaders, this requires a certain confidence in the creative powers of

1018 ASH AMIN

disagreement and dissent, in the legitimacy that flows from popular involvement, and in the vitality thrown up by making the city available to all. Far too much of contemporary urbanism is driven by the need to crush social vitality and to raise the alarm against non- conformity. The result is the city of fear and circumspection, not the city confident with difference and multiplicity. As Engin Isin (2002, p. 282) avers “we may owe the exist- ence of politics not to citizens, but to stran- gers, outsiders, and aliens”.

The city of open rights can become a place of violence against those least able to defend themselves or a place of self-centred advance- ment. My argument, however, is that, placed in the context of a vigorous and confident urban public culture, the open city is better equipped to channel antagonism towards deliberative and agonistic disputes in the public arena capable of some degree of recon- ciliation or mutual recognition (Young, 2002; Connolly, 2005). Such a ‘heterotopic’ urban public culture (Keith, 2005) is one that works with the multiplicity and transience that has come to define urban life, confident that it can build and extend solidarity, but also deal with dissent and disagreement in creative ways that minimise damage. On its own it cannot stop instituted or open violence, but it can expose its wrongs as well as reveal alternatives rooted in a habit of solidarity.

Re-enchantment

The final ‘R’ is re-enchantment. The good city celebrates the aspects of urban life from which spring the hopes and rewards of association and sociality. Re-enchantment in the history of urban utopian thought has tended to focus on a paradise to come, usually around grand projects designed to engineer human life materially, morally and ethically. In times when the engineering has yielded immediate gains through ambitious urban design and planning exercises to provide mass housing, sanitation, security, clean air and water, and other basic services, it has alleviated the misery of masses trapped in appalling urban conditions. The significance of such

intervention as a form of re-enchantment should not be lost in a present trapped between neo-liberal onslaught on the pro- visions secured under socialist and social democratic planning and the general scepti- cism that has grown of modernist urban plan- ning (Gandy, 2005). The aesthetic complaint and sensory deprivation, however, real, were the children of mass provision of the basics of life. Many a form of urban enchantment— from jazz and Tupperware parties to mass political meetings and open air cinema— grew out of the bland and uniform regularities of the modernist ethic of care.

My interest in drawing this example stems from thinking about sociality as a form of urban solidarity, rather than any particular interest in defending the aesthetics of moder- nist urban planning. It is the prospect for a certain kind of sociality that comes from par- ticular forms of gathering in public spaces upon which I wish to focus. The sites I have in mind are the associations, clubs, car-boot sales, restaurants, open spaces, bolt-holes, libraries, formal and informal gathering- places, and multitude of friendship circles that so fill cities (Thrift, 2005). These sites form an essential component of the urban public culture and are an important filter through which urban life is judged as a collec- tive social good. At their best they are the civic spaces imagined by urban visionaries such as Richard Sennett (1998) and Richard Rogers (Rogers and Powers, 2000) to arise from free engagement and visibility among strangers in the city’s public spaces. Along with the sociability associated with partici- pation in family, consumption and insti- tutional networks, the vitality of these public spaces as sites that combine pleasure with the skill of negotiating difference, acts as the gauge of civic ownership and civic behaviour in a city (Sheldrake, 2001; Demos, 2005).

There can be no denial that contemporary urbanism has put the link between free associ- ation and civic inculcation to the test. The neo-liberal erosion of publicly owned or pub- licly maintained spaces, together with the increasing surveillance and ejection of unde- sirable social groups within them, has

THE GOOD CITY 1019

redefined the principle of free association as an intragroup activity rather than as a gather- ing of strangers around shared pleasures. In turn, urban association is increasingly defined by spectacle and consumption, gath- ered around urban tourism, heritage experi- ence, unending consumerism, ostentatious display, sensory seductions and many other commoditised forms of socialisation (Miles and Miles, 2004). This form of urban enchant- ment certainly brings strangers together, but whether the result is enhanced civic regard remains a moot point. Thirdly, urban associ- ation has become a highly dispersed activity, involving ties with distant others enabled by the virtual media, travel, diaspora links, the circulations of public culture and so on. Urban association now co-exists with so many stretched geographies of association that to privilege urban sources of civic incul- cation is indefensible.

So, why bother with the urban sources of civic sociality? Precisely because of the scope it offers for making the urban visible as a site of civic promise. Glaring at the ‘new urbanism’ that has fallen in love with the romance of compact cities, mixed neighbour- hoods, pedestrian thoroughfares, classical architecture and cohesive communities, is the daily metropolis whose frenzy and pace con- ceals a multitude of spaces of association, from workplace and educational sites to angling clubs and public gatherings. These are the lungs of social respite in the fast city, but also the prosaic spaces of civic inculcation. To value, publicise and maintain these spaces is to recognise what is already there as a rich source of civic virtue in most cities, but is increasingly displaced by new engineerings of sociality that have yet to prove their worth.

The register of re-enchantment, however, can strive for more, by experimenting with everyday public spaces for transformative purposes. In part, this is a matter of new uses explicitly designed to disrupt existing convention. One example is provided by the rich legacy of popular radical urbanism in forms as diverse as liberation theology, legis- lative theatre and community art and mass events of the political Left—today most

emblematically expressed in the cultural activities of the anti-globalisation movement at World Social Forum meetings in different cities. In all these examples, urban gathering is used as a means of mixing protest, edu- cation, pleasure and enchantment in the name of solidarity, new awareness, and a shared commons in and beyond the city; gath- ering credibility for many militant particular- isms (Featherstone, 2005). Another example is the use of public art to signal cultural het- erogeneity, in the way that cities such as Bir- mingham have experimented with in recent years to celebrate publicly multiculturalism. The initiatives have included comic strips placed in the back seats of taxis recounting the recollections of Asian cab drivers to the artist as they drive along, blindfolded walks around the city centre to encourage sensory experience of the city without the faculty of vision, public sculptures that deliberately play on the mixed racial narratives of the city, murals that record problematic events and histories in order not to forget, and photo- graphic projections of faces on the street on public buildings to publicise multiethnicity (Kennedy, 2004). How successful these public expressions of ethnic and racial solidar- ity are in combating race hate is a matter of conjecture, but they provide a powerful official signal for what the public culture of a city should be.

Embedded in both examples of urban re- enchantment is an important principle of rupture without finality in the democratically negotiated city (Parker, 2004). Temporary coalitions arise to disrupt preceding ones in the name of an expanding urban solidarity, but are themselves surpassed by new exper- iments, so that new actors and new impulses can be grasped as the city itself evolves.

Conclusion

In making my case for the good city, I have chosen to redefine the good city as an expand- ing habit of solidarity and as a practical but unsettled achievement, constantly building on experiments through which difference and multiplicity can be mobilised for common

1020 ASH AMIN

gain and against harm and want. In articulating the good city as an ethic of care incorporating the principles of social justice, equality and mutuality, I have deliberately chosen to avoid certain shibboleths of urban possibility that have become fashionable, centred around proclamations of new urban centrality.

One of these is the rediscovery of urban community, in the form of empowered neigh- bourhoods, abundances of social capital, face- to-face contact, and generally the goodness of urban social cohesion. I see little of all of this in contemporary cities, marked as they are by enforcements of introspective community, social attachments that do not cohere, belong- ings that traverse the city into the ether or globally, irreconcilable differences, and distance and separation within a given urban space. The city does not come together as a community or as a community of commu- nities, for there is far too much difference, disagreement, and escape to assimilate. On the rare occasions that it does come together, such as during a catastrophe or a major event, a certain sense of place shared by the many is undoubtedly released, but soon the everyday steps in to demand multiplicity.

Another shibboleth that has arisen again is the idea of the city managed by an enlightened urban élite that attends to the interests of all. The current language invokes powerful mayors, partnerships involving multiple sta- keholders, joined-up urban governance, decentralisation and devolution, and an entre- preneurial openness. All are seemingly reasonable, but in practice cast a veil over the impossibility of central reach over a con- stantly morphing and transjurisdictional city, a usually supplicant relationship with govern- ment and power based elsewhere, and the mis- chief of an itinerant business community forever threatening exit if its demands are not met. The idea of good urban governance is an illusion not only for all that it cannot capture, but also for its panoptic authoritarian- ism veiled as stakeholder democracy. My pre- ference, instead, has been to emphasise the role of an active and distributed democracy based around different registers of solidarity; imperfect and constantly renegotiated.

This is the filter through which I would wish to interpret the questions of urban civi- lity and incivility tackled in this Review Issue. I consider the four registers of solidarity discussed above—repair, relatedness, rights and re-enchantment—as defining influences on the balance between urban civility and its opposites. Together, they shape state and civic orientations to multiplicity in urban life, by defining access to the basics of exist- ence, attitudes to strangers, rights of presence and expression, and the scale and purpose of the shared commons. They act as a kind of democratic audit, through inculcating a par- ticular kind of social ethos. As such, they are often contradictory and surprising in their effect; tackling obviously anti-social beha- viour, but also state panopticism and easy con- demnation of the rights of minorities; providing the means for individuals and col- lectivities to develop civic capabilities, but also making ample space for civic disagree- ment and dissent; and constantly working on the perfectibility of democratic process, but not of forecasting perfect outcomes. What or who counts as civil or uncivil, thus, is a matter of the fine grain daily thrown up for public debate and scrutiny, rather than the product of pure and pre-defined categories of civility and incivility.

A civic politics of getting the urban habit of living with diversity right is one way of thickening the ways in which an increasingly fragmented, disoriented and anxious society can regain some mechanism for the distri- bution of hopefulness, as Hage (2003) has recently argued. This is not a Bush-like hope- fulness borne out of a tragedy committed by those who shower hope, nor a hopefulness that works as an opiate for sustained misery, but one that works through an ethic of care that delivers on the ground. This is not a ‘love-thy-neighbour’ ethic of care, but one based on the rights of recognition. Once the city is returned as a vibrant democracy, those in power might be nudged to respond without recourse to a politics of containment and repression (see Boudreau, 2003, on differ- ences between Los Angeles and Montreal based on differences in the balance between

THE GOOD CITY 1021

state and civic power). Once the good city thus defined begins to deliver, the politics of representation—now so thoroughly aligned to corporate power—might be forced to give ground to another kind of politics based on participation on the ground, and by those discounted as political subjects.

References

AMIN, A. (2002) Ethnicity and the multicultural city, Environment and Planning A, 34(6), pp. 959–980.

AMIN, A. and THRIFT, N. (2002) Cities: Re- imagining the Urban. Cambridge: Polity.

AMIN, A. and THRIFT, N. (2005a) What’s left? Just the future, Antipode, 37(2), pp. 220–238.

AMIN, A. and THRIFT, N. (2005b) Citizens of the world: seeing the city as a site of international influence, Harvard International Review, 27(3), pp. 14–17.

ANDERSON, B. (2006) ‘Transcending without transcendence’: utopianism and an ethos of hope, Antipode (forthcoming).

BAUBÖCK, R. (2003) Reinventing urban citizen- ship, Citizenship Studies, 7(2), pp. 139–160.

BAUMAN, Z. (2003) Utopia with no topos, History of the Human Sciences, 16(1), pp. 11–24.

BODY-GENDROT, S. (2000) The Social Control of Cities? Oxford: Blackwell.

BOUDREAU, J.-A. (2003) Questioning the use of ‘local democracy’ as a discursive strategy for political mobilization in Los Angeles, Montreal and Toronto, International Journal of Urban and Regional Research, 27(4), pp. 793–810.

BOUDREAU, J.-A. and KEIL, R. (2001) Seceding from responsibility? Secession movements in Los Angeles, Urban Studies, 38(10), pp. 1701–1731.

BOWKER, G. and LEIGH-STAR, S. (1999) Sorting Things Out. Cambridge, MA: MIT Press.

COLEMAN, R. (2004) Reclaiming the Streets. Uffculme: Willam Publishing.

CONNOLLY, W. (2005) Pluralism. Durham, NC: Duke University Press.

DEMOS (2005) People Make Places. London: Demos.

DERRIDA, J. (2001) On Cosmopolitanism and For- giveness. London: Routledge.

DEUTSCHE, R. (1996) Evictions: Art and Spatial Politics. Cambridge, MA: MIT Press.

FEATHERSTONE, D. (2005) Towards a relational construction of militant particularisms: or why the geographies of past struggles matter for resistance to neoliberal globalisation, Antipode, 37(2), pp. 250–271.

FRASER, N. (2005) Reframing global justice, New Left Review, NS, 36, pp. 69–88.

FRIEDMANN, J. (2000) The good city: in defense of utopian thinking, International Journal of Urban and Regional Research, 24(2), pp. 460– 472.

GANDY, M. (2002) Concrete and Clay. Cambridge, MA: MIT Press.

GANDY, M. (2005) Learning from Lagos, New Left Review, 33(May/June), pp. 37–53.

GRAHAM, S. (Ed.) (2004) Cities, War and Terror- ism. Oxford: Blackwell.

GRAHAM, S. (2005) Software-sorted geographies, Progress in Human Geography, 29(5), pp. 1–19.

GRAHAM, S. and THRIFT, N. (2006) Out of order: understanding repair and maintenance, Theory Culture and Society (forthcoming).

HAGE, G. (2003) Against Paranoid Nationalism. Annandale, NSW: Pluto Press.

HARVEY, D. (2000) Spaces of Hope. Edinburgh: Edinburgh University Press.

HOLLENBACH, D. (2002) The Common Good and Christian Ethics. Cambridge: Cambridge University Press.

HOLSTON, J. and APPADURAI, A. (1999) Introduc- tion: cities and citizenship, in: J. HOLSTON (Ed.) Cities and Citizenship, pp. 1–18. Durham, NC: Duke University Press.

ISIN, E. (2002) Being Political. Minneapolis, MN: University of Minnesota Press.

KEITH, M. (2005) After the Cosmopolitan. London: Routledge.

KENNEDY, W. G. (Ed.) (2004) Remaking Birmingham: The Visual Culture of Urban Regeneration. London: Spon.

KUNDNANI, A. (2001) From Oldham to Bradford: the violence of the violated, Race and Class, 43(2), pp. 105–131.

LATOUR, B. (2005) From realpolitik to dingpolitik or how to make things public, in: B. LATOUR and P. WIEBEL (Eds) Making Things Public, pp. 14–42. Cambridge, MA: MIT Press.

LEFEBVRE, H. (1996) Writings on Cities, trans. and ed. by E. Kofman and E. Lebas. Oxford: Blackwell.

LOW, S. (2003) Behind the Gates: Life, Security, and the Pursuit of Happiness in Fortress America. London: Routledge.

MACLEOD, G. (2002) From urban entrepreneurial- ism to a revanchist city? On the spatial injustices of Glasgow’s renaissance, Antipode, 34(3), pp. 602–624.

MILES, S. and MILES, M. (2004) Consuming Cities. Basingstoke: Palgrave Macmillan.

MITCHELL, D. (2003) The Right to the City: Social Justice and the Fight for Public Space. New York: Guilford Press.

MOUFFE, C. (2000) The Democratic Paradox. London: Verso.

1022 ASH AMIN

PARKER, S. (2004) Urban Theory and the Urban Experience. London: Routledge.

PINDER, D. (2002) In defence of utopian urbanism: imagining cities after the ‘end of Utopia’, Geografiska Annaler, 84B(3/4), pp. 229–241.

PINDER, D. (2005) Visions of the City. Edinburgh: Edinburgh University Press.

PRED, A. (2000) Even in Sweden. Berkeley, CA: University of California Press.

ROGERS, R. and POWERS, A. (2000) Cities for a Small Country. London: Faber and Faber.

SANDERCOCK, L. (2003) Cosmopolis II: Mongrel Cities in the 21st Century. London: Continuum.

SASSEN, S. (Ed.) (2002) Global Networks, Linked Cities. London: Routledge.

SASSEN, S. (2003) The repositioning of citizenship: emergent subjects and spaces for politics,

Berkeley Journal of Sociology: A Critical Review, 46, pp. 4–26.

SENNETT, R. (1998) The Corrosion of Character. New York: Norton.

SHELDRAKE, P. (2001) Spaces for the Sacred. London: SCM Press.

SMITH, N. (1996) The New Urban Frontier: Gentrification and the Revanchist City. London: Routledge.

THRIFT, N. (2005) But malice aforethought: cities and the natural history of hatred, Transactions of the Institute of British Geographers NS, 30, pp. 133–150.

WACQUANT, L. (1999) Urban marginality in the coming millennium, Urban Studies, 36, pp. 1639–1647.

YOUNG, I. M. (2002) Inclusion and Democracy, 2nd edn. Oxford: Oxford University Press.

THE GOOD CITY 1023

Term Paper/Jubail Industrial city/1-s2.0-004313549400148Z-main.pdf

~ ) Pergamon 0043-1354(94)00148-0 War. Res. Vol. 29, No. 6, pp. 1579 1584, 1995

Copyright ~-~ 1995 Elsevier Science Ltd Printed in Great Britain. All rights reserved

0043-1354/95 $9.50 + 0.00

WASTEWATER REUSE IN JUBAIL, SAUDI ARABIA

MOHAMMAD S. AL-A'AMA I and G. F. NAKHLA 2

ISaudi-Aramco, Environmental Engineering Division, Process and Control Systems Department, Dharan 31311

2Department of Civil Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

(First received June 1993; accepted in revised form May 1994)

Abstract--With the industrial development and urban construction in Madinat A1-Jubail Alsinaiya in Saudi Arabia, which has mostly arid regions and due to limited water resources depends on diminishing ground water and costly desalinated seawater, wastewater reuse is pursued using reclaimed municipal and industrial wastewater through treatment plants.

This paper is an actual case study discussing the features of reuse, the processes used and the standards adopted. The effect of reuse upon the local environment is commented upon. This study also emphasizes the cost-competitiveness of wastewater reuse for irrigation in Saudi Arabia. Design data and operational results for the 19 MGD municipal wastewater water treatment plant and the 11 MGD industrial wastewater treatment plant will be discussed. Both plants utilize biological treatment followed by pressure filtration to meet the stringent standards governing the use of effluent in landscape irrigation. The effluent TDS, TSS, BOD 5 and SAR are valued 936, 4.4, 2.7, and 7.4, respectively, for the municipal wastewater treatment plant and 762, 2.1, 2.4 and 10.5, respectively, for the industrial wastewater treatment plant.

Key words--wastewater treatment, wastewater reuse, public health, water quality, irrigation

INTRODUCTION WASTEWATER TREATMENT PLANTS

Mad ina t A1-Jubail Alsinaiya (MJS) is an industrial city located on the A r ab i an Gu l f in the eastern par t of Saudi Arab ia with a lat i tude of 27 ° 2' and longi- tude of 49 ° 24'. The city is directed under the Royal Commiss ion of Jubai l and Y a n b u (RCJY) which is a governmenta l es tabl ishment , and accommodates a large n u m b e r of petrochemical plants. The tempera- ture ranges between 25 and 45°C with an average of 30°C. With an annua l increase in popula t ion of 3%, the current water consumpt ion of 372 LCD (l i ter /capita/day) is expected to increase to 630 LCD in 2010 (Abdul razzak and Khan , 1990), and also being located in an arid region with very limited water resources available th rough diminishing ground water and costly desal inat ion of seawater, the policy of Saudi Arab ia has been drawn up to utilize all the treated wastewater as a water source for i rr igat ion (Fa rooq and AI-Layla, 1987; Arar , 1991). Fur thermore , the fear of pol lut ing the Arab ian Gu l f has led the Regional Organiza t ion for Protect ion of the Mar ine Env i ronmen t based in Kuwait to adopt a policy of not discharging wastewater into the sea (Banks, 1991).

This paper summarizes the t rea tment methods used in MJS industrial and municipal t rea tment plants. The paper also evaluates the status of the wastewater effluent and compares it with s tandards for landscape irrigation, and gives cost figures of the wastewater t reatment .

This paper is directed towards discussing two t rea tment plants operat ing in MJS. The first is a municipal t rea tment plant and the o ther is an indus- trial t rea tment plant.

Design and description of the municipal treatment plant

Design flow rate 72,000 m 3 d - BOD 5 concent ra t ion 210 g m SS concent ra t ion 230 g m-3 Design BOD 5 load 15,120 kg d Design SS load 16,560 k g d %BOD5 removal 9 1 4 7 % % SS removal 96 -99%

A schematic d iagram showing the design t rea tment processes of the municipal t rea tment plant is given in Fig. 1 where the primary, secondary and tert iary t rea tments are i l lustrated (RCJY Municipal Treat- ment Plant Documenta t ion) . Currently, some of the tertiary t rea tment units are skipped as seen in the figure since the effluent quality is satisfactory for use in landscape irrigation as will be discussed later.

Design and description of the industrial treatment plant

A schematic d iagram showing the design industrial wastewater t rea tment t rain is given in Fig. 2 (RCJY Industr ial Trea tment Plant Documenta t ion) . Influent water to the industrial t rea tment plant includes water

1579

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1582 MOHAMMAD S. AL-A'AMA and G. F. NAKHLA

Table I. Existing standards governing the use of renovated water in landscape irrigation

Crops California Israel South Africa Germany Peru Qatar

Landscape, Primary effluent. Secondary efflu- Tertiary effluent, No spray irriga- Untreated pro- Tertiary efflu- orchards, vineyards no spray irriga- ent heavily chlorin- tion in the vicin- vided not less ent, 4 mg/I re-

tion, no use of ated, no spray ity than 20 days sidual chlorine dropped fruit irrigation elapse between

watering and harvest

used in the petrochemical factories and sewage water coming from the residential camps of the factories. Therefore, nutrients addition to the treatment process was skipped. Moreover, the neutralization process and the ozonation process are currently not used since the pH and the C O D values are within accept- able ranges. The current operating treatment process is illustrated in Fig. 2.

The industrial water treatment process followed two stages. The first stage was to assure that any high concentration of toxic materials, such as ammonia, is removed by passing the influent through two successive aerated lagoons each with a volume of 40,000 m 3 and a detention time of 1.5 days. This stage is not necessary when a high concentration of toxic materials does not exist.

The second stage is carried out after the first stage. The treatment characteristics are summarized as follows:

Design flow rate 41,700 m 3 d 1 BOD5 concentration 260 g m 3 SS concentration 215 g m 3 Design BOD load 10,880 kgd J Design SS load 8965 kg d % BOD removal 97% % SS removal 95%

The treatment consists of primary, secondary (bio- logical treatment) and tertiary treatments as shown in Fig. 2.

WASTEWATER COLLECTION AND DISPOSAL

Presently more than 55,000m3/day of munici- pal and industrial wastewater receives primary, sec- ondary and tertiary treatment with post-chlorination (Alsadat, 1991). The treated effluent is pumped i r to the irrigation system of the city for landscape devel- opment. Tertiary treated effluent in excess of irriga- tion demand is pumped to storage lagoons outside the city limits to avoid discharge of the water into the gulf in order to control pollution. The sewerage network used for collection and disposal of the wastewater is laid beneath the roads and sidewalks with a total length that reaches 900 kin.

It is a common practice to treat industrial and municipal wastewaters that have close concentration values in one sewage plant in order to reduce the capital, operational and maintenance costs. This practice was not followed in Jubail in order to account for near future expansion in the industries

that could change the characteristics of the dis- charged wastewater.

QUALITY REQUIREMENTS FOR LANDSCAPE IRRIGATION

Standards and criteria .[or lands'cape irrigation water quality

Different countries have different standards governing the use of sewage effluent for irrigation. This reflects the difficulty in accurately assessing the risk of irrigation using reclaimed wastewater. The existing requirements of the different countries governing the use of renovated water in landscape irrigation is given in Table 1 (Ahmad, 1989; Taylor and Denn, 1987).

From Table 1, the effluent reuse in MJS complies with the existing requirements applicable to the use of renovated water in landscape irrigation since the wastewater in MJS is subjected to secondary and tertiary treatments with chlorination.

The Riyadh Region Water and Sewage Authority and the Ministry of Agriculture and Water in Saudi Arabia established criteria for unrestricted irrigation are given as follows (Ali, 1987; Sogreah, 1983):

(1) BODs: 10mg/l (2) TSS: 10mg/l (3) NO3: 10mg/l (4) Faecal coliforms 7 day average value

2.2 MPN/100 ml. No value above 23 MPN/ 100 ml in a 30 day period.

The Royal Commission for Jubail and Yanbu (RCJY) set the standards for irrigation water quality for MJS as summarized in Table 2. It should be noted from the above, that standards are set to preserve the environment and public health by controlling the chemical and microbiological hazards which are harmful to plants, soil and people.

Water quality

Analyses of the treated effluent from the industrial and the municipal plants are presented in Tables 3

Table 2. Jubail irrigation water quality standards

Maximum Monthly Parameter allowable allowable

TDS (mg;l) 200(I 1750 TSS (mg/I) 15 10 Turbidity (NTU) 5 2 Sodium adsorption ratio (SAR) 20 10 Total coliforms MPN/100ml 23 2.2

Wastewater reuse in Jubail, Saudi Arabia

Table 3. MJS municipal wastewater treatment plant (monthly analysis report from 13/6/91 to 11/7/91)

1583

Parameter

Influent Secondary Tertiary

(F) Max. Min. Avg. Max. Min. Avg. Max. Min. Avg.

Flow (1000 m3/d) D pH D 7.4 Electrical conductivity* (,u mho/cm) 2600 TDS (mg/l) D 1300 TSS (mg/I) D 186 COD (mg/I) D 370 BOD s (mg/I) D 120 Nitrates (mg/I) D 7,5 Nitrites (rag/I) D 0,26 Alkalinity (as CaCO 3 mg/1) R Turbidity (NTU) D TRC (mg/I) D FRC (mg/1) D Chlorides (mg/I) R Sulfides (rag/I) R Sodium (rag/l) R Calcium (mg/l) R Magnesium (mg/l) R SAR R Total coliform (MPN/100 ml) D

27 7.1 7.2

1400 1848 700 924 64 114 27.6 2.8

176 239 45 75 15.2 3.2

1.2 2.9 0.01 0.03

6.7 6.0 6.3 2100 1700 1872 1050 850 936

9.5 9.2 1.2 4.4 43 16 25

5.8 4.4 1.2 2.7 13 7.2 8.6 0.6 0.01 0.12

40 9 4.2 0.7 1.6

4.7 0.55 1.83 4.0 0.0 0.95

342 275 302 0.0 0.0 0.0

288 163 227 77 29 43

10.5 5.7 7.4 <3 <3 <3

(F) = frequency. D = daily. R = random. *Derived from TDS (Montgomery, 1985).

and 4, respectively. The heavy meta ls are absen t f r o m

the industr ia l was tewa te r since the industr ia l p lan ts

ope ra t ing in the region are main ly pe t rochemica l

plants .

The qual i ty o f the was t ewa te r effluent is bet ter t han

the s t a n d a r d s given by the R C J Y , the Riyadh Reg ion

W a t e r and Sewage A u t h o r i t y and the Minis t ry o f

Agr icu l ture and Water .

WATER REUSE

The t reated was tewater , after secondary and

ter t iary t rea tments , can be used for all types o f

restr icted and unres t r ic ted landscape i r r igat ion which

includes residential, f reeway median , greenbel ts and

parks .

Methods of irrigation

Using the t reated water , spr inklers are used for the

i r r igat ion o f grass areas and the dr ip m e t h o d is used

for trees.

ECONOMIC ASPECTS OF REUSE

W a s t e w a t e r t r ea tmen t in M J S is a prof i table

inves tment due to the high cost o f seawater desalina-

t ion in Saudi Arabia . The total cost o f seawater

desal inat ion including capital and opera t ing cost

Table 4. MJS industrial wastewater treatment plant (monthly analysis report from 13/6/91 to 11/7/91)

Parameter

Influent Secondary Tertiary

(F) Max. Min. Avg. Max. Min. Avg. Max. Min. Avg.

Flow (1000 m3/d) D pH D 8.0 Electrical conductivity* (# mho/cm) 1754 TDS (mg/I) D 877 TSS (mg/I) D 262 COD (mg/I) D 735 BOD 5 (mg/I) D 247 Nitrates (mg/l) D 1.6 Nitrites (mg/l) D 0.03 Alkalinity (as CaCO 3 rag/I) R Turbidity (NTU) D TRC (mg/l) D FRC (mg/l) D Chlorides (mg/l) R Sulfides (mg/l) R Sodium (mg/l) R Calcium (mg/I) R Magnesium (rag/l) R SAR R Total coliform (MPN/100 ml) D

25 7.0 7.4

708 1082 354 541 40 91

103 279 58 126 0.6 I.I 0.01 0.01

7.0 6.4 6.7 2100 1000 1524 1050 500 762

15.4 2.8 1.6 2.1 36 16 25

5.4 4.0 1.2 2.4 7.5 4.6 6.6 0.30 0.01 0.09

35 10 1.9 0.9 1.4

3.98 0.83 2.17 2.98 0.07 1.17

158 0.0

252 182 220 25.9 13.6 17.6 9.4 4.8 6.7

14.4 8.7 10.5 <3 <3 <3

(F) = frequency. D = daily. R = random. *Derived from TDS (Montgomery, 1985).

WR 29:6--K

1584 MOHAMMAD S. AL-A'AMA and G. F. NAKHLA

Table 5. Cost figures of wastewater treatment in Madinat AI-Jubail Alsinaiya (SR/m 3)

Parameter Industrial Municipal

Total treatment* 7.6 7.6 Capital cost 5.0 5.0 Running cost 2.6 2.6 Tertiary treatmentt 0.53 0.61 Collectiont 0.34 I. 12 Distributiont 0.24 0.24

*At an annual rate of 7% for a period of 30 years. tOperation and maintenance cost.

ranges between USD 1.5 and USD 4.5 (1 U S D = 3.75 SR) (Farooq and AI-Layla, 1987; Abu Rizaiza and Allam, 1989). The actual cost of seawater desali- nation in the Jubail desalination plant is approx. 10 SR/m 3 (Atarji, 1991).

Cost given in terms of SR/m 3 of wastewater treatment, collection and distribution in MJS is sum- marized in Table 5. The average total cost of the industrial and municipal wastewater treatments is approx. 7.6 SR/m 3 which clearly marks a reduction of 24% in the cost of the irrigation water supply. In Saudi Arabia the irrigation water supply constitutes about 10% of domestic water use (Abdulrazzak and Khan, 1990).

CONCLUSION

It can be said, from the previous discussion and information, that the practice of wastewater reuse for landscape irrigation in Madinat A1-Jubail Alsinaiya in Saudi Arabia is well established and success- ful. Wastewater t reatment has effectively reduced the pollution of the environment, provided a valuable source for water supply for landscape irrigation and

reduced the cost o f the landscape irrigation water supply.

REFERENCES

Abdulrazzak M. J. and Khan A. Z. A. (1990) Domestic water potential in Saudi Arabia. J. envir. Mgmt 14, 167 178.

Abu Rizaiza O. S. and Allam M. N. (1981) Water require- ments versus water availability in Saudi Arabia. J. Wat. Resour. Plann. Mgmt Div., A S C E 115, 64 74.

Ahmad S. (1989) Wastewater reuse in landscape and agri- cultural development in Doha, Qatar. J. Wat. Sci. Tech- nol. 21, 421~426.

Ali I. (1987) Wastewater criteria for irrigation in arid regions. J. lrrigat. Drainage Div., A S C E 113, 173 183.

Alsadat Fadel (1991) Personal communication. APHA (1971) Standard Methods .['or the Examination o f

Water and Wastewater, 13th edition. APHA, AWWA, WPCF, Washington, D.C.

APHA (1980) Standard Methods Jbr the Examination o1" Water and Wastewater, 15th edition. APHA, AWWA, WPCF, Washington, D.C.

Arar A. (1991) Wastewater reuse for irrigation in the near east region. J. Wat. Sei. Teehnol. 23, 2127 2134.

Atarji Abdulaziz N. (1991) Personal communication. Banks P. A. (1991) Wastewater reuse case studies in the

Middle East. J. Wat. Sci. Technol. 23, 2141 2148. Farooq S. and Al-Layla R. I. (1987) Study of water

transportation to Saudi Arabia. J. War. Resour. Plann. Mgmt Div., A S C E 113, 392~,04.

Montgomery J. M. (1985) Water Treatment Principles and Design. Wiley, New York.

Sogreah (1983) Tertiary treatment for Dammam and AI- Khobar treatment plant, pre-design report. Water and Sewage Directorate, Eastern Province, Saudi Arabia.

Taylor M. R. G. and Denn J. M. (1987) Sewage effluent a water resource. J. Inst. Wat. Engr. Scient. 4, 40-50.

The Royal Commission for Jubail and Yanbu (RCJY) at Jubail Industrial Treatment Plant Documentation.

The Royal Commision for Jubail and Yanbu (RCJY) at Jubail Municipal Treatment Plant Documentation.

Term Paper/Jubail Industrial city/1-s2.0-S0197397501000261-main.pdf

Habitat International 26 (2002) 1–20

Urban and industrial development planning as an approach for Saudi Arabia: the case study of Jubail and Yanbu

Ibrahim M. Al-But’hie*, Mohammad A. Eben Saleh

College of Architecture and Planning, King Saud University, P.O. box 57448, Riyadh 11574, Saudi Arabia

Received 20 December 2000; received in revised form 28 December 2000; accepted 20 April 2001

Abstract

During the last thirty years, the Saudi government has widely employed massive oil resources to enhance urban and industrial development. This was crowned by two giant urban and industrial projects in Jubail and Yanbu. The planning efforts attempt to provide the means to control and manage the industrial development and the physical growth of the two communities. In order to achieve a set of planning objectives, the Saudi government employed two independent planning commissions known as the Royal Commission for Jubail and Yanbu (RCJY). These commissions undertook the responsibility to plan, build and manage two large-scale industrial cities. The system of Commissions and Higher Committees was followed and still practised in the planning of airports, seaports, universities, medical cities and residential neighborhoods. The paper attempts to review analytically various planning processes, which was adopted by some known agencies in Saudi Arabia. By examining these processes one would hope to draw key lessons which can be used by professionals as well as students in the field of planning in Saudi Arabia. r 2001 Elsevier Science Ltd. All rights reserved.

Keywords: Urban planning; Industrial development; Saudi Arabia

Introduction

In the last fifty years, urbanization as a phenomenon of rapid physical growth of villages, towns and cities has occurred in almost every quarter of the Middle Eastern countries, including Saudi Arabia (Mostyn & Hourani, 1988; Saqqaf, 1987; Mubarak, 1995; Al-Hathloul, 1996). The urbanization process in Saudi Arabia was further accelerated in the 1970s after the government started to implement a series of five-year development plans. During this period, and at a very rapid speed, old settlements were expanded in size, new towns were built, basic infrastructures

*Corresponding author. Tel.: +966-1-467-7145; fax: +966-1-467-5775.

E-mail address: [email protected] (I.M. Al-But’hie).

0197-3975/01/$ - see front matter r 2001 Elsevier Science Ltd. All rights reserved.

PII: S 0 1 9 7 - 3 9 7 5 ( 0 1 ) 0 0 0 2 6 - 1

were laid down, and many other important large- and small-scale urban projects were developed (Al-Hathloul and Edadan, 1995). However, since the reduction of oil prices in the mid-1980s, and the Gulf War in early 1990s, the development process has been slowed down.

In Saudi Arabia the acceleration of the phenomenon of urbanization during the seventies and early eighties and the deceleration of the urbanization during the nineties were likely due to several factors. Among the most overriding ones are the following:

1. The high level of integration into the global economy, which has further strengthened the links between Saudi Arabia’s national socio-economic and urban policies and those of the international community, especially of the Western nations (Al-Farsy, 1986; Masood, 1984).

2. The existence of a substantial amount of revenue, which resulted from the large increase in oil prices and production after 1973 (Al-Hathloul & Anis-ur-Rahmaan, 1985; Alp, 1988).

3. The government’s decision to quickly achieve maximum socio-economic growth and improvement in the average quality of urban life and living standards for the rapidly increasing local population (Al-Mobarak, 1993; Ministry of Planning, 1970, 1975, 1980, 1985, 1990, 1995).

4. The increasing number of rural people migrating to major cities who are seeking relatively better economic urban conditions that existed in major cities (Daghistani & Lee, 1982).

5. The rapid industrial development, particularly after the initiation of the two industrial cities in Jubail and Yanbu (Benna & Awad, 1995) (Fig. 1).

These factors are possibly the controlling mechanism that may have provoked rapid urban expansion in almost all parts of Saudi Arabia. In addition, the high influx of foreign experts into the country is another factor that may have contributed into shaping the country’s entire current pattern of labor forces and urbanization.

However, very important urban achievements were made during the last few decades in Saudi Arabia. Unfortunately, the rapid expansion of existing cities as well as the development of new towns and cities occurred in a very short time and were dependent on foreign experiences. The local socio-cultural context and the rich urban value of the country’s traditional urban environment have been discounted in the design and planning processes of many modern urban projects. Consequently, the country’s entire traditional urban structure and morphology have changed (Eben Saleh, 1998). This rapid change, however, raised several questions as to the success of the current urban environment in Saudi Arabia.

The early period of urbanization and industrial development in Saudi Arabia characterized with the lack of professionalism and technological knowledge, which were compensated with experiences and advanced technology of the developed countries. Accordingly, imported modern technologies and planning models and principles of the Western World have been introduced to Saudi Arabia (Mubarak, 1995). Such modern principles were applied indiscriminately with no appreciation to the rich historical legacy of the country’s traditional urban pattern that accumulated over centuries. This has raised a need for a serious investigation and further research as to what implications the further use of modern principles may cause in Saudi Arabia. It is very important to mention at this point, that the direct application of the Western advanced technology, urban and industrial solutions, as well as, design concepts and principles without full regard to the local traditions, socio-cultural factors and physical realities will lead to serious urban implications.

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–202

The purpose

The main purpose of this paper is twofold. First, it provides an insight into the current Saudi pattern of urban and industrial development paradigms. Second, it points out practical ways for using urban and industrial development as an invaluable planning approach for directing Saudi contemporary urban planning towards a path that leads to future urban success and industrial sustainability. In addition, the paper suggests that the improvement of the country’s current industrial planning policies and processes and the valuable experiences of the two industrial projects of Jubail and Yanbu can be considered as models for future industrial planning in Saudi Arabia.

The changing nature of planning

It is true that the early 1970s witnessed an important juncture in the nature of planning in Saudi Arabia. A series of five-year development plans has been initiated with the principal aim to

Fig. 1. Map of Saudi Arabia showing the twin cities, Jubail and Yanbu.

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–20 3

transform rural areas in Saudi Arabia to a more urban and industrial societies. The purpose of these plans is mainly to set physical infrastructure targets, to develop human resources, and to provide an overall-spending framework. The supervision of these development plans, however, was and still is the responsibility of both the Ministry of Planning and the Ministry of Municipal and Rural Affairs. The Ministry of Planning supervises the country’s sectoral growth, whereas the Ministry of Municipal and Rural Affairs deals with the geographic spatial aspects of the country’s urban growth and provides municipal urban services to the country’s various regional and local municipalities (Mashabi, 1995).

Since 1970, the government has completely implemented six of the Five-Year Development Plans and is at the first year of implementing the Seventh Five-Year Plan. The Sixth Five-Year Development Plan resumed on December 31, 1995. This plan was prepared under different circumstances due to the Gulf war and the sharp drop in oil prices. Finally, the most recent plan (the Seventh Five-Year Plan) was approved by the Council of Ministers on August 28, 2000 and became effective on August 29, 2000. A large proportion of the plans’ capital, particularly those of the first two plans, were applied to urbanization policies and hurried settlements’ creation and physical expansion (Daghistani & Lee, 1982; Mostyn & Hourani, 1988).

The Five-Year Development Plan as a short-term strategy

In the case of Saudi Arabia, the short-term planning of any type (namely urban, industrial, agricultural, economic, or the geographic scale) can possibly work by increasing the general awareness of the country’s planning organizations. Fig. 2 illustrates the hierarchy of physical planning and the prominent government agencies: the Ministry of Municipal and Rural Affairs and the Ministry of Agriculture and Water. Their planning efforts need the co-ordination with other agencies like the Ministry of Planning, the Ministry of Transportation and other higher committees and commissions. This means that the Saudi planning organizations should function with an adequate level of autonomy that enables them to work together in a harmonious manner. Thus, the integration of organizations should reflect the concepts of diversity and unity. Unity also means an increase in the co-ordination level between the organizations, particularly during the decision-making process. Moreover, It should reflect the idea of higher committee or commission of multi-planning agencies.

The multi-planning agency model is a model that is widely applicable in the developmental process in Saudi Arabia. This dynamic model is a one possible way to show how short-term planning should be for Saudi Arabia.

Moreover, such agencies may be involved in the Saudi planning process each according to their areas of interest. Therefore, it is crucially important that each agency is wary of its own professional capabilities and must ensure that any allocated responsibilities or tasks do fit compatibly with its area of interest. The co-ordination stage is important to direct all planning actions and programs of all the Saudi planning agencies towards a common satisfactory goal and solution that are in the best interest of the agencies and their client groups (the public).

But to insure effectiveness, a body that makes decisions of a strategic importance should continuously monitor co-ordination among the various agencies. The Saudi Planning Ministry, which is the country’s current acting body responsible for Saudi Arabia’s overall planning affairs,

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–204

can fulfill such a requirement and act as the country’s strategic planning agency that censors and monitors co-ordination among the various planning agencies. On the one hand, its role may extend to set an overall framework that these agencies should follow without jeopardizing their autonomy. On the other hand, the Ministry provides the agencies with some autonomy and

Fig. 2. Schematic chart showing the hierarchy of planning in Saudi Arabia.

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–20 5

encourages them to participate in the formulation and revision of the overall framework and its guidelines. Hence, privileges are given to the agencies allowing them to suggest modifications and adjustments to the framework’s outline; in case the outline cannot be implemented or if changing conditions warrant an adjustment.

All the country’s implemented development plans were suggested by governmental bodies like ministries, higher committees or commissions and then discussed in the Council of Ministers. Usually, the Council of Ministers refer to the King for final approval of the plans. The plans are submitted to the Consultative Councils for study and final check before approvals (Fig. 2). This process is a direct product of the country’s contemporary centralized planning system. It is largely based on short-term urban planning policies, programs, and approaches which advocate growth that only implies quantitative measures or an increase in the physical scale and number of similar urban projects rather than qualitative ones (Abdel Rahman, Al-Muraikhi, & Al-Khedheiri, 1995).

In addition to the centralized and short-term planning system and processes, the phenomenon of physical growth and the geographic spread of urbanization and modernization happened at speeds and rates beyond anything imaginable. This acceleration occurred most likely as a response to the government’s decision to invest the huge amount of oil revenues gained in the early 1970s in initiating urbanization and industrialization policies and programs designed to achieve maximum economic, social, and physical growth in a very short time.

In modern planning as the paper conceives it, planning approaches are quite likely perceived as a consequence of various integrated factors. Planners should not view a particular approach as a holistic approach to planning, but as a mix between various approaches and a blend of their goals and objectives. By implementing such an approach, one would hope that the Saudi’s contemporary planning system will improve, which will possibly help the country to overcome many of its future development and urban challenges.

The urban industrial development paradigm

The urban industrial development paradigm as a radical and decentralized approach encourages the initiation and continuity of a solidly planned and dynamic process of long-term progressive achievement that is socio-culturally relevant and ecologically and economically sustainable. The process is also a complex one advocating economic use of all resources in order to create successively productive capacity and increased self-sufficiency and reliance in the future. Moreover, the paradigm can be seen as a process of justice in which collective and individual rights are secured. This means that the approach is a process based largely on grassroots participation and decentralization as a means for making decisions in order to generate, orient, and free human potential so as to engage practical and constructive work. Hence, it enhances the co-operative practices and provides a framework for government, professionals, and individuals to learn how to work together in a co-operative and systematic manner in order to collectively make right decisions and choices affecting their communities’ sustainability. Additionally, the urban industrial development paradigm can also be defined as an approach that carries with it desires for greater human dignity, equality and security.

Finally, the urban industrial development paradigm can be conceived as a sophisticated urban planning process of studying, analysing, understanding and implementing valuable and unique

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–206

planning principles based on the integration between local cultural values and available resources to respond to modern needs and lifestyles. It is perhaps noticeable that from the above-developed definition(s) of the paradigm several features can possibly be extracted. Among the most salient are the following features:

1. The urban industrial development paradigm is an interactive and integrated process happening within a complex matrix of constantly interacting relations among different systems (e.g., socio- cultural, ecological, economic, urban, environmental etc.).

2. The paradigm is not simply a fixed process but rather a dynamic and fairly systematic process of change consistent with past, present, and future needs and cultural lifestyles. It tends to improve traditional urban experiences and recycle them into contemporary and future urban practices. This will help in creating an authentic present and future that both reestablish a sense of attachment, faithfulness, and continuity with the past.

3. The paradigm’s emphasis is on balanced urbanism and justice, equality, and security; its emphasis is on systems’ change, improvement, and self-reliance; and its emphasis is on decentralization and grassroots participation and on the wise maintenance of ecosystems.

To appreciate the usefulness of the paradigm of urban industrial development to Saudi Arabia’s contemporary planning, it is necessary to set up the stage that would help in comprehending the paradigm and delineating the course in which it can be possibly practised in the context of urban and industrial planning. A comprehensive implementation process of the urban industrial development can help clarify the paradigm broad meaning, and strengthen one’s intellectual capacity to visualize the paradigm within several contexts, including that of urban industrial planning. The identification of the paradigm features and prerequisites improves one’s theoretical understanding about the unique nature of the paradigm. In addition, the identification of the features and the prerequisites may also be beneficial in providing the key ingredients necessary for knowing how to employ the paradigm in order to pursue a truly effective course of urban and industrial development. Collectively, the paradigm features, and prerequisites can also serve as a useful planning tool for measuring the previously discussed phenomenon of rapid urbanization and modernization in Saudi Arabia, and for evaluating the effectiveness of future modern planning.

Features of the urban industrial development paradigm

The features of the suggested urban industrial development paradigm are likely the solid ground on which the planning rests, and the power which makes its practice in the field of planning to be of a great merit for achieving successful and effective future urban results.

After uncovering some of the paradigm’s potentially most salient features, however, it seems that a balanced urban industrial development approach is a goal with a moving target. But, even approaching a balanced urban industrial development approach is perhaps not easy or straightforward. This may likely require a fairly sophisticated planning system that is largely supported by the national government, the regional and local governmental and non- governmental agencies, and the public at all levels. The approachability of urban industrial development may also require a full commitment for fulfilling some basic prerequisites. Therefore,

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–20 7

the approachability of a balanced urban industrial development cannot be practically secured without the presence of a flexible and decentralized system that views all individuals and non- governmental organizations as active staff members fulfilling functions and responsibilities essential for achieving developmental planning goals and objectives. Thus, the planning system gives the individuals and the organizations the right to participate effectively, creatively, and constructively in the development planning and decision-making processes, the formulation of policies, and the realization of the goals and objectives of these policies.

Apparently, therefore, the existence of such a planning system is ultimately crucial for four reasons. First, the existence of such a system can help in diminishing the destructive capacity of centralized decision-making, and by distributing political power that may affect the implementa- tion. Second, the system’s presence can help in setting up and increasing the levels of dialogue, communication, co-operation, and understanding between technocrats and all other constitu- encies of a society, and thereby widen the base of decision-making. Third, the system can possibly help in largely raising individuals’ and non-governmental organizations’ confidence and knowledge about urban industrial development goals and objectives. It can also serve as a source of information and collective wisdom in providing policy-makers and planners with additional invaluable data that significantly bear on the success of urban industrial developmental processes and the design and implementation of urban industrial projects. Fourth, the system could be useful in identifying the local people’s developmental and urban needs and wishes. This could, in turn, serve as the critical means for specifying local planning agencies’ missions, delineating the main course of future industrial developmental and urbanization programs, and measuring the quality and quantity of such programs and projects.

Bridging the gap between urban and industrial development

The rapidity of the phenomenon of physical expansion growth and urbanization seems to have also had other serious negative implications of a socio-cultural, ecological, and economic nature. Socio-culturally, for example, expansion and urbanization accelerated during a time when Saudi Arabia was capital rich but severely lacking in institutional capacity; skilled local personnel; and a large sophisticated body of administrative, technological, architectural, urban design, and planning knowledge and practices. Such overriding factors were perhaps the main reason that led the government to seek the advanced experience and technology of the western industrialized nations. The aim was to provide solutions to reduce the country’s urban pressures, and to cope with the demands and the new urban ideals of the twentyfirst century. Most likely, this decision was reinforced by the elite’s general belief that urbanization and development models used in Western nations were the most acceptable and ideal models, and could be used successfully to solve Saudi Arabia’s urban problems, and to modernize the Saudi society.

The phenomenon of physical growth and the geographic spread of urbanization and modernization have been closely associated with the importation of complete Western models. Such models included architectural designs and styles, urban design models and principles, and urban planning policies, zoning regulations, and programs. It is vitally important to conceive that there is a need for a coherent impersonation between urban development and industrial development in urban planning practices. In addition, it is equally important to understand the

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–208

significant role of the grassroots and their participation in the decision-making and planning processes. The importance of the grassroots participation to people’s lives is apparently noticeable from Fathy’s statement: ‘‘to be alive is to make decisions’’ (Fathy, 1973, p. 22). While the importance of such participation to the successfulness of urban projects is evident from Simon’s statement: ‘‘development projects stand little chance of success unless the local population not only derive tangible and sustained benefits, but are also actively involved in planning and control throughout’’ (Simon, 1989, p. 46). Therefore, it is perhaps obvious that the existence of a flexibleFdecentralizedFpolitical system that is based on a participatory approach is the key prerequisite to success and the light guiding decision-makers to virtually approach sustainable urban industrial development.

Additional requirements may include the formulation of a modern urban planning system that would take care of operating, sustaining, and improving traditional urban systems, and use such systems as a basis for guiding new urban systems and patterns of urbanization. It may include the development of an exceptional educational system that advances scientific research and technological activities. It may also include the development of a reliable database that is capable of formulating long-term industrial developmental planning approaches and management policies and strategies. As such, the fulfilment of such critical prerequisites is extremely imperative for practically approaching a course of long-term sustainability and progressive urban industrial development. Thus, all the mentioned prerequisites should be viewed as broad planning goals that should guide and underlie any country’s present and future developmental and urban planning processes and actions.

Understanding the paradigm and accepting its meaning and features can help enlighten decision-makers’ and local planners’ with regard to essential planning approaches needed for achieving a balanced future urban and industrial development. Furthermore, understanding the paradigm and accepting its meaning and features may perhaps help increase awareness of local organizations and citizens. Consequently, they can thoroughly recognize and apprehend the fundamental role their participation can play in the country’s urban planning and decision making processes in the improvement and success of the country’s urban planning system, and in the design and implementation of the country’s current and future urban industrial projects. Thus, increasing such consciousness may encourage the participation of the organizations and the citizens together in the preparation processes of the country’s planning process, and to express their aspirations and views about the urban quality of the built environment in which they will reside.

The paradigm of urban industrial development, if well conceived and practised, can be of a great value for establishing an efficient mechanism for co-ordination at the level of policies’ and programs’ formulation among the country’s various ministries and agencies involved in urban planning and industrial development affairs. Setting the base for developing such a mechanism may also contribute significantly in increasing co-ordination between the ministries and agencies involved in the design of national, regional, and local urban planning policies.

Most importantly, the paradigm of urban industrial development and its application may also be useful to the Saudi Arabian contemporary urban planning system because, as already mentioned, it encourages and reinforces the idea of grassroots participation. This kind of participation is extremely crucial to the process of increasing the local people’s confidence in their country’s urban planning and industrial affairs. In other words, grassroots participation is important to strengthen and soften the relationship between the government and the public.

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–20 9

Hence, this in return will increase the public commitment to, and involvement in, the planning and decision-making processes that decide the pattern of their country’s urban structure and the character of industrialization. This kind of participation is also significant to the process of envisioning how urbanization and modernization in Saudi Arabia can progress and thrive in response to the needs, wishes, and urban life-style and values of the majority rather than only to those ones of the minority. Lastly, grassroots participation is crucial and must be encouraged in Saudi Arabian contemporary urban planning system and urban industrial activities simply because it is a good attitude, in and of itself, and because grassroots participation and good urban planning are often supportive and go hand in hand.

The paradigm’s crucial aim is to decentralize the Saudi Arabian contemporary urban planning system and to implant the spirit of constructive work and co-operation among all parts of the Saudi society by introducing a participatory approach to the country’s urban planning system. In addition, the paradigm of urban industrial development and its practice are useful to the system in several other important planning aspects. Initially, the paradigm is defined as a radical approach of development advocating culturally and ecologically sensible changes and long-term qualitative improvement of various systems (e.g., economic, socio-cultural, urban, ecological, political, administrative, technological, educational, informational, etc.). However, it is quite important not to conceive the paradigm of urban industrial development as a procedure of growth. Instead, the paradigm is a fairly dynamic, systematic, interactive, and integrated approach of change and progressive betterment occurring within a sophisticated fabric of constantly interacting relations between different systems. It is consistent with the past, the present, and the future needs, socio- cultural values and life-styles, and ecological conditions. It is perhaps noticeable that the paradigm of urban industrial development largely advocates, besides a participatory approach, the use of a radical approach in urban planning. Such an approach is based entirely on human development, on cultural and ecological ethics, on systems’ change and flexibility, and on long- term urban planning development policies, strategies, and solutions to urban problems as one of its most critical objectives.

Appropriate planning approach for Saudi Arabia

In the mid-1970s, Saudi Arabia embarked on a bold approach designed to create a strong diversified national industrial economy to upgrade the country’s natural resources, and reduce dependency on oil revenue. The benefits derived from this new approach were to be shared by the Saudi Arabian people through an enhanced standard of living. This approach is currently being realized in the construction of two new industrial cities on opposite sides of Saudi Arabia (Fig. 1). Madinat Al-Jubail Al-Sinaiyah (MJAS), on the Arabian Gulf (Fig. 3), the heart of the petroleum deposits and close to deep Gulf Waters, and Madinat Yanbu Al-Sinaiyah (MYAS) (Fig. 4), on the shores of the Red Sea (Daghistani & Lee, 1982). The creation of these brand-new manufacturing and urban industrial centers vigorously carried out by the Royal Commission for Al-Jubail and Yanbu (RCJY) plays a major role in the Saudi Arabia’s economy. The RCJY is in charge of several tasks: the promotion of private-sector investment, community and human resources development, and environmental protection in Jubail and Yanbu. It is also responsible for providing all the social and physical infrastructure needed for the construction and operation of

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–2010

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the huge urban industrial developments in these two cities (Fig. 5). Therefore, these two urban industrial cities could be in fact considered as pilot projects in terms of size, type, infrastructure, and the sophistication of their urban planning concepts and environmental quality.

The Industrial Areas are the main objective behind the construction of Jubail and Yanbu urban industrial cities. The Industrial Area in Jubail, for example, envisages the setting up of 19 primary industries together with 136 secondary industries and 100 ancillary industry, to operate under the capital concentration method. These industries created more than 100,000 jobs by the beginning of the millennium. The industrial city utilizes an estimated 4 billion US dollars’ worth of natural gas, which until recently was considered as an expendable product. It also produces steel, aluminum, plastics and fertilizers for local and international markets.

Work in these two cornerstones of Saudi Arabia’s industrial economy progressed according to plan. Work took place so that the development of the infrastructure started at the same time as work was started on the residential areas, the building of industrial installations, and the planting of gardens. This method achieved positive results, reflected in the fact that the master plans for both Yanbu and Jubail were drawn up in a relatively short time. Both state organizations and the private sector made concerted efforts to complete their parts of the project so that it rapidly took shape.

Planning for the building of the two industrial cities of Jubail and Yanbu was based on achieving integration between the two cities, despite the long distance separating them (1200 km). Accordingly, Yanbu’s share of the primary industries included a crude oil export terminal, oil refineries for local consumption and export, a natural gas separation complex and a petrochemical complex. All these projects have been completed, and started operating by the end of the third

Fig. 5. Functional relationship diagram of the Royal Commission of Jubail and Yanbu.

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development plan. Benna and Al-Deufi (1999) argue that the proactive and reactive policies (as well as the policy instruments of this strategy) try to keep balance between the needs of the urban industrial development and the enhancement of the environment. These projects are believed to be leading projects in introducing a new form of modern economic and urban development in Saudi Arabia (Figs. 6–8). The RCJY projects employed long term strategies for economic and urban development in the form of guidelines to preserve religious, social, cultural and environmental imperatives, which are believed to be sustainable. The RCJY projects were conceived as self- contained entities.

The RCJY also issued instructions for the protection of the environment and the areas of archaeological formations. The environmental regulations and standards were in action since 1988, but from September 2000 every factory must comply with them, otherwise fines, penalties or shut down may take place. Engineering Manual: Environmental Guidelines, 1988; (Royal Commission Environmental Regulation, 1999). The reduction of pollution (air, water, sound, soil) to the minimum is possible when the standards and regulations are applied to a certain level.

Fig. 6. One of the sub-neighborhoods in Jubail industrial cities.

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In Jubail and Yanbu industrial cities the protection of the beautiful sea mangroves, used as a refuge by marine life, was particularly an important consideration. Special efforts were made to protect as large an area of these trees as possible and the offshore coral reefs. Special precautions were taken to purify factory water and sewage to comply with environmental protection specifications. Thus, in recognition of their landscape and environmental programs, these two cities received several international awards from the United Nations and other organizations for the protection and enhancement of their environment and ecosystem.

Madinat Al-Jubail Al-Sinaiyah (MJAS)

Jubail is a part of the old Jubail vicinity. It is located to the north of the old seaport. This location establishes the basic butterfly form of the community. In addition to its location, certain general organizing principles and several major structural elements shape the community plan (Fig. 3).

Fig. 7. One of the sub-neighborhoods in Yanbu industrial city.

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The community plan adopted a system of hierarchy of districts, sectors and neighborhoods. It is divided into eight districts, which accommodate between 30,000 and 38,000 people and have an area of approximately 1000 ha each. Each district has a center with a variety of districts serving facilities. It is divided into four to five sectors of between 5000 to 8000 people. Each sector is served by a center with a mosque and a clinic and, in many cases, a sector level commercial center. Each sector is divided into two to four neighborhoods of about 2500 people. Each neighborhood contains a full range of housing types and local facilities. The focal point of the neighborhood is a Friday or a daily mosque, a kindergarten and, in most cases, a neighborhood commercial center. A significant factor of shaping the community is the hierarchy of the road system, which influences the community form.

The open space and recreation system provides the second major structural element of the plan. This system contains landscape corridors, coastal corridors; bayshore landscaped open

Fig. 8. Saudi petrochemical company (SADAF) complex in Jubail.

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space, and parks and recreation facilities. The open space and recreational systems define the limits of districts by providing landscaped open spaces along the coastal edge and between districts and provide a location for recreational and educational facilities that serve more than one district.

Madinat Yanbu Al-Sinaiyah (MYAS)

The MYAS or Yanbu Industrial City is located 350 km north of Jeddah City on the Red Sea and 19 km south of the old port city of Yanbu Al-Bahr. The City has been functioning for centuries as an entry point for pilgrims on route to the Holy Cities Makkah and Al-Madinah. Historically unpopulated, MYAS has been developed on a desert plain with an exception of few agricultural dwellers. Virtually, it is without any relief from the Hejaz Mountains on the East to the Red Sea coastline. Thus, it enjoys a location resembling a resort.

The projected design capacity of the Community may exceed some 120,000 people, although not more than 100,000 are expected by the year 2010. Its area is subdivided into fourteen districts, all of which are self-contained and provide full facilities and services to the residents. Current population in the completed residential areas is approaching 50,000, and the city accommodates over fifty industrial enterprises. The basic planning and development concept for the community’s land use provides for a concentration of higher density residential uses, such as apartments and townhouses, around the City Center with lower density uses, primarily villas, on the outer periphery (Fig. 4).

The overall community has been developed in a sequential phases in order to accommodate the growth of population. The residential quarters are categorized into three basic types which are arranged in a generally concentric pattern around Fahd Quarter which itself contains high-density residential development. The city core has five residential quarters, which are characterized by higher densities. The coastal quarters have access to the waterfront. Two quarters have higher densities. Quarters with lower density and prime locations are inevitably locations for high- income housing development. The peripheral quarters are three, the furthest from Fahd quarter and the industry zone are more similar to traditional suburbs with lower density, higher car ownership and less reliance on public transit.

A descending hierarchy of commercial centers on three levels was established with the fundamental objectives of locating as many households as possible close to these centers. This is similar to the commercial center strategy at Jubail.

The City Center, located in Fahd Quarter, symbolizes the unity and identity of the community. It is the center which is the primary focus of MYAS. It is the location of the communities most importantly includes major services, mainly religious, civic cultural and commercial facilities. Realization has just begun in the Central Area with the completion of its unique park promenade and circular bay. The City Center is oriented to the Red Sea coast. Building masses will diminish as the sea is approached providing space for landscaped areas, parks and recreation. There will be a crescent shaped marina for recreational use. The sea, the bay, and the marina are major attractions in the city. The center combines major recreational and leisure facilities as well as commercial and retail services, which can be considered as important qualities to encourage continuous and intense activities.

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Concluding remarks

There is no best planning approach, nor there is a single specific way of applying one or even several approaches in any situation or country. However, it is perhaps possible that one planning approach can outline a framework under which a particular planning approach can successfully function.

The Planning system in Saudi Arabia is viewed as a process to achieve main goals to comply with socio-economic and physical growth of communities. This process follows established but unique, paradigms when judged by common conventional planning standards. The Planning system adopted development paradigms, which raises two fundamental issues with respect to urban and industrial development, these are:

1. Urbanization differs from modernization as a thought for development which underlies socio- economic, cultural, ecological, and social meanings.

2. The changing nature of planning for industrial development underlies long term goals, which view both urbanization meanings as part of the development paradigm.

The geographic spread of Saudi Arabia demanded that urbanization have to be made within a short time frame, so most of the spectacular physical growth and urbanization projects in Saudi Arabia have not been screened for their socio-cultural and environmental impact. They have been implemented through a fast process of employment of a massive scale of foreign technologies, and the direct imitation of different socio-cultural urban solutions. As a result of such a process, the local socio-cultural balance of the country’s settlements has been weakened by an imported urban value system that is based on zoning regulations. Being conceived as such, this new value system and its rigid practice seem to have had a pivotal impact on the way residential areas are planned today in Saudi modern settlements.

In spite of the failure of using Western planning models, it must be stated that, industrial development adopted Western technology and urban industrial solutions are not entirely bad. On the contrary, the technology is astonishing and most of the urban design and industrial planning models and approaches as well as the zoning regulations are of a very good quality and effective when applied in the west. But, what makes them seem inappropriate when applied, for example, in Saudi Arabia is the likely failure to recognize that they are of significantly different quality from the ones which have been traditionally ascribed to in the country. They are different in the sense that they have evolved in a completely different socio-cultural and physical environment. They are also different because they are part of a whole legal system and tradition. This legal system is based on a certain notion of social order that is unique to the context in which it has been developed. Therefore, using Western planning models directly and indiscriminately without careful adjustment to fit compatibly with local urban traditions and local socio-cultural and physical conditions could lead to serious urban problems. This may also lead to create an extremely puzzling urban environment that is difficult to perceive. The current urbanization pattern in Saudi Arabia seems to suffer from this issue.

Jubail and Yanbu industrial cities are two exceptions, however. They are not only industry and infrastructure, but also living communities designed for local citizens to lead full and satisfying lives. The local tradition and environment in these two cities have not been sacrificed to foreign modern technology. Physical infrastructure facilities and services are modern, yet the traditional

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way of life still permeate these two communities and contribute greatly to their residents’ quality of life. Their environments and ecosystems are also protected through tight policies and programs implemented by the Royal Commission since the beginning of their development. Hence today, it is true that the Jubail and Yanbu urban pattern is modern and accommodates good facilities and high standards services and infrastructures. It also reflects the demand of socio-cultural and physical orders which makes it fundamentally compatible to indigenous socio-cultural traditions and environmental conditions.

The two industrial cities, as a result of planning effort, provides an arena for actors in planning and design (clients, architects, urban designers and planners) whom are seeking genuine planning and urban ideas for their endeavors. The professionals (economists, planners, urban designers, industrialists etc.) find them a means to develop later genuine schemes and relationships by trying to use principles that enhance the preservation of a healthy environment when putting industry and living in the same scheme. These principles, when used in Jubail and Yanbu as a source for the creation of distinctive urban concepts, flourished as a result of three decades of urbanization.

The implementation and evaluation of innovative planning ideas in Jubail and Yanbu projects that Saudi Arabia went through and their consequences are grounds for later dire decisions to deal with the dynamic cultural, economical, political and ritualistic influences and enhances search of this type. The implication of urban and industrial development approach that creates a sustainable economic base of distinctive urban and architectural identity is a paramount objective, whereby the planning and urban concepts of the RCJY’s two projects created precedents for other planning and urban industrial development of Saudi villages, towns and cities. They also proved that urban industrial development and environmental protection could coexist through controlled programs and policies. The urban development process as an amalgamation of history, culture and economic interests and its symbolic importance seems to be a perfect place for the emergence of different forms of engagement between tradition and modernity which are seen in the RCJY projects.

Finally, the RCJY projects are reflecting real participation between the public and private sectors in terms of planning and development. Thus, they are thriving projects offering their residents all the means and services to lead an enriching, comfortable, and secure life.

References

Abdel Rahman, M., Al-Muraikhi, F., & Al-Khedheiri, A. (1995). A national spatial strategy for Saudi Arabia. In S. Al- Hathloul, & N. Edadan (Eds.), Urban development of Saudi Arabia: challenges and opportunities (pp. 331–356). Riyadh: Dar Al Sahan.

Al-Farsy, F. (1986). Saudi Arabia: A case study in development. London: Kegan Paul International Limited. Al-Hathloul, S. A. (1996). The Arab-Muslim city-tradition, continuity and change in the physical environment. Riyadh:

Dar Al-Sahan.

Al-Hathloul, S. A., & Anis-ur-Rahmaan (1985). Evolution of urban and regional planning in Saudi Arabia. Ekistics, 1– 17.

Al-Hathloul, S., & Edadan, N. (1995). Introduction: An overview. In S. Al-Hathloul, & N. Edadan (Eds.), Urban

development of Saudi Arabia: Challenges and opportunities (pp. 1–15). Riyadh: Dar Al Sahan. Al-Mobarak, N. A. (1993). From Order Take to Policy MakerFThe Expanding Role of Planning in the socio-

economic development of Saudi Arabia from 1932 to Present, A Ph.D. Dissertation, City and Regional Planning,

The University of Pennsylvania.

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–20 19

Alp, A. V. (1988). Architects’ response to traditional and vernacular architecture of Saudi Arabia. In Preservation of Islamic architectural heritage: Proceedings of the conference on the preservation of architectural heritage of Islamic

cities (pp. 279–290). Riyadh, Saudi Arabia: King Saud University Press. Benna, U. G., & Awad, M. H. (1995). The role of industrial centres in sapatial development. In S. Al-Hathloul, & N.

Edadan (Eds.), Urban development of Saudi Arabia: Challenges and opportunities (pp. 113–137). Riyadh: Dar Al

Sahan. Benna, U.G., & Al-Deufi, A. (1999). Harmonizing the environmental concerns with industrial development in Jubail

Industrial City, in Symposium on Innovation and Distinction in Urban and Infrastructure Development

of the Kingdom in 100 years, 7–9 February 1999, Ministry of Public Works & Housing, Riyadh, Saudi Arabia, pp. 119–132.

Daghistani, A. M., & Lee, C. (1982). Urban planning and development in Saudi Arabia. In I. Serageldin, & S. El-Sadek (Eds.), The Arab city: Its character and Islamic cultural heritage (pp. 142–150). Riyadh, Saudi Arabia: Arab Urban

Development Institute. Eben Saleh, M. A. (1998). Socio-economic development in formerly isolated rural contexts-Al-Alkhalaf village,

southwestern Saudi Arabia. Canadian Journal of Development Studies, XIX(2), 221–258.

Fathy, H. (1973). Architecture for the poor. Chicago: University of Chicago. Mashabi, O. (1995). Institution context of spatial development planning. In S. Al-Hathloul, & N. Edadan (Eds.), Urban

development of Saudi Arabia: Challenges and opportunities (pp. 49–76). Riyadh: Dar Al Sahan.

Masood, R. (1984). Industrialization in oil-based economies. New Delhi: ABC Publishing House. Ministry of Planning (1970). First Development PlanF1970–75. Riyadh, Saudi Arabia: Ministry of Planning. Ministry of Planning (1975). Second Development PlanF1975–80. Riyadh, Saudi Arabia: Ministry of Planning. Ministry of Planning (1980). Third Development PlanF1980–85. Riyadh, Saudi Arabia: Ministry of Planning.

Ministry of Planning (1985). Fourth Development PlanF1985–90. Riyadh, Saudi Arabia: Ministry of Planning. Ministry of Planning (1990). Fifth Development PlanF1990–95. Riyadh, Saudi Arabia: Ministry of Planning. Ministry of Planning (1995). Sixth Development PlanF1995–2000. Riyadh, Saudi Arabia: Ministry of Planning.

Mubarak, F. (1995). The role of state in shaping urban forms. In A. Al-Hathloul, & N. Edadan (Eds.), Urban development of Saudi Arabia: Challenges and opportunities (pp. 247–285). Riyadh: Dar Al Sahan.

Mostyn, T., & Hourani, A. (Eds.) (1988). The Cambridge encyclopaedia of the Middle East and northern Africa.

Cambridge, New York, New Rochelle, Melbourne, Sydney: Cambridge University Press. Saqqaf, A. Y. (Ed.) (1987). The Middle East city: Ancient traditions confront a modern world. New York: A PWPA

Book.

Simon, D. (1989). Sustainable developmentFtheoretical construct or attainable goal? Environmental Conservation, 16(1), 41–48.

I.M. Al-But’hie, M.A. Eben Saleh / Habitat International 26 (2002) 1–2020

Term Paper/Jubail Industrial city/1-s2.0-S136403211500756X-main.pdf

Wind speed and power characteristics for Jubail industrial city, Saudi Arabia

M.A. Baseer a,b, J.P. Meyer a, Md. Mahbub Alam c,n, S. Rehman d

a Mechanical and Aeronautical Engineering Department, University of Pretoria, Pretoria, South Africa b Department of Mechanical & Manufacturing Engineering Technology, Jubail Industrial College, Jubail, Saudi Arabia c Institute for Turbulence–Noise–Vibration Interaction and Control, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China d Center for Engineering Research, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

a r t i c l e i n f o

Article history: Received 16 November 2014 Received in revised form 19 May 2015 Accepted 25 July 2015 Available online 25 August 2015

Keywords: Wind speed Wind rose Weibull parameters Frequency distribution Wind shear exponent Capacity factor

a b s t r a c t

This paper presents the wind characteristics and resource assessment of the largest industrial base in the Middle East (Jubail industrial city) using measured hourly mean wind speed data at 10, 50 and 90 m above ground level (AGL) from 2008 to 2012. At respective heights, the mean wind speeds were found to be 3.34, 4.79 and 5.35 m/s. At 50 and 90 m AGL, the availability of wind speed above 3.5 m/s was more than 75%. The prevailing wind direction was from the north-west. The local wind shear exponent calculated using measured wind speed values at three heights was found to be 0.217. The mean wind power density values at measurement heights were 50.92, 116.03 and 168.46 W/m2 respectively. The comparison of energy output from five commercially selected wind turbines of rated power ranging from 1.8–3.3 MW showed that the most efficient wind turbine is 3.0 MW rated power. The annual energy production from this turbine was estimated to be 6285 MWh with a plant capacity factor of 25%.

& 2015 Elsevier Ltd. All rights reserved.

Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1193 2. Site, equipment and data description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1195 3. Results and discussion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1195

3.1. Annual, seasonal and diurnal behaviour of mean wind speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1198 3.2. Weibull parameters and wind frequency analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200 3.3. Air density, wind power density (WPD), wind shear exponent (WSE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1201 3.4. Energy output analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203

4. Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203 Acknowledgement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1203

1. Introduction

The cleanest sources of energy are those which use the natural resources of the earth. These sources are known as renewable sources of energy and will never die out unlike fixed reserves of

fossil and nuclear fuels. Some of the common sources of renewable energies are wind, solar photovoltaic, solar thermal, hydro, wave, geothermal, and biomass. Wind is a very promising energy source and is receiving global recognition compared to other renewable energy sources, due to its low production, operation and main- tenance cost and ease of maintenance, besides availability of efficient multi-megawatt wind turbines.

Saudi Arabia is experiencing rapid population as well as industrial growth and resulting in ever increasing demand on power and water supplies. The total population of Saudi Arabia increased by more than five times within last four and half decades, from 5,772,000 in 1970 to 30,770,375 in 2014 [1]. The number of operating industries has

Contents lists available at ScienceDirect

journal homepage: www.elsevier.com/locate/rser

Renewable and Sustainable Energy Reviews

http://dx.doi.org/10.1016/j.rser.2015.07.109 1364-0321/& 2015 Elsevier Ltd. All rights reserved.

n Corresponding author at: Institute for Turbulence-Noise-Vibration Interaction and Control, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China.

E-mail addresses: [email protected] (M.A. Baseer), [email protected] (J.P. Meyer), [email protected] (Md.M. Alam), [email protected] (S. Rehman).

Renewable and Sustainable Energy Reviews 52 (2015) 1193–1204

increased by more than thirty times within last four decades, from 198 in 1974 to 6471 in 2013 [2]. Total GDP (in constant prices) achieved by the manufacturing industries increased from US $ 4 billion in 1975 to more than US $ 45 billion at the end of 2013. Also, the growth rate of the manufacturing industries continued to increase throughout this period at an average of 6% per annum, which is considered one of the highest among the other economic sectors [2]. The region-wise share of the global installed wind power capacity is presented in Fig. 1 [3]. The installed wind power capacity in Africa and Middle East is just 1% of the global installed capacity of 369,596MW by the end of year 2014. Therefore, Saudi Arabia is exploring alternate sustainable and reliable sources of energy for generating power and reducing con- sumption of the nation's fossil fuel reserves. So, it was determined that a balanced energy mix of alternative and conventional energy is strategically important to Saudi Arabia's long term prosperity, energy security and its leading position in the global energy market [4]. Wind energy utilisation is one of the renewable energy options Saudi Arabia is considering seriously.

Meteorological parameters; such as wind speed, wind direction, temperature, relative humidity, barometric pressure, global solar radiation etc.; are highly site and time dependent in general while wind speed and direction are highly fluctuating components among these parameters. Hence, it is necessary and critical to understand the wind speed variability and availability during different hours of the day and different months of the year for successful and profitable development and utilisation of wind power. So, it is required to perform wind resource assessment of the site of interest to deter- mine the feasibility of the wind farm development. Moreover, a small error in wind speed data gives a large error in energy yield calculations. Hence, accuracy in wind speed measurements can minimise the risk of huge investments [5].

The wind speed measurements are typically made at a different and lower height compared to the wind turbine hub height. The wind speed increases with height by a site-dependent power factor known as wind shear exponent. Wind speed can be extrapolated to the hub height by using the wind power law in conjunction with local wind shear exponent (WSE). If the estimated WSE is not accurate, the wind power law will lead to an error in the calculation of the wind speed at hub height and consequently the energy yield estimation [5]. Air density is another critical parameter that depends on air pressure and temperature at the site and directly affects the wind power density (WPD) and hence the energy yield estimates. Therefore, the actual air density should be calculated using the local pressure and temperature measurements for accurate energy output estimation [5].

To optimise the design of a wind turbine, data on speed range over which the turbine must operate to maximise energy extrac- tion is required. This in turns requires the knowledge of the frequency distribution of the wind speed. Masseran et al. [6] presented nine frequency distribution functions suitable for fitting wind data: Weibull, Burr, Gamma, Inverse Gamma, Inverse Gaus- sian, Exponential, Rayleigh, Lognormal and Erlang. Rehman et al. [7] fitted the wind speed data of ten locations in Saudi Arabia to Weibull distribution function and concluded that this distribution accurately describes the wind data of this region. Similar studies

elsewhere also claims that among all the frequency distribution functions that have been proposed for wind speed, the two- parameter Weibull distribution is most widely used to accurately describe wind regimes [8–10].

Various studies on wind resource assessment are reported for Saudi Arabian locations. In 1986, Ansari et al., [11] developed wind atlas for Saudi Arabia by using measured wind speed at 8–12 m height above the ground level for 20 different locations. The hourly mean wind speed and direction data during the period 1970–1982 was used to develop the wind atlas. This atlas showed the seasonal average wind speed contours in different months over the entire kingdom. The long term annual mean wind speed was found to be below 4 m/s in most of the regions. However, the data used were not reliable enough to determine the wind potential because, the sensors were mounted at a height of 8–12 m and the weather stations were located at low windy sites like airports. This wind atlas, which was the first effort towards wind resource assessment, also included the wind speed fre- quency distribution in different wind speed bins and the wind rose diagrams [11]. To better understand the wind power potential in the kingdom, Alawaji et al. [12] in 1996 performed wind speed measurements at 20, 30 and 40 m AGL at different locations in the Kingdom. In this study, six anemometers were installed on every wind tower, two each at 20, 30 and 40 m height to get reliable results. The annual average wind speed at 40 m AGL at Arar, Dhahran, Gassim and Riyadh was reported to be 5.3, 4.5, 4.0 and 4.5 m/s respectively [12]. Wind shear coefficients of wind speed at 20, 30, and 40 m AGL for Dhahran, Saudi Arabia was determined by Rehman and Al-Abbadi [5]. In this study, the energy yield was found to be around 120,000 MWh/year from a wind farm of 60 MW installed capacity consisting of 40 wind turbines each of 1500 KW rated power with a plant capacity factor of 24% [5]. In similar studies conducted by Shaahid et al. [13] at Taif, the wind speed was found to be less than 3 m/s for 46% of the time during the year. The annual energy produced from 15 MW wind farm (from 25 commercially available wind turbines of 600 kW rated power capacity each at 50 m hub height) was around 20,000 MWh/year. The cost of energy in this analysis was found to be 0.0576 US$/kW h. [13].

Some of the wind resource assessment studies reported for different countries were reviewed and discussed below. Prasad et al. [14] performed extensive literature survey on wind resource assessment (WRA) and discussed different WRA techniques. This methodology included preliminary wind survey to choose the best site for installing wind speed sensors, potential site selection, selecting the optimum wind turbine suitable for a site and the uncertainties involved in estimating the wind resource assessment using the different techniques. It was concluded that each WRA technique has its own advantages and selection of optimum technique is site dependent.

Fazelpour et al. [15] employed the Weibull probability distribu- tion function for WRA using mean wind data at 10 m AGL over a six-year period at Tabriz and Ardabil, Iran. The hourly, diurnal, seasonal, monthly, and annual wind speed variations were ana- lysed. The yearly values of the Weibull shape parameter vary from 1.81 to 2.13 m/s with a mean of 1.99 m/s for Tabriz and from 2.62 to 2.98 m/s with a mean of 2.86 m/s for Ardabil. Also, yearly values of the Weibull scale parameter vary from 3.35 to 4.45 m/s with a mean of 4.18 m/s for Tabriz and from 3.68 to 4.55 m/s with a mean of 4.16 m/s for Ardabil. The results show that the highest wind power potential occurs during months of August and July in Tabriz and during months of October and September in Ardabil.

Komleh et al. [16] analysed the wind speed data of Firouzkooh, Iran. For this purpose, 10-year period (2001–2010) wind data were analysed to calculate and estimate the wind power generation potential. Weibull and Rayleigh distribution functions were

Africa &

Middle East 1%

Asia 39%

Europe 36%

Latin America

& Caribbean

2%

North America

21%

Pacific Region

1%

Fig. 1. Regional distribution of global Installed wind power capacity. Data source: [3].

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–12041194

applied to find out the best fitting tool to the wind speed data. Results showed that Weibull and Rayleigh distribution functions can fit the values of wind speed well with almost the same coefficient of determination value of 0.97. The average values of wind power density based on mean and root mean cube speed approaches were 203 and 248 W/m2/year, respectively.

Chandel et al. [17] assessed wind resource potential of the western Himalayan Indian state of Himachal Pradesh. Weibull parameters and WPD were determined for these locations. The highest daily mean wind speeds were observed in summers and lowest in winters in the region. Wind shear analysis showed that wind speeds at 30 m, 50 m, 80 m and 100 m hub heights were found to increase by 10–17%, 26%, 34% and 39% respectively than those measured at 10 m height. The mean wind speed and WPD for the 12 locations were found to be in the range 3.9–4.7 m/s, 4.7– 5.8 m/s, 5.7–7 m/s, 6.2–7.7 m/s and 14.09–22. W/m2, 52.67– 82.79 W/m2, 97.23–152.82 W/m2, 170.9–268.62 W/m2, 223.37– 351.1 W/m2 at 30 m, 50 m, 80 m and 100 m heights respectively; thereby indicating fairly good wind potential for rooftop micro- wind turbines, battery charging, water pumping and wind power generation in western Himalayan region.

For wind resource assessment of Selcuk University campus in Turkey, one year wind data at three different heights was analysed [18]. Energy output from a 6 MW installed capacity wind farm composed of 1.0, 1.5, and 2.0 MW rated power wind turbines was calculated and reported by Faruk et al. [18]. The minimum basic payback period was found to be 6.44 years. Wind characteristics of six locations in Turkey were analysed using the wind speed data during the period 2000–2006 by Ucar and Balo [19]. The annual mean wind speed of the six stations fell in the range from 5.9 to 8.7 m/s at 10 m height. The mean annual value of Weibull shape parameter k was between 1.71 and 1.96 while the annual value of scale parameter c was between 6.81 and 9.71 m/s. A technical assessment of electricity generation from four wind turbines of rated capacities of 600 kW, 1000 kW, 1500 kW and 2000 kW was made by Ucar and Balo. The annual energy obtained from 2000 kW rated power wind turbine was in the range of 4250– 6900 MW h with a plant capacity factor between 24 and 39% at these six locations.

Jowder [20] assessed the wind power potential of the kingdom of Bahrain by analysing hourly wind speed data for two years at 10 m height. The measured wind speed data at 10 m was extra- polated to 30 m and 60 m heights using the wind power law with wind shear exponent of 0.409. The average annual wind power density was 114.54 W/m2 at 10 m height, 433.29 W/m2 at 30 m height and 816.70 W/m2 at 60 m height. Fyrippis et al. [21] conducted the wind power potential assessment of Koronos village, Greece, using measured wind data at different heights and studied the wind characteristics using the Weibull and Rayleigh distribution functions. The annual mean wind speed was found to be 7.4 m/s and the corresponding wind power density was 420 W/m2 at 10 m above ground level. The results revealed that the Weibull model adequately fitted the actual experimental wind speed data.

The wind energy potential was estimated by Gao et al. [22] using five types of mixture probability functions for 11 years of measured wind data in Hong Kong. Based on the WRA, they identified and selected a potential offshore area for the develop- ment of the wind farm. The authors used multi-population genetic algorithm (MPGA) for getting minimum cost of energy (COE) with maximum power output. The study found annual offshore wind power potential of 112.81�108 kW h which accounted for 25% of the total annual power consumption of Hong Kong in 2011. Onea et al. [23] presented the wind resource assessment of north- western side of the Black Sea using measured wind speed data over a period of 11 years. The analysis indicated that the Romanian

coastal region has more wind energy potential during the winter season, with an average annual wind speed of about 9.7 m/s at 80 m and a power density of 870 W/m2. This study concluded that the north-western side of the Black Sea is a promising site for the wind farm development. Thus, wind resources assessment studies have been conducted in many parts of the world and reported in the literature. Some of the similar studies reported for countries like Korea [24], China [25], Malaysia [26], India [27], Kyrgyzstan [28], Pakistan [29], Oman [30], Turkey [31], Algeria [32], Iran [33], Egypt [34], Nigeria [35], Greece [36], Mexico [37], USA [38] and Venezuela [39] were reviewed to assess the methodology and techniques used for WRA.

This study aims at conducting a comprehensive and accurate wind resource assessment for the largest industrial city of Saudi Arabia for the first time and to calculate energy output based on a few commercially available wind machines. The size of this industrial city is expanding and is expected to be more than double in the next decade. The Kingdom has taken initiatives to supplement its existing fossil fuel based energy through renew- able sources of energy particularly wind energy besides solar PV and solar thermal options [4]. This study will provide helpful information for wind power development programme in this industrial city of Jubail.

2. Site, equipment and data description

In year 1933, geologists explored oil in Jubail, Saudi Arabia. In 1983, the largest engineering and construction project ever was started in Jubail to establish the biggest industrial base in the region. Presently, Jubail industrial city is host to more than 160 industrial enterprises and home to almost 70,000 residents. Jubail infrastructure is capable of running continuously without power failure in any of the existing facilities while meeting community requirements within high modern living standards where all the necessities of life and tourism and recreation are available.

To study the viability of wind power generation at Jubail industrial city, the historical wind data for five years was obtained from the Environment and Control Department (Royal Commission for Jubail and Yanbu). This governmental organisation is responsible for the maintenance, calibration and collection of meteorological data at Jubail industrial city. In the present study, wind characteristics and resource analysis is carried out using the data collected fromweather station 1, shown in Fig. 2. Wind speed at this site was collected at three heights, 10, 50 and 90 m. The latitude, longitude and Universal Transverse Mercator (UTM) coordinates of the weather station are given in Table 1. The technical specifications of the meteorological sensors installed on all the seven wind towers at Jubail Industrial city are presented in Table 2. The list of weather parameters recorded are tabulated in Table 3. Monthly averaged metrological data (tempera- ture, atmospheric pressure and relative humidity) at the weather data collection tower is given Table 4.

The weather station at site 1 is located in the middle of Jubail Industrial area 1. The weather station is mostly surrounded by plain terrain with industrial sheds of around 10–12 m height in south-west direction located 100 m away. There is a mobile phone network of around 30 m height tower located in the south-east direction located 150 m away. An industrial workers camp with around 8000 residents is located in west direction from the weather station at a distance of 900 m.

3. Results and discussion

The detailed wind data analysis over the entire period of data collection from 2008 to 2012 at Jubail industrial city is presented in

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–1204 1195

this section. The complete set of ten minutes average wind speed values were first checked for erroneous values and completeness as per the existing standard practices. The annual mean wind speeds at

10, 50 and 90 m height were found to be 3.34, 4.79 and 5.35 m/s with respective standard deviations of 0.14, 0.17, and 0.22. The other meteorological parameters such as average ambient temperature,

Fig. 2. Weather stations at Jubail industrial city.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–12041196

Table 1 Latitude/longitude and UTM coordinates of weather data collection sites in Jubail.

Degrees, minutes, seconds UTM

Site01 Latitude 271 2015.76″N 2,991,457.88 Longitude 4913202.56″E 354,594.12

Site02 Latitude 271 4027.49″N 2,995,436.09 Longitude 4913603.24″E 361,271.25

Site03 Latitude 271 0036.85″N 2,988,282.92 Longitude 4913909.56″E 366,327.78

Site04 Latitude 26155039.92″N 2,979,084.69 Longitude 49142042.89″E 372,114.33

Site06 Latitude 26155013.40″N 2,978,520.20 Longitude 4912900.10″E 349,410.12

Site08 Latitude 271 7054.03″N 3,001,869.16 Longitude 49131057.02″E 354,562.88

Site09 Latitude 271 1049.95″N 2,990,576.71 Longitude 49136041.14″E 362,261.81

Table 2 Specifications of the wind speed sensor at data collection site.

Performance characteristics

Manufacturer: Met One Instruments, Inc. Maximum operating range: 0–60 m/s Starting speed: 0.22 m/s Calibrated range: 0–50 m/s Accuracy: 71% or 0.07 m/s Resolution: o0.1 m/s Temperature range: �50 1C to þ65 1C Distance constant: Less than 1.5 m of flow

Table 3 Parameter list of the weather data collection tower.

Parameter code Description Unit

ATM Ambient temperature 1C PRE Precipitation mm PRS Pressure mb RH Relative humidity % GSR Global solar radiation Langley VWD10 Wind direction 10 m deg VWD50 Wind direction 50 m deg VWD90 Wind direction 90 m deg VWS10 Wind speed 10 m m/s VWS50 Wind speed 50 m m/s VWS90 Wind speed 90 m m/s

Table 4 Metrological data at the weather data collection tower.

Monthly average (2008–2012)

Temperature (oC) Atmospheric pressure, (mb) Relative humidity, (%)

Jan 15.28 1017.9 63.12 Feb 17.42 1015.5 58.62 Mar 21.05 1013.2 47.05 Apr 26.06 1009.2 45.03 May 32.16 1004.9 36.88 June 35.71 999.5 27.98 July 36.77 996.3 32.96 Aug 36.14 998.0 43.69 Sep 33.56 1003.6 45.59 Oct 29.15 1010.3 54.04 Nov 22.68 1014.8 58.64 Dec 17.19 1017.5 60.58 Mean 26.93 1008.4 47.85

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–1204 1197

barometric pressure, global solar radiation, and relative humidity values near ground level were found to be 27.35 1C, 1008.39 mb, 1550 kW h/m2, and 42%; respectively. The derived parameters such as monthly average air density was found to vary between a minimum of 1.114 kg/m3 and a maximum of 1.238 kg/m3 with overall mean of 1.17 kg/m3. The long term average values of WPD, calculated using ten minutes meanwind speed values at different heights were 50.92, 116.03, and 168.46W/m2. The annual energy production from a commercially available wind machine of 3 MW rated power was estimated to be 6285 MW h/year.

3.1. Annual, seasonal and diurnal behaviour of mean wind speed

The wind speed statistics (median, maximum, minimum, 75th percentile and 25th percentile) at 10 m height of all the seven weather stations at Jubail are illustarted in Fig. 3. Since these weather station lie within the radius of 15 km boundary, it can be observed from Fig. 3 that there is not much variation in wind speed statistics. Sites 4 and 9 seem to have the highest mean wind speed. Out of all these seven sites, wind speed data at 10, 50 and 90 m height is available for site 1 only. The wind rose diagrams at

NORTH

SOUTH

WEST EAST

3%

6%

9%

12%

15%

WIND SPEED (m/s)

>= 11.1

8.8 - 11.1

5.7 - 8.8

3.6 - 5.7

2.1 - 3.6

0.5 - 2.1

Calms: 0.56%

Fig. 6. Wind rose plot at 90 m height.

0.0

1.0

2.0

3.0

4.0

5.0

6.0

2008 2009 2010 2011 2012

A ve

ra ge

w in

d sp

ee d,

m /s

Year

10 m

50 m

90 m

Fig. 7. Annual variation of hourly mean wind speed at different heights.

0

2

4

6

8

10

12

Site 1 Site 2 Site 3 Site 4 Site 6 Site 8 Site 9 Jubail weather stations

H ou

rly m

ea n

w in

d sp

ee d,

m /s

Fig. 3. Wind speed statistics of all weather stations at Jubail at 10 m AGL.

NORTH

SOUTH

WEST EAST

3%

6%

9%

12%

15%

WIND SPEED (m/s)

>= 11.1

8.8 - 11.1

5.7 - 8.8

3.6 - 5.7

2.1 - 3.6

0.5 - 2.1

Calms: 1.82%

Fig. 4. Wind rose plot at 10 m height.

NORTH

SOUTH

WEST EAST

3%

6%

9%

12%

15%

WIND SPEED (m/s)

>= 11.1

8.8 - 11.1

5.7 - 8.8

3.6 - 5.7

2.1 - 3.6

0.5 - 2.1

Calms: 0.61%

Fig. 5. Wind rose plot at 50 m height.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–12041198

10, 50 and 90 m heights for site 1 are shown in Figs. 4–6 respectively. The hourly mean values of wind speed and direction were used for entire period of data collection in these wind rose diagrams. It can be observed from these plots that the most prevailing wind direction at all the heights was from the north- west. The percentage of calm winds (wind speed less than 0.5 m/s) decreased with increasing height, i.e. 1.82, 0.61 and 0.56% at 10, 50 and 90 m respectively.

The annual, seasonal and diurnal variations of hourly mean wind speed at 10, 50 and 90 m AGL over the entire period of data

collection at station 1 are shown in Figs. 7–9 respectively. Over the period of five years, the annual mean wind speeds at heights of measurements were 3.34, 4.79 and 5.35 m/s with respective values

Table 5 Weibull shape and scale parameters for Jubail.

Month 10 m AGL 50 m AGL 90 m AGL

k c K c K c

Jan 1.92 3.58 2.64 5.76 2.00 5.81 Feb 1.85 4.26 2.02 6.33 1.91 6.51 Mar 1.69 4.35 2.10 6.23 1.91 6.74 Apr 1.78 3.07 2.43 4.59 1.99 4.58 May 1.75 3.99 2.31 5.90 1.96 6.25 Jun 1.71 4.23 2.02 6.33 1.96 6.79 Jul 1.52 3.64 1.96 5.33 1.67 5.72 Aug 1.80 3.93 2.37 5.50 2.21 6.28 Sep 1.82 3.61 2.37 5.14 2.17 5.80 Oct 1.92 2.78 2.80 4.62 2.09 4.29 Nov 2.11 3.38 2.74 4.99 2.43 5.84 Dec 1.78 3.30 2.52 5.36 1.90 5.61

0 2 4 6 8 10 12 0

0.05

0.1

0.15

0.2

0.25

Wind speed, m/s

% F

re qu

en cy

d is

tri bu

tio n

Wind speed, 10 m Weibull fit. k=1.72, c=3.67m/s

Fig. 10. Actual wind speed frequency distribution and Weibull fit at 10 m AGL.

0 2 4 6 8 10 12 14 16 0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.16

0.18

Wind speed, m/s

% F

re qu

en cy

d is

tri bu

tio n

Wind speed, 50 m Weibull fit, k=2.22, c=5.49m/s

Fig. 11. Actual wind speed frequency distribution and Weibull fit at 50 m AGL.

0 2 4 6 8 10 12 14 16 0

0.05

0.1

0.15

Wind speed, m/s

% F

re qu

en cy

d is

tri bu

tio n

Wind speed, 90 m Weibull fit, k=1.91, c=5.82 m/s

Fig. 12. Actual wind speed frequency distribution and Weibull fit at 90 m AGL.

2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

A ve

ra ge

w in

d sp

ee d,

m /s

Months (2008 -2012)

10 m 50 m 90 m

Fig. 8. Seasonal variation of hourly mean wind speed at different heights.

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

0: 00

1: 00

2: 00

3: 00

4: 00

5: 00

6: 00

7: 00

8: 00

9: 00

10 :0

0 11

:0 0

12 :0

0 13

:0 0

14 :0

0 15

:0 0

16 :0

0 17

:0 0

18 :0

0 19

:0 0

20 :0

0 21

:0 0

22 :0

0 23

:0 0

A ve

ra ge

w in

d sp

ee d,

m /s

Hours

10 m AGL

50 m AGL

90 m AGL

Fig. 9. Diurnal variation of hourly mean wind speed at different heights.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–1204 1199

of standard deviation of 0.14, 0.17 and 0.22. At 90 m, the annual average wind speed was always above 5.0 m/s during the data collection period with a minimum of around 5.0 m/s occurring in year 2010 as can be seen in Fig. 7. At 50 m, the annual mean wind speed always remained above 4.75 m/s with maximum of more than 5.0 m/s in 2011. This is an indication that wind turbine with 50 m and more hub heights can be used in the study area for wind farm development. These estimated mean speed values are com- parable to the values reported in similar studies in Dhahran [5] and Bahrain [20]. The seasonal variation of wind speed shows that wind speed was the highest in the month of June and the lowest in October as shown in Fig. 8. This seasonal trend of wind speed coincides with the load pattern of Saudi Arabia and should be helpful in partial replacement of fossil fuel based energy genera- tion by wind. Similar seasonal wind speed trend was reported for the location of Dhahran [5]. The monthly mean wind speed was more than 5.5 m/s during February, March, May, June, July, November and December months as seen from Fig. 8 which means that more power can be generated during these months from wind. The monthly mean wind speed values at 10, 50 and 90 m heights were 3.34, 4.8, and 5.35 m/s with standard deviation of 0.33, 0.42 and 0.54, respectively.

The diurnal variation showed two peaks at 90 m, one from 04:00 h to 07:00 h and other from 13:00 to 16:00 h with lows between 08:00 and 10:00 and 20:00 and 22:00 h as observed from Fig. 9. Similar type of trend was noticed in the hourly mean values of wind speed at 50 m while at 10 m, the wind speed started increasing from 00:00 h and continued to increase till it reached a peak between 14:00 and 15:00 h and then continued to decrease till 23:00 h. The highest values of wind speed were 5.26, 6.28 and 6.33 m/s at 15:00 h corresponding 10, 50 and 90 m AGL while the lowest values were 2.29, 4.19 and 4.77 m/s at around 21:00 to 22:00 h, as seen from Fig. 9.

3.2. Weibull parameters and wind frequency analysis

The two-parameter Weibull distribution is frequently used to characterise wind behaviour because it provides a good represen- tation of wind data [2–4]. This distribution function shows the probability of the wind speed in a 1 m/s bins centred on a particular wind speed. The Weibull distribution function is expressed as [40]:

PðvÞ ¼ k v

v c

� �k�1 exp � v

c

� �k � �

; ð1Þ

where P(v) is the frequency of incidence of wind speed, v. The scale factor, c in m/s, is indicative of mean wind speed and k is the dimensionless shape factor, which describes the shape and width of the distribution.

The Weibull distribution is therefore determined by the para- meters, c and k. The cumulative Weibull distribution, P(v), which gives the probability of the wind speed greater than the value, v, is expressed as:

PðvÞ ¼ exp � v c

� �k � �

; ð2Þ

In this study, the Weibull distribution parameters, c and k are determined by maximum likelihood method. The seasonal values of both the scale factor (c) and shape parameter (k) are sum- marised in Table 5. The maximum values of shape parameter of 2.11, 2.80, and 2.43 were found in November, October and

1.1

1.12

1.14

1.16

1.18

1.2

1.22

1.24

1.26

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

A ir

de ns

ity , K

g/ m

3

Month

2008 2009 2010 2011 2012

Fig. 13. Seasonal air density variation at Jubail.

0

20

40

60

80

100

120

140

160

180

200

2008 2009 2010 2011 2012

A ve

ra ge

w in

d po

w er

d en

si ty

(W /m

2 )

Year

10 m

50 m

90 m

Fig. 14. Variation of mean annual wind power density per unit.

0

50

100

150

200

250

300

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Year (2008 -2012)

10 m

50 m

90 m

A ve

ra ge

w in

d po

w er

d en

si ty

(W /m

2 )

Fig. 15. Variation of mean seasonal wind power density per unit area.

0

50

100

150

200

250

0: 00

1: 00

2: 00

3: 00

4: 00

5: 00

6: 00

7: 00

8: 00

9: 00

10 :0

0 11

:0 0

12 :0

0 13

:0 0

14 :0

0 15

:0 0

16 :0

0 17

:0 0

18 :0

0 19

:0 0

20 :0

0 21

:0 0

22 :0

0 23

:0 0

Hours

90 m 50 m 10 m

A ve

ra ge

w in

d po

w er

d en

si ty

(W /m

2 )

Fig. 16. Variation of mean diurnal wind power density per unit area.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–12041200

November at 10, 50, and 90 m while the corresponding minimum values of 1.52, 1.96, and 1.67 were observed in the month of July. The highest values of scale parameter ‘c’ of 4.35, 6.33, and 6.74 m/s were found in the months of March, February and June, and March at 10, 50, and 90 m height; respectively. The overall mean values of scale and shape parameters at measurement heights were 3.67, 5.49, 5.82 m/s and 1.72, 2.22, 1.91; respectively.

The actual wind speed frequency distribution and Weibull fit at 10, 50 and 90 m AGL are shown in Figs. 10–12 respectively. It is

evident from these figures that actual wind speed data is char- acterised well by the two-parameter Weibull distribution. The analyses of the Weibull percentage frequency distributions revealed that wind speed remained above 3.5 m/s for 49.28%, 75.7% and 77.7% of time at 10, 50 and 90 m height respectively. This implies that at Jubail, a wind turbine with a hub height of 50 m and cut-in wind speed of 3.5 m/s can produce energy for approximately 76% of the time and about 78% of the time with a hub height of 90 m.

The values of scale factor, c increases with height, whereas no definite trend could be seen in the values of shape parameter, k. However, highest value of shape parameter, k was found at 50 m height followed by 90 m and then 10 m.

3.3. Air density, wind power density (WPD), wind shear exponent (WSE)

The air density was estimated using the following expression:

P ¼ ρ RT

kg=m3� � ð3Þ

where P is the air pressure in Pascals, R is the specific gas constant of air, 287.05 J/kg K and T is the local air temperature in degrees Kelvin. The WPD is calculated using the well know following equation:

WPD¼ § ρV3 W=m2� � ð4Þ where V is the ten minutes or hourly mean wind speed. The lowest air density was observed in July and the highest in January, as shown in Fig. 13. This simply means that air is lighter in summer time compared to that in winter season and hence less wind power density is expected in summer compared to that in winter. The mean wind power density values during the five years of data collection period at 10, 50, and 90 m AGL were found to be 50.92, 116.03, and 168.46 W/m2 respectively. The annual, seasonal and diurnal variations of wind power density are shown in Figs. 14–16 respectively. The annual WPD trend followed almost the same trend as annual mean wind speed depicted in Fig. 7 with highest value of 186 W/m2 in 2008 and a minimum of 146.2 W/m2 in year 2010 at 90 m height as seen from Fig. 14. The seasonal variation of wind power density shows the highest values in June and the lowest in October as shown in Fig. 15. Higher values of WPD, (between 170 and 270 W/m2), were observed during January to March, May to July and November to December while less than

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

2008 2009 2010 2011 2012

W in

d sh

ea r e

xp on

en t

Year

10 m - 50 m

10 m - 90 m

50 m - 90 m

Fig. 18. Variation of mean annual wind shear at different height.

Fig. 17. Variation of wind speed with height and fitting curve.

0.100

0.120

0.140

0.160

0.180

0.200

0.220

0.240

0.260

0.280

0.300

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

W in

d sh

ea r e

xp on

en t

Month

10 m - 50 m

10 m - 90 m

50 m - 90 m

Fig. 19. Variation of mean diurnal wind shear at different heights.

-0.05

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0: 00

1: 00

2: 00

3: 00

4: 00

5: 00

6: 00

7: 00

8: 00

9: 00

10 :0

0 11

:0 0

12 :0

0 13

:0 0

14 :0

0 15

:0 0

16 :0

0 17

:0 0

18 :0

0 19

:0 0

20 :0

0 21

:0 0

22 :0

0 23

:0 0

W in

d sh

ea r e

xp on

en t

Hours

10 m - 50 m

10 m - 90 m

50 m - 90 m

Fig. 20. Variation of mean diurnal wind shear at different heights.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–1204 1201

150 W/m2 during rest of the months in the year at 90 m. Similar seasonal trends were observed at 50 and 10 m heights with lesser magnitudes of WPD. The diurnal variation of WPD showed clearly two peaks first between 03:00 and 07:00 h and the second between 13:00 and 15:00 h at 90 m height as shown in Fig. 18. However, the first peak was not distinctive at 50 while the second

peak was still visible and that too during the same time duration. Finally, at 10 m, the WPD started increasing right from 00:00 h and after reaching its peak between 13:00 and 15:00 h started decreasing towards the end of the day as seen from Fig. 16.

Wind shear is defined as the exponent α (alpha) in the power law equation that relates wind speeds at two different heights. It is important to perform WSE calculations only where valid upper and lower wind speed measurements are available for a given time interval. In practice, it has been found that α varies with elevation, time of day, season, temperature, terrain, and atmospheric stabi- lity. The larger the exponent the larger the vertical gradient in the wind speed. Although the power law is a useful engineering approximation of the average wind speed profile but actual profiles tend to deviate from this relationship. The wind shear profile obtained using the long term mean value of wind speed at three heights is shown in Fig. 17.

Table 6 Technical data of wind machines [41].

Wind machine

Cut-in speed (m/s)

Cut-out speed (m/ s)

Rated output (kW)

Rated wind speed (m/s)

Hub height (m)

Rotor diameter (m)

WT 1 3 25 3300 12 117 126 WT 2 3 22.5 3000 12 119 126 WT 3 4 23 2600 15 75 100 WT 4 3 25 2000 11.5 80 110 WT 5 4 20 1800 12 80 100

Fig. 21. Power curves of the selected wind machines.

Table 7 Wind speed at different hub heights, the power curve data and power output from selected wind machines.

Number of hours/year Power curve data (kW) Energy calculations (kW h)

Wind Speed (m/s)

75 m 80 m 117 m 119 m WT 5 1.8 MW

WT 4 2 MW

WT 3 2.6 MW

WT 2 3 MW

WT 1 3.3 MW

WT 5 1.8 MW

WT 4 2 MW WT 3 2.6 MW

WT 2 3 MW WT 1 3.3 MW

0 143 143 126 126 0 0 0 0 0 0 0 0 0 0 1 818 804 725 720 0 0 0 0 0 0 0 0 0 0 2 1132 1094 923 919 0 0 0 0 0 0 0 0 0 0 3 1217 1189 1031 1023 0 23 11 14 20 0 27,357.56 13,391.92 14,315.52 20,610.53 4 1269 1245 1063 1063 89 140 116 179 162 110,843.76 174,360.97 147,252.76 190,190.71 172,127.90 5 1272 1247 1132 1112 228 314 239 416 395 284,414.67 391,693.89 304,107.49 462,797.39 447,331.20 6 1049 1072 1048 1052 424 549 432 712 694 454,322.12 588,261.43 452,960.40 748,685.17 726,979.44 7 717 748 872 874 688 900 717 1148 1,060 514,388.18 672,891.52 513,854.63 1,002,892.5 923,898.63 8 527 562 693 691 1034 1347 1093 1713 1,714 580,843.05 756,668.84 575,744.66 1,183,138.6 1,187,252.63 9 305 327 512 527 1440 1775 1479 2219 2,432 470,668.49 580,164.29 450,883.15 1,168,872.2 1,244,619.68 10 130 142 279 288 1716 1972 1817 2566 2,999 243,566.09 279,902.29 236,095.67 738,677.29 836,344.93 11 76 76 165 165 1794 1999 2102 2858 3,260 136,284.30 151,857.47 159,682.05 471,354.28 537,653.94 12 55 59 78 85 1800 2000 2362 3000 3,300 106,150.18 117,944.64 129,857.47 254,889.72 257,281.20 13 31 32 60 61 1800 2000 2504 3000 3,300 57,568.97 63,965.52 77,584.24 182,908.80 197,904.17 14 13 15 32 31 1800 2000 2584 3000 3,300 26,994.82 29,994.24 33,568.95 92,952.36 105,543.11 15 5 5 13 15 1800 2000 2600 3000 3,300 9003.53 10,003.92 13,005.10 44,991.36 42,870.56 16 1 1 6 6 1800 2000 2600 3000 3,300 1797.55 1997.28 2596.46 18,001.80 19,801.98 17 0 0 4 4 1800 2000 2600 3000 3,300 0.00 0.00 0.00 11,983.68 13,182.05 18 0 0 1 1 1800 2000 2600 3000 3,300 0.00 0.00 0.00 2995.92 3295.51

Power output per year ( kWh) 2,996,845.69 3,847,063.85 3,110,584.94 6,589,647.41 6,736,697.439 Plant capacity factor % 19 22 13.6 25 23.3

Fig. 22. Comparison of the seasonal energy output from the selected wind machines.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–12041202

The following equation was used to estimate the wind shear exponent (WSE), α:

α¼ ln V2ð Þ� lnðV1Þ ln Z2ð Þ� lnðZ1Þ

ð5Þ

where V1 and V2 are thewind speeds at heights Z1 and Z2 respectively. Eq. (5) was used to find the annual, seasonal and diurnal variations of wind shear exponent as shown in Figs. 18–20. The annual values of WSE varied between 0.18 and 0.25 calculated based on WS at 10 and 50 mwith an increasing trend from 2008 to 2012, as shown in Fig. 18. However the WSE values calculated using WS values at 10 and 90m varied between 0.20 and 0.24 with almost constant values ofWSE of a little more than 0.20 for all the years except 2009. Largest variation in WSE values, calculated usingWS values at 50 and 90 m, was observed with a minimum of 0.10 in 2012 and a maximum of 0.28. 2009, as can be seen from Fig. 18. The monthly mean values of WSE calculated using WS data between 10 and 50 m and 10 and 90 m showed a decreasing trend from January to May with a persistence till August and then an increasing trend towards the end of the year, as shown in Fig. 19. However, the WSE values obtained using WS between 50 and 90 m did not show a seasonal change. The diurnal variation of the WSE showed lowest value during daytime, i.e. from 09:00 to 15:00 h, mainly due to high temperature and turbulence. The hourly mean values of WSE, based on WS between 10 and 50 m and 10 and 90 m, showed almost same values during 00:00 to 06:00 h and a sudden decrease in a short duration of 3 h from 06:00 to 09:00 h while lowest and almost constant values during 09:00 to 17:00 h, as can be seen from Fig. 20. These WSE values again started increasing from 18:00 till mid night. The WSE values estimated based on WS values between 50 and 90m behaved a little different with an increasing trend from 00:00 till 07:00 h and then a decreasing trend 10:00 h and lowest and almost constant values from 11:00 to 16:00 h. An increasing trend was seen between 17:00 and 20:00 h and then again decreasing towards mid night.

3.4. Energy output analysis

To find the energy output from selected wind turbines, frequency of occurrence of wind speed in different bins was determined. This wind speed frequency at different hub heights was determined by vertical extrapolation of wind speed using the local WSE value of 0.217 in the present case. The technical specifications of wind turbines (WT1, WT2, WT3, WT4, and WT5) used in this study are summarised in Table 6. The power curves of all the selected wind turbines are shown in Fig. 21. Table 7 summarises the number of hours the wind speed remained in different wind speed bins per year for Jubail at different heights. This table also includes the power curves data of all the selected wind turbines [36]. Finally, the power output in kW h for each wind speed bin, total power output per year and the plant capacity factor (PCF) for each of the five selected windmachines is also presented in this table. It can be observed from the % PCF data that the most efficient of the selected wind turbines was WT2 with rated power of 3 MW and a PCF of 25%. As per the present calculations, the maximum annual energy output of 6285 MWh/year can be achieved from this turbine (WT2). Wind turbine WT1 with annual energy yield of 6367 MWh and a PCF of 23.3% was found to be the second best turbine for Jubail industrial city. The third best turbine was WT4 with annual energy yield of 3486 MWh and a PCF of 22%. A PCF of 24% was reported in similar studies performed in Dhahran [5]. The comparison of the seasonal energy output from the selected wind machines is shown in Fig. 22. As seen from this figure, minimum monthly mean wind power was obtained in the months of April and October whiles the maximum in March. In general, an increasing trend was observed inmonthly power output from all turbines from January till March and then a decreasing trend towards end of the year except for dips in April and October.

4. Conclusions

The following main conclusions can be drawn from the wind resource assessment for Jubail industrial city:

� At 10, 50 and 90 m AGL, the annual mean wind speeds over the period 2008–2012 were 3.34, 4.79 and 5.35 m/s respectively.

� There was not much variation in mean annual wind speed. The monthly variation shows the wind speed was the highest in June and the lowest in October. The diurnal variation shows the wind speed to be high during daytime and low during night- time from 2008–2012.

� Most prevailing wind direction at all three heights was from the north-west.

� The percentage of calm winds (wind speed less than 0.5 m/s) decreased with increasing height, i.e. 1.82, 0.61 and 0.56% at 10, 50 and 90 m respectively.

� The Weibull parameter, c, was the highest in the month of March and the lowest in the month of October at all the measurement heights.

� The wind speed was found to be above 3.5 m/s for 49.3, 75.7 and 77.7% of time at 10, 50 and 90 m height respectively. The air density was observed to be the lowest in the month of July and the highest in the month of January.

� The wind shear exponent obtained from power law fitting of the wind shear profile was 0.217. The diurnal variation showed low values of WSE during daytime, i.e. from 9:00 AM to 3:00 PM. The seasonal variation of wind shear exponent did not show any specific pattern.

� The annual energy production from a commercially available wind turbine WT1 of 3 MW rated power was estimated to be 6285 MWh with a PCF of 25%.

Acknowledgement

The authors would like to acknowledge Jubail Industrial College, Royal Commission for Jubail and Yanbo, Saudi Arabia for providing the weather data used in this study. The authors would also like to acknowledge the technical support and guidance provided by King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia and University of Pretoria, Pretoria, Republic of South Africa. Alam wishes to acknowledge support given to him from the Research Grant Council of Shenzhen Government through grants JCYJ20120613145300404.

References

[1] Government annual report on Demographic survey by Central Department of Statistics and Information of Saudi Arabia, 2014. Available at: ⟨http://www. cdsi.gov.sa/english/index.php⟩; 2015 [accessed 16.05.15].

[2] Government annual report on Industrial growth of Saudi Arabia by Saudi industrial Development Fund, 2014. Available at: ⟨http://www.sidf.gov.sa/En/ Pages/default.aspx⟩; 2015 [accessed 16.05.15].

[3] Statistics from the Global wind Energy Council (GWEC). available at: ⟨http:// www.gwec.net/global-figures/graphs⟩; 2015 [accessed 16.05.15].

[4] The Vision, King Abdullah City of Atomic and Renewable energy (KACARE). Available at: ⟨http://www.kacare.gov.sa/en/?page_id=84⟩; 2015 [accessed 16.05.15].

[5] Rehman S, Al-Abbadi NM. Wind shear coefficients and energy yield for Dhahran. Renew Energy 2007;32(5):738–49.

[6] Masseran Nurulkamal, Mahir Razali Ahmad, Ibrahim Kamarulzaman, Zaharim Azami, Sopian Kamaruzzaman. Res J Appl Sci, Eng Technol 2013;6(10):1774–9.

[7] Rehman S, Halawani TO, Husain T. Weibull parameters for wind speed distribution in Saudi Arabia. Sol Energy 1994;53(6):473–9.

[8] Rehman S, Halawani TO. Statistical characteristics of wind in Saudi Arabia. Renew Energy 1994;4(8):949–56.

[9] Islam MR, Saidur R, Rahim NA. Assessment of wind energy potentiality at Kudat and Labuan, Malaysia using Weibull distribution function. Energy 2011;36(2):985–92.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–1204 1203

[10] Rehman S, Mahbub Alam AM, Meyer JP, Al-Hadhrami LM. Wind speed characteristics and resource assessment using Weibull Parameters. Int J Green Energy 2012;9:800–14.

[11] Ansari J, Madni IK, Bakhsh H. Saudi Arabian wind energy atlas. Riyadh, Saudi Arabia: KACST; 1986. p. 1–27.

[12] Alawaji SH, Eugenio NN, Elani UA. Wind energy resource assessment in Saudi Arabia. Part II: Data collection and analysis. Renew Energy 1996;9(4):818–21.

[13] Shaahid SM, Al-Hadhrami Luai M, Rahman MK. Potential of establishment of wind farms in western province of Saudi Arabia. Energy Procedia 2014;52:497–505.

[14] Prasad RD, Bansal RC, Sauturaga M. Some of the design and methodology considerations in wind resource assessment. IET Renew Power Gener 2009;3 (1):53–64.

[15] Fazelpour Farivar, Soltani Nima, Soltani, Sina, Rosen, Marc A. Assessment of wind energy potential and economics in the north-western Iranian cities of Tabriz and Ardabil. Renew Sustain Energy Rev 2015;45:87–99.

[16] Pishgar-Komleh SH, Keyhani A, Sefeedpari P. Wind speed and power density analysis based on Weibull and Rayleigh distributions (a case study: Firouz- kooh county of Iran). Renew Sustain Energy Rev 2015;42:313–22.

[17] Chandel SS, Ramasamy P, Murthy KSR. Wind power potential assessment of 12 locations in western Himalayan region of India. Renew Sustain Energy Rev 2015;39:530–45.

[18] Kose Faruk, Hilmi Aksoy Muharrem, Ozgoren Muammer. An assessment of wind energy potential to meet electricity demand and economic feasibility in Konya, Turkey. Int J Green Energy 2014;11(6):559–76.

[19] Ucar A, Balo F. Evaluation of wind energy potential and electricity generation at six locations in Turkey. Appl Energy 2009;86:1864–72.

[20] Jowder ALF. Wind power analysis and site matching of wind turbine generators in Kingdom of Bahrain. Appl Energy 2009;86:538–45.

[21] Fyrippis I, Axaopoulos JP, Panayiotou G. Wind energy potential assessment in Naxos Island Greece. Appl Energy 2010;87:577–86.

[22] Gao Xiaoxia, Yang Hongxing, Lu Lin. Study on offshore wind power potential and wind farm optimization in Hong Kong. Appl Energy 2014;88(5):1848–56.

[23] Onea Florin, Rusu Eugen. An evaluation of the wind energy in the north-west of the black sea. Int J Green Energy 2014;11(5):465–87.

[24] Eun Leea Myung, Kimb Gunwoo, Jeong Shin-Taek, Hui Koc Dong, Seok Kang Keum. Assessment of offshore wind energy at Younggwang in Korea. Renew Sustain Energy Rev 2013;21:131–41.

[25] Wu Jie, Wang Jianzhou, Chi Dezhong. Wind energy potential assessment for the site of Inner Mongolia in China. Renew Sustain Energy Rev 2013;21:215–28.

[26] Irwanto M, Gomesh N, Mamat MR, Yusoff YM. Assessment of wind power generation potential in Perlis, Malaysia. Renew Sustainable Energy Rev 2014;38:296–308.

[27] Chandel SS, Ramasamy P, Murthy KSR. Wind power potential assessment of 12 locations in western Himalayan region of India. Renew Sustain Energy Rev 2014;39:530–45.

[28] Togrul Inci Türk, Kizi Meerim Imas. Determination of wind energy potential and wind speed data in Bishkek, Kyrgyzstan. Int J Green Energy 2008;5:157–73.

[29] Farhan Khahro Shahnawaz, Tabbassum Kavita, Mahmood Soomro Amir, Liao Xiaozhong, Bux Alvi Muhammad, Dong Lei, Farhan Manzoor M. Techno- economical evaluation of wind energy potential and analysis of power generation from wind at Gharo, Sindh Pakistan. Renew Sustain Energy Rev 2014;35:460–74.

[30] AL-Yahyai Sultan, Charabi Yassine, Gastli Adel, Al-Alawi Saleh. Assessment of wind energy potential locations in Oman using data from existing weather stations. Renew Sustain Energy Rev 2010;14:1428–36.

[31] Ikilic Cumali. Wind energy and assessment of wind energy potential in Turkey. Renew Sustain Energy Rev 2012;16:1165–73.

[32] Himri Y, Rehman S, Draoui B, Himri S. Wind power potential assessment for three locations in Algeria. Renew Sustain Energy Rev 2008;12:2495–504.

[33] Alamdari P, Nematollahi O, Mirhosseini M. Assessment of wind energy in Iran: a review. Renew Sustain Energy Rev 2012;16:836–60.

[34] Shata Ahmed Ahmed. Potential wind power generation in South Egypt. Renew Sustainable Energy Rev 2012;16:1528–36.

[35] Ohunakin Olayinka S. Assessment of wind energy resources for electricity generation using WECS in North-Central region, Nigeria. Renew Sustain Energy Rev 2011;15:1968–76.

[36] Philippopoulos Kostas, Deligiorgi Despina, Karvounis George. Wind speed distribution modeling in the greater area of chania, Greece. Int J Green Energy 2012;9:174–93.

[37] Hernández-Escobedo Q, Saldaña-Flores R, Rodríguez-García ER, Manzano- Agugliaro F. Wind energy resource in Northern Mexico. Renew Sustain Energy Rev 2014;32:890–914.

[38] Raichle Brian W, Richard Carson W. Wind resource assessment of the South- ern Appalachian ridges in the Southeastern United States. Renew Sustain Energy Rev 2009;13:1104–10.

[39] Francisco González-Longatt Javier Serrano González, Payán Manuel Burgos, Riqueme Santos Jesús Manuel. Wind-resource atlas of Venezuela based on on- site anemometry observation. Renew Sustain Energy Rev 2014;39:898–911.

[40] Odo FC, Offiah SU, Ugwuoke PE. Weibull distribution-based model for prediction of wind potential in Enugu, Nigeria. Adv Appl Sci Res 2012;3 (2):1202–8.

[41] Windographer 3.2.3, 2014. Wind Resources Assessment Tool. ⟨http://www. mitsaya.com⟩.

M.A. Baseer et al. / Renewable and Sustainable Energy Reviews 52 (2015) 1193–12041204

  • Wind speed and power characteristics for Jubail industrial city, Saudi Arabia
    • Introduction
    • Site, equipment and data description
    • Results and discussion
      • Annual, seasonal and diurnal behaviour of mean wind speed
      • Weibull parameters and wind frequency analysis
      • Air density, wind power density (WPD), wind shear exponent (WSE)
      • Energy output analysis
    • Conclusions
    • Acknowledgement
    • References

Term Paper/Jubail Industrial city/Jubail Indestrial City.pdf