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Richter J. et al 1 STIR cities: Engaging energy systems design and planning in the context of urban sociotechnical imaginaries Authors: Jennifer A. Richter, School for the Future of Innovation in Society and the School of Social Transformation, Arizona State University, Tempe, USA 1 Abraham S.D. Tidwell, School for the Future of Innovation in Society, Arizona State University, Tempe, USA 2 Erik Fisher, School for the Future of Innovation in Society, Arizona State University, Tempe, Arizona, USA 3 Thaddeus R. Miller, Urban Studies and Planning, Portland State University, Portland, USA 4 Abstract: Since the first electrification systems were established in the United States between 1910 and 1930, energy systems governance at the municipal level has included competing visions for how engineering design and energy policymaking should foster particular social outcomes. Using Phoenix as a representative metropolitan area, and the cases of distributed generation and in-home power management devices as examples, this paper explores how the norms and values embedded in energy systems design and planning shape how residents experience change in the energy grid. Through these case studies, the authors argue that such “sociotechnical imaginaries” – collectively formed visions of social life related to science and technology development – are a crucial, yet overlooked, pathway for social science to engage in fostering socially reflexive mechanisms in energy development. To conclude, the authors outline a research program for applying socio-technical integration research (STIR) to developing socially reflexive capacities in municipal energy producing, regulating, and planning institutions. Such a program has the ability to produce a deeper intellectual understanding of how energy development occurs, and in doing so generate new pathways for fostering cultural and material changes in the structure of contemporary energy systems. The Phoenix metro area is located in an arid region of the American Southwest created by the Rio Salado (Salt River) basin that covers almost 2000 square miles. Phoenix is the largest city in the region, and the seat of Maricopa County, with a metropolitan population that exponentially increased from 331,770 in 1950 to 4,009,000 in 2015 (Theobald 2015). This incredible population surge was enabled by a political system that privileged the business and land-owning elite that dominated Arizona politics after World War II, and who were heavily focused on increasing economic growth by luring wealthy retirees and military-industrial complex 1 Corresponding author: Jennifer Richter. Address: PO Box 875603, Tempe, AZ 85287. Phone: 480-965-7682. Email: [email protected] 2 Address: PO Box 875603, Tempe, AZ 85287. Phone: 540-303-2579. Email: [email protected] 3 Address: PO Box 875603, Tempe, AZ 85287. Phone: 480-286-8767. Email: [email protected] 4 Address: PO Box 751-CUS, Portland, OR 97207. Phone: 503-725-4016. Email: [email protected]

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    STIR cities: Engaging energy systems design and planning in the context of urban sociotechnical imaginaries

    Authors:

    Jennifer A. Richter, School for the Future of Innovation in Society and the School of Social Transformation, Arizona State University, Tempe, USA1

    Abraham S.D. Tidwell, School for the Future of Innovation in Society, Arizona State University, Tempe, USA2

    Erik Fisher, School for the Future of Innovation in Society, Arizona State University, Tempe, Arizona, USA3

    Thaddeus R. Miller, Urban Studies and Planning, Portland State University, Portland, USA4

    Abstract: Since the first electrification systems were established in the United States between 1910 and 1930, energy systems governance at the municipal level has included competing visions for how engineering design and energy policymaking should foster particular social outcomes. Using Phoenix as a representative metropolitan area, and the cases of distributed generation and in-home power management devices as examples, this paper explores how the norms and values embedded in energy systems design and planning shape how residents experience change in the energy grid. Through these case studies, the authors argue that such “sociotechnical imaginaries” – collectively formed visions of social life related to science and technology development – are a crucial, yet overlooked, pathway for social science to engage in fostering socially reflexive mechanisms in energy development. To conclude, the authors outline a research program for applying socio-technical integration research (STIR) to developing socially reflexive capacities in municipal energy producing, regulating, and planning institutions. Such a program has the ability to produce a deeper intellectual understanding of how energy development occurs, and in doing so generate new pathways for fostering cultural and material changes in the structure of contemporary energy systems.

    The Phoenix metro area is located in an arid region of the American Southwest created by the

    Rio Salado (Salt River) basin that covers almost 2000 square miles. Phoenix is the largest city in

    the region, and the seat of Maricopa County, with a metropolitan population that exponentially

    increased from 331,770 in 1950 to 4,009,000 in 2015 (Theobald 2015). This incredible

    population surge was enabled by a political system that privileged the business and land-owning

    elite that dominated Arizona politics after World War II, and who were heavily focused on

    increasing economic growth by luring wealthy retirees and military-industrial complex                                                                                                                          1  Corresponding author: Jennifer Richter. Address: PO Box 875603, Tempe, AZ 85287. Phone: 480-965-7682. Email: [email protected]

    2  Address:  PO Box 875603, Tempe, AZ 85287. Phone: 540-303-2579. Email: [email protected]  3  Address:  PO Box 875603, Tempe, AZ 85287. Phone: 480-286-8767. Email: [email protected]  4  Address: PO Box 751-CUS, Portland, OR 97207. Phone: 503-725-4016. Email: [email protected]

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    corporations such as Motorola and General Dynamics (Needham 2014). Their values and beliefs

    shaped the growth of human activity in Phoenix, and the subsequent energy systems they created

    and supported, were instrumental to the economic activity that has supported the area. The

    culture of Phoenix as a place and as a destination was established during this time as a desert

    imaginary- a place where the new innovations and leisure of the modern age could

    simultaneously emerge, reclaiming the vast, “empty” and inhospitable wasteland of the Sonoran

    desert, transforming it into a productive and politically important region of the United States.

    However, future growth is now dependent on aging energy and water systems, typified

    by the Roosevelt Dam originally completed in 1911 to hold water from the Salt River for

    agricultural irrigation, and the Glen Canyon Dam built in the 1950’s to provide energy to move

    water to the Phoenix area, 200 miles south. Adjacent to Glen Canyon is the Navajo Generating

    Station, a coal-fire power plant built in the 1980’s on Navajo Nation land in the Four Corners

    area, also meant to feed the energy and water needs of the growing Phoenix metropolitan area.

    These mega projects rerouted rivers, created enormous artificial aquifers and established a

    pattern of energy production that took energy from far-away places and transmitted it to the

    metro area (Needham 2014).

    These water and energy systems, and how they configure the lives of residents of

    Phoenix today, are neither accidental nor a “natural” outcome of market activities. They are the

    products of particular visions – or “sociotechnical imaginaries” – of how science and technology

    should shape the orderly and beneficial development of society, visions that articulated endless

    economic growth based the ideas of American exceptionalism from the 1700’s stemming from

    bountiful natural resources (Smith and Marx 1994). This paper seeks to untangle two aspects of

    energy transitions in the American West: First, this paper describes how energy patterns in the

    region were established, using the Phoenix metro area as an exemplar of how these energy

    systems led to the establishment of a 4.5 million person city in a region with only 10 inches of

    rainfall per year. It is crucial to have a deeper understanding of the imaginaries that drove,

    shaped, and led to the implementation of and commitment to this system, in order to understand

    current controversies over how those energy systems should and must change to meet

    contemporary understandings of the ecological limitations of the region.

    Second, this paper will examine two case studies that illustrate competing energy values

    and goals for the Phoenix area. These cases are not unique to the city, but are representative of

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    battles underway throughout the United States over what kinds of values will shape and drive the

    next energy transition from fossil fuels to renewables. Using the examples of distributed

    generation of solar energy, and user-based systems of self-metering, we demonstrate how these

    are also intensely regional, local, and individual issues, reflecting diverse value systems from

    diverse stakeholders. It is critical to understand these approaches in order to comprehend why a

    shift to more flexible, less centralized energy systems is a controversial topic in the US.

    Furthermore, these cases are reflective not only of the infrastructural constraints posed by the

    design and operation of the current electrification grid, but also the importance of understanding

    the imaginaries that underlie energy systems development, in order to develop methodologies

    that can heighten awareness of these imaginaries in order to productively engage with their

    influence over design, policy, and operation.

    To address this final point, we will introduce a method for engaging with energy system

    designers and planners. This approach, called Socio-Technical Integration Research (STIR) has

    been used in laboratory settings in order to expand, change, or redirect research towards

    incorporating larger social value considerations as they emerge (Fisher and Schuurbiers, 2013;

    Flipse et al., 2013; Schuurbiers, 2011; Stilgoe et al. 2013). Our version, which we have dubbed

    STIR Cities, is a more comprehensive approach to understanding how a large sociotechnical

    system like energy production and distribution that drives the urban centers and agricultural

    systems of the American West is the product of specific goals and values by planners and

    practitioners (STIR Cities Project Description). Today, different values are at play in Phoenix,

    and we are witnessing a complex and unruly transition from fossil fuel-based energy sources to

    potentially more renewable and sustainable forms of energy that may lead to more resilient

    communities, but will certainly change the relationship between energy consumer, energy

    producer, and the urban public institutions such as planning offices and universities engaged in

    the transformation of Phoenix. This is especially important for the American Southwest, which

    was “discovered” by European explorers and settlers during an unusually wet period for the

    Southwest (Steinberg, 2009). Today, the West has reverted to a more arid state, and the forecast

    for the next century due to changing climate patterns is for much more intense periods of aridity

    punctured by intense weather events that will strain these aging energy systems, even as

    populations continue to grow (Ye and Grimm 2013, Cayan et al 2010, Reisner 1986). Therefore,

    STIR Cities can be a useful tool for understanding the scope and influence of different

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    viewpoints, and then integrating those concerns before technologies, systems, procedures—and

    the expert performances that produce and reproduce them—are fully designed and implemented

    on larger scales. In doing so, our paper answers the call by scholars of the social dimensions of

    energy systems to recognize (1) the contingent nature of our current energy systems, and (2) to

    direct energy systems scholarship towards explicating the values and assumptions that underlie

    these large technoscientific projects (Miller, Richter, & O’Leary 2015; Sovacool and Brown

    2015). If energy systems are, as these scholars argue, always in a process of making and

    unmaking, engaging directly with those parties who have articulated the visions of paradise in

    the desert that underlie Phoenix has the potential to catalyze the kind of reflective thinking that

    could transform energy systems design and planning, as well as the energy systems themselves.

    Energy systems and sociotechnical imaginaries in the United States

    Energy is, as the physicist Richard Feynman remarked once, a “very subtle concept” (Feynman

    2011[1969]). As a scientific concept, it exists in a socially-inflected space where, at least since

    the late 19th century, it has informed everything from patterns of industrial operations to daily

    human behavior (Rabinbach 1991; Smith 1998). Yet it is more than a social concept, for patterns

    of energy production and consumption are “realized through artefacts and infrastructures that

    constitute and that are in turn woven into bundles and complexes of social practice” (Shove and

    Walker 2014, 42; Laird 2013). Human societies materialize energy, and in doing so, articulate

    the kinds of worlds they imagine are necessary and “good” for the polity writ large.

    The history of energy in the United States demonstrates this point – the rise of coal as a

    major source of energy for Americans required the construction of a multitude of technologies

    and new ways of conceptualizing what “consuming” energy looked like. Christopher Jones’

    (2015) study of energy infrastructures in the mid-Atlantic region shows that anthracite, the hard

    coal synonymous with Pennsylvanian coal production, only rose in prominence through the co-

    production of systems of moving resources and a population that saw coal as the qualitatively

    and quantitatively “better” source of heating. Similarly, other studies of electrification in the 20th

    century emphasize that at the outset of electrification, shifting energy production and

    consumption patterns on a larger scale would require enrolling the populace in a process of

    imagining different forms of life and livelihood, facilitated by new energy sources (Hughes,

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    1982; Nye 1990). This is true not only of the Eastern part of the US, but also in the West, where

    the Colorado Plateau became a central nexus of energy production due to its expansive coal

    mines, and subsequent construction of coal-fire power plants such as the Navajo, Mojave, and

    Four Corners Generation Stations that were constructed after WWII (Needham 2014).

    These processes were neither inclusive nor universally positive – like all other technological

    systems, energy systems are politics by infrastructural means, and choices of design are equally

    choices of who can participate in a new energy system, where capital will flow and, importantly

    for justice considerations, who will receive the energy produced and who will bear the negative

    effects of energy production (see Mitchell 2011). Much of this energy infrastructure work

    continues to occur within the hands of a few small groups in societies: utility engineers and

    managers, regulatory bodies, city planners, and energy technology corporations. Energy systems

    design has, and continues to be, a process of these groups (amongst others) articulating

    “collectively imagined forms of social life and order” (Jasanoff and Kim 2009, 120), or

    “sociotechnical imaginaries” as to what the grid should do and, importantly, how energy

    producer and energy consumer are networked together. These imaginaries inflect planning and

    design choices, choices that are materialized in systems and, in the case of Phoenix, are coded as

    necessary for large-scale human habitation of the northern Sonoran. Sociotechnical imaginaries

    bring to bear an element much of the larger body of research on energy and society have failed to

    do – the “integrated material, moral, and social landscapes” (Jasanoff and Kim 2015, emphasis

    added) that underlie how these aforementioned experts materialize our “energetic” world.1

    The ideal American lifestyle of the mid-20th century, depicted through the objects of an

    electrified and energetic culture, was built on this cultural history of electrification and

    transformation of the home, community, and region writ large (Cowan 1983). However, in an

    America suffused with discourses of economic security, national security, security of the free

    world, and security of the home, energy development and the productivity of the American

    people through energy became a moral necessity of national development (Tidwell and Smith

    2015). The Southwestern U.S. exemplifies this pattern, where the ideal of a converting a desert

    “wasteland” into a productive and useful part of the nation fueled the drive to divert water to

    agricultural purposes and eventually for energy as well (Reisner 1986, Wilshire, Nielson and

    Hazlett 2008). By the 1950’s, military installations and the post-WWII baby boom, coupled with

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    cheap housing and cheaper electricity provided by the dams and coal plants of the West, the

    American Southwest was one of the fastest growing areas of the nation.

    These energy systems were, and still in many ways are, predicated on a pattern typified

    by the displacement of environmental burdens related to energy production on to marginalized

    communities in order to supply urban centers with plentiful energy and water. This was an

    approach developed in an era (1940’s- 1960’s) that took advantage of lax environmental

    regulations, little local opposition, low population density, racially prejudiced land policies, and

    arid geographies to convert lands that were characterized as empty, desolate, and useless into

    productive resources (Needham 2014; Kuletz 1998). For instance, the above-mentioned energy

    plants place a disproportionate burden of air and water pollution on members of the Navajo

    Nation living near these plants, even as they provide an economic engine for some members of

    the Navajo community (Needham 2010, Necefer et al 2015), though only about 30% of residents

    on the Navajo Nation have access to electricity (Landry 2015). Yet, as we have outlined earlier,

    not all of these elements of those visions of the future that underlie Phoenix’s development

    continue to play a direct role. Understanding how to address the intersections between what

    imaginaries built the electrification grid Phoenicians inhabit, and those currently driving the

    development of grid transformations, requires first grounding these larger histories within the

    context of material systems that residents encounter on a daily basis.

    The following case studies illustrate two examples of the variety of energy system

    technologies and controversies encountered in Phoenix today. They are sites of contestation over

    not only the future of energy in the West, but also over what ideologies and values will drive

    future energy transitions, including what kinds of sources will be used to produce energy in the

    future, how centralized or dispersed energy production and consumption will be, and who will

    control energy production and how it will be used. These examples show the complexity of

    energy systems, and the different values embedded in those systems. By tracing the values

    expressed in these systems, including who the major drivers are and how they articulate specific

    ideas related to energy-based sociotechnical imaginaries, it becomes clear that struggles over

    energy system transformation in the Phoenix metro area are not only about electricity, but also

    about making the future of electricity production in the Valley mesh with the social, political,

    and cultural values of different kinds of producers and consumers. These examples are

    necessarily intertwined and overlapping, and provide insight into the ways that the norms of

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    growth and modernity through electrification, municipality-utility relations, infrastructural lock-

    in, and the desert landscape itself order the ways in which Phoenicians design, encounter, and

    interact with energy in the “Valley of the Sun.”

    Utilities and energy production: Arizona Public Service, Salt River Project, and distributed

    generation in Phoenix

    The two major utilities in Phoenix are Salt River Project (SRP) and Arizona Public Service

    (APS). While they are both major providers of electricity and leaders in solar energy

    development, their historical models are vastly different and reflect back on how they currently

    engage with consumers and the various municipal and state level agencies engaged in energy

    development. Early residents of modern Phoenix developed a series of ditches and canals,

    partially drawing on those still visibly left by the Hohokam people during the 1100’s, but mostly

    constructing their own, to irrigate crop fields, provide water for the townspeople, and partially to

    provide rudimentary sewage (Ross 2011). These canals, rudimentary at best, were supplemented

    by a series of wells throughout the city, the majority of which were in private hands until the 20th

    century. The Salt River Valley Water Users Association (SRVWUA), the first segment of SRP’s

    business, stems from a similar response by landowners on the eastern edge of the valley to

    develop the reservoirs necessary to sustain year round agriculture. Funded through the National

    Reclamation Act of 1902, the Roosevelt Dam would begin a series of events marking the

    longstanding relationship between municipal Phoenix as a water purchaser and the SRVWUA as

    a key provider (Kupel 2003, 80). As an organization, it was ostensibly owned by the landowners

    it served, but due to the land-ownership centric structure of the leadership election system (a vote

    per acre), was dominated by a handful of large landowners in the east valley. The SRVWUA at

    this stage was not a power provider; Phoenix had relied, since prior to incorporation, on a

    municipal provider of electricity and fuels, including the power produced from the initial

    hydroelectric generators installed on Roosevelt Dam, the Central Arizona Light and Power

    Company (CALAPCO). By the 1920s both companies were building competing grids in the

    valley; under arrangement the two companies agreed to split the valley – with CALAPCO taking

    downtown Phoenix and the north and west valleys and SRVWUA most of Tempe and all of the

    south and east valleys (Needham 2014, 39).

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    By 1936, the State of Arizona restructured the legal boundaries of agricultural projects

    like the SRVWUA, and a second company – the second half of today’s SRP – the Salt River

    Project Agricultural Improvement and Power District was formed (SRP 2015a; ibid). Today

    these two divisions operate as a seamless single organization, SRP. CALAPCO would go

    through a number of mergers and acquisitions before emerging in the 1950s as Arizona Public

    Service. SRP’s status as a state-owned utility and part of the State of Arizona means that unlike

    APS (which is a publically traded company) it has no responsibility to adhere to the rulings of

    the state’s utility regulatory board, the Arizona Corporation Commission (ACC). However, it is

    generally understood by energy professionals in the valley that SRP will, unless mandated to do

    otherwise by the state legislature (to which it is directly responsible), follow the rulings of the

    ACC. This byzantine set of relationship between SRP, APS, ACC and the state legislature are

    crucial for framing the relations of energy systems technologist, business professionals, and

    policymakers that underlie the current controversies over distributed generation.

    Controversies over net metering are an instructive and illuminating example of a complex

    sociotechnical system relating to solar energy, illustrating the gulf between public

    understandings of energy production and those of utilities. For the members of the public, net

    metering (NEM) policies—which credit solar energy system owners for the electricity they send

    back to the grid—offered by APS were an attractive incentive for investing personal funds into

    solar photovoltaic (PV) units. While several versions of an NEM policy had been in play since

    1993, the current version was passed in 2008 and has been controversial. Distributed generation

    PV systems also became more popular due to favorable credits offered by the federal

    government, which offered a 30% tax credit for renewable energy systems and efficiency

    measures on private residences passed as part of the American Recovery and Reinvestment Act

    of 2009. The ACC also passed a renewable portfolio standard (RPS) in 2006, which set a state

    standard that 15% of energy produced in the state must come from renewable resources by 2025,

    with 15% of that energy coming from renewable energy credits (REC), and 30% provided by

    distributed generation, and half of that distributed generation from residential solar units (SEIA

    2013).

    Both SRP and APS have struggled with containing the effects of increased numbers of

    customers who were promised net metering when they installed distributed generation units on

    their residences. In 2013, APS, sought permission from the ACC to cancel the NEM program

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    that had led to spike in distributed generation (DG), or rooftop solar, installations over the

    previous decade. APS argued that the increase in solar customers had led to a “cost shift” from

    DG customers to non-solar customers. Without an increase in fees to solar customers to offset

    their net metering, APS argued that non-solar customers would have to shoulder more of the

    costs of grid maintenance. In order to eliminate this cost shift, the average bill for a solar

    customer would therefore increase an average of $50-100 per month, negating the economic

    advantage of installing a rooftop solar system. In 2013, APS requested that the ACC allow APS

    to impose a fee on solar customers, in addition to eliminating net metering. During this time,

    APS provided money to an anti-solar non-profit group that produced and ran television

    commercials that portrayed solar customers as exploiting the grid to their own benefit and at the

    expense of other non-solar customers (Trabish 2013). APS, along with its parent company

    Pinnacle West, also lobbied heavily for two anti-solar candidates for the ACC, leading to

    accusations of collusion between the ACC and APS and questions of whether a regulated

    monopoly should be funding the campaigns of candidates for the board that is meant to regulate

    them (Purcell, Chediak, and Newkirk 2015). The ACC agreed to a $0.70/kW fee, which

    averaged to about $5 per customer per month (Energy Policy Innovation Council (EPIC) 2013).

    But the ACC did not allow for APS’ original request that would have amounted to about $50 per

    solar customer. SRP is in a similar situation, though it is not regulated by the ACC, which

    allowed the utility to pass its own rate increase for distributed generation customers in 2015,

    raising their rates to about $50-$100 monthly per solar customer (Randazzo 2015a). Also in

    2015, the ACC is reviewing the case for a rate increase for APS’ solar customers again, causing

    more uncertainty and doubt regarding the future of distributed roof top generation in Arizona.

    Public groups, such as Tell Utilities Solar Won’t Be Killed (TUSK) and Chispa, a pro-solar

    group that focused on access to solar energy for Hispanics in Phoenix, as well as hundreds of

    solar customers who attended public meetings held by APS and SRP to protest these rate

    changes, argue that DG requires a substantial investment by residential customers, the energy

    produced is distributed to other customers, and they have the right to produce energy

    independently and individually. In other words, in their view, utilities do not have to be the sole

    distributers of electricity in the Valley, and energy is inherently an issue of justice in terms of

    distribution, not merely one of economics or technological systems. In these scenarios, DG is a

    site of contestation over the social as well as the economic value of solar energy.

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    Controversies over NEM exemplify shifting roles for both utilities and consumers of

    electricity. The crux of these issues is how to accurately and legitimately account for different

    ways of valuing energy. DG customers no longer see themselves solely as consumers, but rather

    as producers of energy. As such, utilities can take advantage of the electricity produced by DG

    systems to supplant electricity that would have come from another natural gas or coal plant,

    negating the need to construct more centralized plants. Another issue with NEM rate changes is

    that the method that utilities use to value DG solar is limited to narrow economic measures that

    are based on the centralized role of utilities in producing energy. While this is true today, in the

    future, the production of energy may become less centralized due to DG. Solar installations

    companies and DG producers are challenging the utilities’ narrow valuation of DG, arguing that

    the benefits of DG are being ignored because they don’t mesh with the traditional production

    cycle of utility-distributed energy. Meanwhile, utilities are trying to incorporate solar generation

    in a manner that works with the existing grid in a predictable manner that is reliable. As Frank

    Laird has noted, “Energy policy advocates are motivated by the meanings they attach to the

    technologies they advocate” (2001: 5) and in these scenarios, energy can be seen as an inherently

    sociotechnical system. Incorporating a plurality of values into this system is a key component of

    recognizing the social aspects of energy production. How that will be done in a fair and

    equitable manner that recognizes new energy systems and components, as well as new

    consumers and producers, is a central energy challenge Arizona is facing today.

    Salt River Project’s M-Power®: In-home device energy monitoring technologies

    A perpetual challenge utilities face in daily business operations is dealing with customers who

    fail to pay their bills. These arrears become both a burden for the utility, sometimes mounting

    into the millions of dollars. Should a utility not be able to address the cost, it may seek to transfer

    this cost to its wider customer base. SRP, as a quasi-state owned utility, is in a particularly

    challenging position here, as it exists neither as a clearly identified “private” enterprise (such as

    APS), nor as a trust of the entire state’s populace (due to the voting system under which it

    operates). At a macro-level, this conundrum pertains to the role of these semi-monopolistic

    enterprises in a democratic (and ostensibly liberal economic) society. From the perspective of

    sociotechnical imaginaries, however, attempts to answer such questions should be grounded in

  • Richter J. et al

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    institutionalized understandings of the common good and the local performances of these

    understandings on the part of expert organizations and practitioners. Rather than starting with

    normative questions such as what energy policies and technological designs are best, we seek to

    understand how such questions are already being answered by the institutional arrangements and

    expert performances; how has SRP, for example, designed electrical distribution and

    consumption systems, and what do these systems say about how SRP sees its role as a policy-

    through-technology making agent in the valley. M-Power®, SRP’s pay-as-you-go billing

    program, provides a constructive window through which to explore these questions of energy

    systems design and society. M-Power® was one of the earliest attempts by a major utility to alter

    the producer-consumer relationship from one of monthly bills and utility readers to a system

    where, as they claim, the consumer is now empowered to control their electricity consumption

    (Salt River Project 2013).

    In 1993, the Arizona Legislature mandated that SRP develop a system for assisting low-

    income households with lowering energy consumption and meeting payments (Neenan and

    Robinson 2010). The system they devised was a pay-as-you-go process, coupling a specifically

    designed meter and user display terminal (UDT). M-Power® is not “smart” in the sense that it

    facilitates a two way process of communications between the utility and the consumer – rather,

    the meter transmits consumption information to the UDT which then accounts for the cost of

    power based on the time of year (M-Power® uses a two-tiered flat rate system) and deducts it

    from the money uploaded to the UDT. Money is added to the UDT via a “smart card” – these

    cards must be taken to a SRP pay station (located in grocery stores, gas stations, and SRP

    offices) and loaded with money (via check or cash) beforehand. Since the inception of this

    program, the M-Power® system has expanded from 100 low-income homes to being available

    throughout the SRP service area. SRP argues that such systems offer a lower upfront cost

    alternative for customers, allow those who cannot pay a large lump sum at the end of the month

    to continue paying their bills as money becomes available, and helps customers understand their

    energy consumption patterns.

    Despite these purported advantages, and the high customer satisfaction numbers SRP

    reports, a number of systemic sociotechnical patterns remain attached to M-Power®. First

    amongst these is the claim made that M-Power® targets low-income customers. Regardless of

    the intentioned actions of SRP, the design of the system has produced outcomes where, as

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    reported in the Electric Power Research Institutes’ 2010 report, the majority of customers make

    less than $30,000 a year and are predominantly Hispanic and African American (Neenan and

    Robinson 2010, 4-6). A second pattern pertains to the movement of knowledge of energy

    consumption between the consumer and producer. With the larger push amongst technologists

    and policymakers towards the transformation of current electrical grids into highly responsive,

    multi-directional communication systems (the “smart grid”), SRP has presented M-Power® as a

    demand-side response tool. It is important to distinguish the concept of “demand-side response”

    from the cost-cutting measures the Arizona legislature outlined in 1993; “demand-side response”

    indicates a system of clear knowledge transfer between the utility and the consumer of how

    much electricity they are using and, importantly, in such a way that it enables the consumer to

    respond accordingly. The Arizona Community Action Association has argued this rhetorical

    presentation of M-Power® as enabling conservation, arguing that for low-income residents

    conserving electricity is not a salient issue given their capital constraints (Howat and

    McLaughlin 2012, 10).2 A quick overview of how the UDT presents information to users appears

    to add some credence to this claim; the meter provides basic information pertaining to energy

    consumption for the current day and month (in kWh), how much money from the pre-payment is

    left, and how much money has been spent during the current day (Salt River Project 2013b). For

    comparison, a SRP smart meter customer can access, via their MyAccount internet-based bill

    payment system, daily consumption patterns and longer-term (days to months) trends in their

    consumption; an M-Power® customer would have to manually record and graph this information

    to acquire the same knowledge (Salt River Project 2014a).

    A final pattern is the purposeful design of meters that, should money run out, are

    designed to shut off power to a home. These features, meant to limit arrears generated from

    households where bills are no longer being paid, do not simply turn off power at any time;

    “Friendly Credit” periods exist in the evenings and on weekends when it may not be possible for

    customers to gather the money or transportation necessary to reach a SRP Pay Station (Salt River

    Project 2014b). Consumer advocacy groups have spoken out against such design features,

    arguing they unfairly target the poor, the elderly, and families with children (NCLC report), and

    SRP has developed exceptions for some of these groups, though at-risk group customers are not

    mandated to opt out (Howat and McLaughlin 2012).3 While such exceptions may address

    programmatic concerns, such social groups pose broader challenges to SRP that require technical

  • Richter J. et al

    13  

    expertise to respond to public values, as evident in the following response from SRP’s former

    customer service manager (Association for Demand Response & Smart Grid 2012, 9):

    “There is a belief out there that the utility is the last bastion of easy credit for low-income customers and that we should do everything we can to keep the power on” says Mike Lowe. “We have done a number of things to help with that. If you get disconnected, you have the option to go on prepay and pay off your arrearage over time.”

    Constructed in this fashion, SRP seeks to operate like any other private enterprise and must

    design its policies to protect its bottom line—despite playing a major role in constituting the

    metropolis of Phoenix (certainly the city would not exist as it does today); at the same time, as a

    state subsidiary, it is obligated to be responsive to the political imaginaries that constitute the

    state of Arizona.

    These three patterns of design—one pertaining to the relationship between the M-

    Power® system uptake and consumer identity, the second outlining the patterns of knowledge of

    electricity consumption uptake, and finally the temporal and capital dynamics of a pay-as-you-go

    design—elucidate the power of infrastructural systems to pattern lived experience (Edwards

    2004). This should not be taken as a critique of intention – infrastructural sociotechnical systems

    such as the electrical grid are built with a variety of norms and values embedded within them and

    exhibited through the execution of technological design. Yet they reflect, in many ways, the

    ambiguous relationship between the Phoenix polity and the institutions they ostensibly have

    input in operating. Exploring cases such as M-Power® and distributed generation, how Phoenix

    energy systems design relates to these underlying sociotechnical imaginaries of transforming the

    desert through power, and how current “smart grid” developments inflect design and policy

    choices (Slayton 2013), is a crucial step towards asking the larger question of what kind of

    energy systems do we want in our urban environments and the American Southwest writ large.

    STIR Cities seeks, through the recognition of such patterns of human behavior linked to

    technological design of grids, to engage productively in the design process through facilitating

    the identification and reflection on these norms and values. More concretely, insofar as patterns

    such as these point to the ways in which formal and technical systems are informed by

    understandings of the common good, they represent for STIR Cities potential sites of social

  • Richter J. et al

    14  

    scientific engagement with civic, expert and organizational performances of sociotechnical

    imaginaries.

    Transforming energy systems through socio-technical integrative research

    Socio-technical Integrative Research (STIR) provides a method for technical experts such as

    energy system designers and engineers to consciously recognize how their values, ideas, and

    interpretations become embedded in the technologies and systems that shape our collective lives

    (Schuurbiers and Fisher, 2009: Fisher and Schuurbiers, 2013). The larger body of socio-technical

    integration research emphasizes the potentially expansive and responsive relations of experts and

    their technical practices to the larger social and cultural context(s) in which they reside. STIR

    accounts for the boundary dynamics between experts (hitherto, primarily laboratory research

    scientists) and how such societal divides are constructed; its methods emphasize “close

    proximity” and engagement with immediate activities in order to document and understand the

    possibility and utility of “practical transformation” in the everyday practices of such experts vis-

    à-vis their social context(s) (Fisher et al. 2015, 41-2). STIR builds on the larger body of

    laboratory studies, studies of expertise in the field of Science and Technology Studies (STS), the

    policy sciences, and John Dewey’s theory of inquiry in an effort to “inform institutional design

    aimed at increased responsiveness of expert practices to broader sets of social values by

    specifying the conditions that enable and constrain such responsiveness” (STIR Cities Project

    Description). Previous STIR studies have accomplished this through collaborative description

    and inquiry between research scientists and “embedded humanists.” The latter employ a decision

    protocol in order to open up reflection and deliberation within the discursive and material spaces

    of laboratory practices (Fisher 2007). The results of collaborative inquiry are analyzed using a

    framework for “midstream modulation,” which pertains to the modification of ongoing research

    and development processes by means of fostering greater reflexivity towards societal contexts,

    and in doing so fostering reflexive and responsible innovation (Fisher, Mahajan, and Mitcham

    2006, 492; Owen Macnaghten and Stilgoe 2012).

    The context of large-scale energy systems development, however, will require several

    adaptations to STIR methodology. As other STS researchers have pointed out, outcomes for

    enhancing reflexivity amongst technical experts depend on (1) identifying and justifying sites as

  • Richter J. et al

    15  

    the appropriate locations for fostering change in the larger network of activities (in this case,

    urban energy development), and (2) a recognition of where these sites sit within the larger forces

    at play (e.g., national energy development, urban non-energy related development) (Wynne

    2011). STIR Cities will explicitly capture these questions, both in terms of how the study will be

    carried out and in terms of how we will modify current STIR protocols and practices to account

    for the alternative knowledge systems that underlie the production of smart grid technologies,

    policies, and practices. STIR Cities consists of a three-year, two city, multi-site study that seeks

    to answer the following questions:

    (1) How and why are smart energy systems being developed and deployed in urban centers? (Year One)

    (2) How are they imagined to meet and create desirable forms of social and technological order? (Years One and Two)

    (3) To what extent do engagements with diverse technical experts across these systems foster reflexive learning and deliberation over broader emerging alternative forms of social and technological order, and ultimately inform expert practices and technological design choices? (Years Two and Three)

    Previous STIR projects embedded humanists in engineering and science laboratories for (often

    comparative and sequential) 12-week studies. STIR Cities’ multi-sited approach, however, and

    its focus on longer-term outcomes suggest that our engagements should occur not over 12 weeks

    and sequentially, but over 12 months and simultaneously. To date, STIR studies have not

    consistently employed a post-program evaluation phase to document whether social science

    engagement continues to foster reflexive expert practices and the alignment of innovation goals

    and societal concerns. Year One of STIR Cities will thus focus on capturing historical,

    documentary, and ethnographic evidence on the underlying imaginaries that inform the everyday

    practices of technical experts engaged in urban smart grid development. Ethnographic data

    collection will also serve to inform how the STIR protocol should alter to address the differing

    social and cultural dynamics of the energy policy and development space. It is our expectation

    that actors in this space, unlike scientists in academic laboratory settings alone, will express more

    reflexivity towards the societal outcomes of their work. Capturing where these cognitive

    boundaries exist and are performed by actors will be crucial for reflexive engagement in Year

    Two, as will the empirical documentation of changes in reflexive learning, value deliberation and

  • Richter J. et al

    16  

    practical adjustments during the active engagements. Year Three will address the question of

    longer-term, post-study evaluation, and empirically examine how experts may continue to

    change their practices as well as their more general performances of sociotechnical imaginaries

    and recognition of societal values related to smart grid development.

    In Phoenix, sites of engagement were evaluated based on their larger influence on the

    network of development around smart grid technologies. The initial list included, but was not

    limited to: city planning offices (City of Phoenix, City of Tempe, City of Chandler, for example),

    utility smart grid program management offices (APS and SRP); the Arizona Corporation

    Commission (AZCC); individual power plants (such as the Palo Verde Nuclear Generating

    Station, or the Ocotillo power plant); and local university engineering research groups engaged

    in locally or nationally-funded smart grid projects.4 These sites played a role in previous smart

    grid developments, and in turn are appropriate locations to document and engage with the

    performances of experts who have already had a material impact on the lives of citizens via

    energy system technologies. For example, low-income family smart energy programs (such as

    M-Power®) have included such varying actors as the City of Phoenix Public Works office,

    Arizona State University’s Global Institute of Sustainability, SRP, APS, and the Arizona State

    Legislature (Dalrymple 2014; Neenan and Robinson 2010).

    Mapping the network of relations that underlie smart grid development in an urban

    setting, and using this space to target key sites for productive embedded engagement with

    technical experts, will serve not only to make explicit and visible in everyday experience the

    performances that underlie how we conceptualize our energy-centric society, but in doing so

    foster a space for reflexive engagement towards altering practices to incorporate the societal

    concerns outlined in the case studies above. Energy systems designs and social outcomes are not

    inevitable; they are the product of a cultural history of energy producing, transporting, and

    consuming infrastructures, embedded in a system of social norms and values and developed by

    experts who only ever see a part of the very systems they work with daily. Productive and

    reflexive engagement, such as is the objective with STIR Cities, has the potential to inflect not

    only the devices and systems Phoenicians encounter, but also how they experience the meaning

    and materiality of these systems as a matter of their daily lives.

    Funding:

  • Richter J. et al

    17  

    This material is based upon work supported by the National Science Foundation under Grant No. 1535120.

    Notes:

    1. The exception to this is the work on social movements – as Hess (2015) points out, there are many synergies

    between Social Movement Studies (SMS) and Sociotechnical Imaginaries. We agree with his emphasis on

    tracing the social position and power dynamics underlying the production of imaginaries, and will address

    this element in more depth during subsequent STIR Cities studies.

    2. Studies since the first Oil Crisis in the 1970s also indicate that lower income families in urban areas tend to

    be the first to cut their energy consumption when prices rise, indicating that these individuals and families are

    conscious energy consumers, albeit unwillingly (see Unseld, Morrison, Sils and Wolf 1979).

    3. These exceptions, however, do not apply to multiple renters splitting a bill via M-Power® - as a 2015 Arizona

    Republic article showed (Randazzo 2015b). The lack of an explicit mechanism for addressing these split-bill

    outcomes is peculiar, given M-Power® explicitly targets students and other non-related multi-person renters

    for the program.

    4. For the purposes of anonymity this list is comprised of high-level organizational examples of potential sites,

    as opposed to the specific sites our study will include.

    References

    Cayan, Daniel R., Tapash Das, David W. Pierce, Timp P. Barentt, Mary Tyree, and Alexander Gershunov. 2010. “Future Dryness in the Southwest US and the Hydrology of the Early 21st Century Drought.” PNAS 107 (50): 21271-21276. DOI:10.1073/pnas.0912391107.

    Cowan, Ruth Schwartz. 1983. More Work for Mother: The Ironies of Household Technology from the Open Hearth to the Microwave. New York, NY: Basic Books.

    Dalrymple, Mick. 2014. Energize Phoenix Year Three Report. Phoenix, AZ: Arizona State University.

    Edwards, Paul. 2004. “Infrastructure and Modernity: Force, Time, and Social Organization in the History of Sociotechnical Systems.” In Modernity and Technology, edited by T. J. Misa, P. Brey and A. Feenberg. Cambridge, MA: The MIT Press.

    Feynman, Richard. 2011 [1969]. “What is Science.” Resonance 16 (9):860-873.

    Fisher, E. (2007). Ethnographic Invention: Probing the Capacity of Laboratory Decisions. NanoEthics 1 (2): 155-165. DOI: 10.1007/s11569-007-0016-5

    Fisher, Erik, Roop L. Mahajan, and Carl Mitcham. 2006. “Midstream Modulation of Technology: Governance From Within.” Bulletin of Science, Technology & Society 26 (6): 485-496. DOI: 10.1177/0270467606295402.

  • Richter J. et al

    18  

    Fisher, Erik, Michael O'Rourke, Robert Evans, Eric B. Kennedy, Michael E. Gorman, and Thomas P. Seager. 2015. “Mapping the Integrative Field: Taking Stock of Socio-technical Collaborations.” Journal of Responsible Innovation 2 (1): 39-61. DOI:10.1080/23299460.2014.1001671.

    Fisher, E., & Schuurbiers, D. 2013. “Socio-technical Integration Research: Collaborative Inquiry at the Midstream of Research and Development.” In Early Engagement and New Technologies: Opening Up the Laboratory (pp. 97-110). Springer Netherlands.

    Flipse, S. M., van der Sanden, M. C., & Osseweijer, P. (2013). “Midstream Modulation in Biotechnology Industry: Redefining What Is ‘Part of the Job’ of Researchers in Industry.” Science and Engineering Ethics, 19(3), 1141-1164. DOI: 10.1007/s11948-012-9411-6.

    Hess, David J. 2015. “Publics as Threats? Integrating Science and Technology Studies and Social Movement Studies.” Science as Culture 24 (1): 69-82. DOI:10.1080/09505431.2014.986319

    Howat, John, and Jillian McLaughlin. 2012. Rethinking Prepaid Utlity Service: Customers at Risk. Boston, MA: National Consumer Law Center.

    Hughes, Thomas P. 1993 [1983]. Networks of Power: Electrification in Western Society: 1880-1930. The Johns Hopkins University Press: Baltimore, MD.

    Jasanoff, Sheila, and Sang-Hyun Kim. 2009. “Containing the Atom: Sociotechnical Imaginaries and Nuclear Power in the United States and South Korea.” Minerva 47 (2):119-146.

    DOI:10.1007/s11024-009-9124-4. Jasanoff, Sheila, and Sang-Hyun Kim, eds. 2015. Dreamscapes of Modernity: Sociotechnical Imaginaries and the Fabrication of Power. Chicago: University of Chicago Press. In press. Jones, Christopher F. 2014. Routes of Power: Energy and Modern America. Cambridge, MA:

    Harvard University Press.

    Kuletz, Valerie L. 1998. The Tainted Desert: Environmental Ruin in the American West. New York, NY; London, UK: Routledge.

    Kupel, Douglas E. 2003. Fuel For Growth: Water and Arizona's Urban Environment. Tucson: The University of Arizona Press.

    Landry, Alysa. 2015. “Not alone in the dark: Navajo Nation’s lack of electricity problem.” Indian Country Today, February 22. http://indiancountrytodaymedianetwork.com/2015/02/11/not-alone-dark-navajo-nations-lack-electricity-problem-159135

    Laird, Frank N. 2013. “Against Transitions? Uncovering Conflicts in Changing Energy Systems.” Science and Culture 22 (2): 149-156. DOI: 10.1080/09505431.2013.786992.

  • Richter J. et al

    19  

    ---------2001. Solar Energy, Technology Policy, and Institutional Values. New York: Cambridge University Press.

    Miller, Clark A., Jennifer Richter, and Jason O’Leary. 2015. “Socio-energy systems design: A policy framework for energy transitions.” Energy Research & Social Science 6 (March 2015): 29-40.

    Mitchell, Timothy. 2011. Carbon Democracy: Political Power in the Age of Oil. New York, NY: Verso.

    Necefer, Len, Gabrielle Wong-Parodi, Paulina Jaramillo, and Mitchell J. Small. 2015. “Energy Development and the Native Americans: Values and Beliefs About Energy from the Navajo Nation.” Energy Research & Social Science 7: 1-11. DOI:10.1016/j.erss.2015.02.007.

    Needham, Andrew. 2014. Power Lines: Phoenix and the Making of the Modern Southwest. Princeton, NJ: Princeton University Press.

    Needham, Andrew. 2010. “’A Piece of the Action’: Navajo Nationalism, Energy Development, and Metropolitan Inequality.” In Indians and Energy: Exploitation and Opportunity in the American Southwest. Santa Fe: School for Advanced Research.

    Neenan, B., and J. Robinson. 2010. Paying Upfront: A Review of Salt River Project’s M-Power Prepaid Program. Palo Alto, CA: Electric Power Research Institute (EPRI).

    Nye, David E. 1990. Electrifying America: Social Meanings of a New Technology, 1880-1940. Cambridge, MA: The MIT Press.

    Owen, Richard, Phil Macnaghten, and Jack Stilgoe. 2012. “Responsible Research and Innovation: From Science in Society to Science for Society, With Society.” Science and Public Policy 39 (6): 751-760. DOI: 10.1093/scipol/scs093.

    Purcell, David, Mark Chediak, and Margaret Newkirk. 2015. “Shareholders Revolt Against Dark Money.” Bloomberg, May 14. http://www.bloomberg.com/politics/articles/2015-05-14/shareholders-revolt-against-dark-money.

    Rabinbach, Anson. 1990. The Human Motor: Energy, Fatigue, and the Origins of Modernity. New York: Basic Books.

    Randazzo, Ryan. 2015a. SRP board Oks rate hike, new fees for solar customers. Arizona Republic, February 26. http://www.azcentral.com/story/money/business/2015/02/26/srp-board-oks-rate-hike-new-fees-solar-customers/24086473/.

    ---------2015b. APS, SRP customers can owe roommate's unpaid utility bills. Arizona Republic, July 13. http://www.azcentral.com/story/money/business/2015/07/13/arizona-utility-bills-transferred-roommate-aps-srp/29991431/.

  • Richter J. et al

    20  

    Reisner, Marc. 1986. Cadillac Desert: The American West and Its Disappearing Water. New York: Viking Penguin.

    Salt River Project. 2013a. Contact: News for SRP M-Power Customers August 2013.

    Salt River Project. 2013b. SRP M-Power® User's Manual.

    Salt River Project. 2014a. Learn how the smart grid will deliver more reliable energy to your home 2014 [cited April 5 2014]. Available from http://www.srpnet.com/electric/home/grid/default.aspx.

    Salt River Project. 2014b. M-Power pre-paid electricity price plan 2014 [cited April 5 2014]. Available from http://www.srpnet.com/payment/mpower/default.aspx#say.

    Salt River Project. 2015a. A History of the Salt River Project [cited July 23 2015]. Available from http://www.srpnet.com/about/history/default.aspx.

    Schuurbiers, D. (2011). What Happens in the Lab: Applying Midstream Modulation to Enhance Critical Reflection in the Laboratory. Science and Engineering Ethics, 17 (4), 769-788. DOI: 10.1007/s11948-011-9317-8

    Schuurbiers, D., & Fisher, E. (2009). Lab‐Scale Intervention. EMBO reports, 10 (5), 424-427. Schwartz, Judith. 2012. Salt River Project (SRP): The Persistence of Consumer Choice.

    Washington, DC: Association for Demand Response & Smart Grid.

    Shove, Elizabeth, and Gordon Walker. 2014. “What Is Energy For? Social Practice and Energy Demand.” Theory, Culture & Society 31 (5):41-58. DOI: 10.1177/0263276414536746

    Slayton, Rebecca. 2013. "Efficient, Secure Green: Digital Utopianism and the Challenge of Making the Electrical Grid "Smart"." Information & Culture 48 (4):448-478.

    Smith, Crosbie. 1998. The Science of Energy: A Cultural History of Energy Physics in Victorian Britain. London: The University of Chicago Press.

    Smith, Merritt Roe, and Leo Marx, eds. 1994. Does Technology Drive History? The Dilemma of Technological Determinism. Cambridge, MA: The MIT Press.

    Sovacool, Benjamin K., and Marilyn A. Brown. 2015. “Deconstructing Facts and Frames in Energy Research: Maxims for Evaluating Contentious Problems.” Energy Policy 86:36-42. DOI:10.1016/j.enpol.2015.06.020

    Steinberg, Ted. 2009. Down to Earth: Nature’s Role in American History. New York: Oxford University Press.

    Stilgoe, Jack, Richard Owen, and Phil Macnaghten. 2013. “Developing a Framework for Responsible Innovation.” Research Policy 42 (9):1568-1580. DOI:10.1016/j.respol.2013.05.008

  • Richter J. et al

    21  

    Theobald, Bill. 2015. Census: Phoenix Area Grew Rapidly. Arizona Republic, March 26. http://www.azcentral.com/story/news/arizona/politics/2015/03/26/census-phoenix-area-population-grew-rapidly/70507534/.

    Trabish, Herman K. 2013. “Arizona Utility Funds Solar Smear Campaign, Saying it is ‘Obligated to Fight.’” Greentech Media Solar, October 22. http://www.greentechmedia.com/articles/read/arizona-utility-admits-funding-anti-solar-ad-campaign.

    Unseld, Charles T., Denton E. Morrison, David L. Sills, and C.P. Wolf. 1979. Supporting Paper 5: Sociopolitical Effects of Energy Use and Policy. Edited by Committee on Nuclear and Alternative Energy Systems National Research Council, Reports to the Sociopolitical Effects Resource Group, Risk and Impact Panel. Washington, D.C.: National Academy of Sciences.

    Wilshire, Howard G., Jane E. Nelson, and Richard W. Hazlett. 2008. The American West at Risk: Science, Myths, and Politics of Land Abuse and Recovery. New York: Oxford University Press.

    Winner, Langdon. 1986. The Whale and the Reactor: A Search for Limits in an Age of High Technology. Chicago, IL: University of Chicago Press.

    Wynne, Brian. 2011. “Lab Work Goes Social, and Vice Versa: Strategising Public Engagement Processes.” Science and Engineering Ethics 17 (4):791-800. DOI: 10.1007/s11948-011-9316-9.

    Ye, Lin and Nancy Grimm. 2013. “Modelling Potential Impacts of Climate Change on Water and Soil Nitrate Export from a Mid-Sized, Semi-Arid Watershed in the US Southwest.” Climatic Change 129 (2). DOI: 10.1007/s10584-013-0827-z.