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1. Introduction The primary objective of this year’s analysis effort was to identify economically viable locations for siting CSP plants in the U.S. Southwest and to communicate the results of this analysis to stakeholders for the states of California, New Mexico, Nevada, and Arizona. The viability of sites were determined in part by the level of direct normal solar radiation, area topography, access to unconstrained transmission, and proximity to load centers. The potential for economically viable power generation, combined with additional regional benefits such as job creation and pollution mitigation, were presented to state energy officials, utility stakeholders, and policymakers to support them with making more informed decisions regarding the development of their solar resource. 2. Technical Approach 2.1 1000 MW Siting Analysis Solar resource data used for the state-by-state analysis were derived from high-resolution (nominally, 10 km) satellite-based cloud cover data. Direct normal incident (DNI) resource estimates were calculated using the Perez irradiance model [i]. To identify economically attractive sites, geographical information system (GIS) data filtering algorithms were applied to the resource data, along with land type (urban, agriculture, etc.); ownership (private, state, federal); and topography. The terrain available for CSP development was conservatively estimated with a progression of GIS filters as follows: • Lands with less than 6.75 kWh/m2/day of average annual direct-normal resource were eliminated to identify only those areas with the highest economic potential. • Lands with land types and ownership that were incompatible with commercial development were eliminated. These included national parks, national preserves, wilderness areas, wildlife refuges, water, and urban areas. • Lands with slope greater than 1% and with contiguous areas smaller than 10 km2 were eliminated to identify lands with the greatest potential for low-cost development. Because energy suppliers or buyers would need to consider how future CSP plants might fit into a transmission system, Platts Research and Consulting, under subcontract to NREL, provided an analysis of transmission constraints and proximity to load centers for lands which remained once the GIS filters were applied. The resource and land exclusions, together with the regional transmission constraints and proximity to urban load centers, led to preliminary recommendations of regional development centers for large-scale CSP installations. 2.2 Economic Impacts Analysis In addition to the siting analysis, DOE funded the University of Nevada Center for Economic and Business Research1 to conduct an analysis of the economic impact of deploying 100 MW to 1000 MW of CSP capacity in the state of Nevada. The purpose of the analysis was to estimate the economic impact, in terms of employment, personal income, and gross state product (GSP) of developing some portion of Nevada’s solar energy generation resources. While the results of this analysis described in Section 3.2 are specific to Nevada, the data provide an estimate of benefits that could be realized if deployment took place in otherstateswithintheSouthwest. 2.3 Southwest Stakeholder Interactions A series of meetings were held with key stakeholders from the states of California, New Mexico, Nevada, and Arizona to present the results of the siting and economic impact analyses. A preliminary analysis of how the renewable portfolio standard (RPS) of each state pertained to a solar project and the resulting impact on residential ratepayers was also provided. In addition to these meetings, significant support was provided to the State of New Mexico as a result of Governor Richardson’s implementation of a CSP Task Force for that state. 1 The UNLV economic impact study was initiated in FY 2003.PDF Image | FY 2004 ANNUAL REPORT DOE Solar
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