EIS-0454: Department of Energy Loan Guarantee to Tonopah Solar Energy, LLC, for the Proposed Crescent Dunes Solar Energy Project, Nevada

Tonopah Solar Energy, LLC applied to the BLM for a 7,680-acre right-of-way (ROW) on public lands to construct a concentrated solar thermal power plant facility approximately 13 miles northwest of Tonopah, Nye County, Nevada.  The proposed project is not expected to use the total acres applied for in the ROW application.  The facility is expected to operate for approximately 30 years.  The proposed solar power project would use concentrated solar power technology, using heliostats or mirrors to focus sunlight on a receiver erected in the center of the solar field (the power tower or central receiver).  A heat transfer fluid is heated as it passes through the receiver and is then circulated through a series of heat exchangers to generate highpressure steam.  The steam is used to power a conventional Rankine cycle steam turbine, which produces electricity.  The exhaust steam from the turbine is condensed and returned via feedwater pumps to the heat exchangers where steam is regenerated.  Hybrid cooling processes would be used for this project to minimize water use while continuing to maintain efficient power generation.  The plant design would generate a nominal capacity of 110 megawatts.