20 May '11, 12am

Solar + Storage: SolarReserve Gets $737 Million Guarantee to Build a Plant

SolarReserve moved one big step closer toward building a 110-megawatt solar thermal plant in Nevada: the DOE has granted it a $737 million loan guarantee. The Santa Monica, Calif.-based company has created a solar thermal technology that uses heliostats -- relatively flat, independently mounted mirrors -- to focus the sun's heat on a large tank atop a 653-foot tower. But unlike the heliostat power plants designed by BrightSource Energy and e-Solar, SolarReserve's tank isn't filled with water. Instead, the system relies on a mix of molten sodium and potassium salts heated to 1,050 degrees Fahrenheit (565 Celsius) to transfer heat from the heliostats to the power production unit at the plant. Swapping out water for salt as a heat transfer fluid, SolarReserve argues, will allow it to match or top the output of the BrightSource Energy's Ivanpah plant and/or to increase the pre...

Full article: http://www.greentechmedia.com/articles/read/solar-storage...

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