The "Holy Grail for Renewable Energy": Solar Power Makes Electricity Day and Night

One of the arguments often used to denegrate solar power is that they don’t work when it is cloudy or at night. But a new demonstration project in Hawaii proves this isn’t so. Keahole Solar Power has installed an array of Sopogy “Micro-scale Concentrating Solar Power Concentrators” at the Holaniku Solar Farm on Hawaii’s Big Island- a thousand solar collectors covering 3.8 acres, with a thermal energy of 2 megawatts.

They use the output to heat 8,000 gallons of water which runs through <a href="http://www.treehugger.com/files/2008/05/put-your-waste-heat-…Read the full story on TreeHugger

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