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 Electratherm "green machines"- the organic rankine cycle waste heat generators we have shown hooked up to geothermal and other sites. The result: according to Keahole, "firm, fixed power which has been deemed as the holy grail for renewable energy."
Read more: http://www.treehugger.com/files/2009/12/the-holy-grail-for-renewable-energy.phpWant to help with Global-Warming? Please visit http://www.whiteearth.org
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