31 Mar '12, 5pm

Producing solar power at night? Must be an April fool's joke... or is it? Find out here:

A very large solar power plant in Spain produces electricity even at night . It does so by storing heat produced in the day with its 2,600 mirrored heliostats, in molten salts which reach temperatures of 500 degrees Celsius. The molten salt battery storage system can retain heat for 16 hours. Energy held in the salts is used to make steam, which turn turbines to generate electricity. In summer, so much heat is generated and stored the plant can run twenty four hours a day. The amount of energy produced at the plant powers about 30,000 households. What makes such power generation possible are thousands of heliostats which concentrate sunlight by 1,000 times. One of the chief criticisms of solar power is the limited availability of sunlight, but energy storage systems like molten salts are one answer. A subsidy of five million Euros from the European Commission supported con...

Full article: http://www.care2.com/greenliving/solar-power-at-night.htm...

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