27 Mar '12, 12am

A few companies are taking a new look at solar “power towers”

A few companies are taking a new look at solar “power towers”

A Smaller Route to Solar Success By MATTHEW L. WALD Aora At Aora’s plant in Almeira, Spain, mirrors focus the sun’s energy on a modest tower where the heat is captured and used to spin a turbine. In the evening, a fuel can be used. There are at least a dozen major ways to turn sunlight into electricity, but one of the more interesting is using a field of mirrors to focus the sun’s energy on a “power tower” where the heat is captured and used later to spin a turbine and turn a generator. As I have previously written , two companies are now planning to build such systems in the desert Southwest with hardware that will store the heat for a rainy day or for the period right after sunset when power demand is still high. But now comes a new player with a different concept: build the tower, but on a smaller, simpler scale, and skip the storage in favor of using using biogas or na...

Full article: http://green.blogs.nytimes.com/2012/03/26/a-smaller-route...

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