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The Stirling dish is a 30-year-old technology that's just now becoming cost-effective thanks to big solar-power orders from utilities. In time, 70,000 of these "solar trees" planted in the Mojave Desert by Stirling Energy Systems of Phoenix could power a million homes.
|  The economics -- and the technology -- of turning light into electricity have changed. We have the inside look at the industrial-strength power plants coming soon to a grid near you. (more)  Meet the companies tackling nine of humanity's biggest problems -- and making millions saving us from ourselves. (more) |
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