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March 24 -- To be cost-effective, any source of power has to produce more energy than it consumes. Oil companies would hardly turn a profit, for example, if extracting a barrel of oil required the energy output of a second barrel of oil...

Thanks to dramatic improvements in the manufacture of both wind and solar technologies, that appears to be more than possible. A new study published in the journal Energy & Environmental Science finds that wind and solar not only produce enough power to be energetically sustainable but could support grid-scale energy storage as well. >>View Article

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