Photo: Cogenra Two Birds With One Stone (But No Birds Actually Harmed) Solar water heaters make a lot of sense. Solar photovoltaic panels make a lot of sense too. But why choose between them? Startup Cogenra is combining the two solar technologies in its solar arrays, increasing the total amount of solar energy that can be captured (and thus reducing reliance on other sources of energy that aren’t as clean). It’s a very clever system, and if it works well, I hope most solar arrays that are close enough to a user of hot water will be like that in the future (obviously, it wouldn’t work if the array… Read the full story on TreeHugger
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