26 Jul '11, 8am

Solar PV Panel Shading, a New Consideration for ROI?

Solar PV Panel Shading, a New Consideration for ROI?

An ROI calculation weighs benefits, including costs avoided, against the costs of the project. Estimates are often required, but a more useful calculation is possible when exact components are known. This study helps on that front by putting numbers on air conditioning savings resulting from solar panel shade. The study was done over three days in April using a laboratory building on campus. The building roof has different sections: without solar panels, with tilted panels, and with flush panels. The panel shading caused a reduction in air conditioning costs equal to a 5% increase in electricity provided by the panels, the researchers found. It was a chance discovery when undergraduates were asked to take thermal images of the ceiling while waiting for another conference.

Full article: http://cleantechnica.com/2011/07/26/solar-pv-panel-shadin...

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