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August 14, 2010



This depends on your luidtate and where you are. If you're in the northern hemisphere, it faces south, with a tilt direction at the sun with respect to the average tilt of the earth. If you're in the southern hemisphere, the solar panels (both photovoltaic and solar thermal) face north. If you're on the equator, then they may lie flat on your roof. In US at a luidtate of 40 degrees, you may want a tilt of about 20 degrees (because of change of seasons). You can alway angel the panels easier than modifying an existing roof. Be sure NOT to shade any part of photovoltaic panels at ant time.

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