renewable energy?

issue of The Dude : Renewable Energy ok, so I prepare a lecture on renewable energies. Mainly solar energy. . . . Can someone give me some facts and figures havn't, perhaps some angle I'm still? I intend to the emotional aspect of the preservation of the environment and the logical page savings on monthly electric bill (this is a persuasive speech) to use. . . Then maybe the efficiency of solar cells, or that the average energy produced by wind? or even better if someone were any figures on

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