The resources needed to produce solar cells and plant them on solar farms are silicon-rich sand, sunny places, and human ingenuity, all three of which are abundant. Producing solar cells also takes energy, but solar power is fast making that abundant, too. The result is that, in contrast to earlier energy sources, solar power has routinely become cheaper and will continue to do so.
At the moment we pay for fuel, over and over, our whole lives . . . This is what made the Rockefellers rich . . . Solar and wind are not like that — the sun and wind deliver energy for free.
Bill McKibben, Here Comes the Sun
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