Given how large the ecological impact of solar and wind farms has been, it’s surprising to remember that solar and wind still constitute just 1.3 and 6.3 percent of electricity in the U.S., and 1.3 and 3.9 percent of electricity globally.
Renewables advocates would like to see the two technologies grow exponentially — from today’s five percent globally to somewhere between 30 and 100 percent of our electricity supply.
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