How about instead we change as a people to be less consumptive? Less cars, more carpooling and transit; less suburbs, more densified neighbourhoods; less wasteful spending, more knowledge of financial management . . . . Everything done in moderation and we can transform our society to use less of what already provides us a great life. Perhaps being more efficient is a better method of living.
Keep in mind the sun and wind also do not produce basic necessities the way oil does, including things like plastics. You need lubricants for that stuff.
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