While carbon pricing helps push this kind of investment, the market costs of building and of running wind and solar power are dropping, on their own, faster than policy is moving. That makes a shift to renewable power inevitable. By 2022, it will simply be cheaper to build and provide a gigawatt of wind power than the cheapest fossil-fuel alternative, and solar will be just behind.
Because wind and solar are technologies, not fuels, their costs will continue to drop as time goes on.
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