Skeptics of renewable energy might struggle to believe it, but following the exciting news that solar energy is as cheap as fossil fuels in Australia, Germany, and Spain, wind power is breaking into the mainstream in the U.S.
It's been going this way for a while. Wind energy as a percentage of U.S. energy usage keeps rising:
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What's new is the cost relative to other sources. Wind is now as cheap as natural gas and coal in the U.S.
What does that mean? It means that adopting clean renewable energy doesn't have to be a matter of principled environmentalism. The only green adopters have to believe in is the green in their wallet.
With battery technology necessary for storage improving by leaps and bounds, the future for renewable energy looks rosier than ever.