The price of solar photovoltaic cells has dropped 99% in the past quarter century. So in an increasing number of markets around the country, solar is at or very close to grid parity.In particular, the article focuses on a Colorado discovery that solar is looking competitive with natural gas fired plants. And, in the United States, the heavy use of air conditioning likely means that peak sun and peak energy demand will line up reasonably well.
There remain technical challenges, but this is a very encouraging place to be.
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