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PNAS: Evaluation of a proposal for reliable low-cost grid power with 100% wind, water, and solar

Authors in the Proceedings of the National Academy of Sciences find significant shortcomings in a study that concluded the feasibility of providing low-cost solutions to the grid with 100 percent penetration of wind, water and solar power in the continental U.S. “Policy makers should treat with caution any visions of a rapid, reliable, and low-cost transition to entire energy systems that relies almost exclusively on wind, solar, and hydroelectric power,” they write.

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