US wind and solar on track to overtake coal this year

Mark Repsher, an analyst who tracks the power industry at PA Consulting Group, said the figures point to larger challenges facing the power grid. Additional power plants that can be turned on at the flip of a switch will be needed to meet demand, he said. The question is whether it will come from natural gas or zero-carbon resources, such as nuclear or geothermal.

“Renewables will continue to be a huge part of the industry, but I think there will be an inflection point where the incremental value of an additional megawatt-hour from renewables will be less than some other alternatives,” he said.

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