Grid Congestion, Not Gas, Drove Biggest Slice of PJM Price Spike

The independent watchdog that grades the PJM electric grid put out its half-year report card last Thursday under the cheerful headline "Market Monitor Finds PJM Wholesale Electricity Markets Competitive." Read down three paragraphs, and you find the opposite — the capacity market flunked, three years running, and the Monitor blames data centers. Buried further still is a number that ought to end a certain argument in Harrisburg for good: the biggest single driver of PJM's price spike wasn't natural gas. It was the wires.

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