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PJM Grid Under Severe Strain as AI Energy Demand Outpaces Supply

Projected electricity bills in PJM territory are set to surge over 20 percent this summer owing to a widening gap between demand growth and new generation.

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The former Three Mile Island nuclear power plant in Londonderry Township, Pennsylvania, U.S., June 25, 2025. REUTERS/Eduardo Munoz/File Photo
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Overview

  • PJM heads into its next capacity auction today under unprecedented strain as AI-driven data centers soak up power faster than new plants can be built.
  • Last year’s annual auction saw capacity prices jump over 800 percent, a spike that is translating into a projected 20 percent increase in consumer electricity bills this summer.
  • Pennsylvania Governor Josh Shapiro has warned the state may leave the interconnection unless wholesale costs come down.
  • Reforms by PJM, including capping auction prices at $325 per megawatt-day and fast-tracking cleared projects, have yet to deliver the extra capacity needed.
  • The grid has lost more than 5.6 gigawatts of generation in the past decade as retirements accelerate and new projects face permitting and financing delays.