Prices hit new highs in PJM electricity auction

By Peter Behr | 12/18/2025 07:09 AM EST

Escalating costs across mid-Atlantic states are fueling concerns about the artificial intelligence boom’s effect on energy affordability.

Grid operators monitoring electricity use in a control room in PJM Interconnection's headquarters near Valley Forge, Pennsylvania.

Grid operators monitoring electricity use in a control room in PJM Interconnection's headquarters near Valley Forge, Pennsylvania. PJM Interconnection

Households and businesses in the PJM Interconnection, the nation’s largest power market, will pay a record $16.4 billion to electricity generators to ensure power is available by mid-2027.

The outcome of the PJM auction for future capacity released Wednesday underscores supply challenges for the grid operator that stretches from Illinois to Virginia and serves big mid-Atlantic markets like Pennsylvania and New Jersey. PJM is striving to meet rising demand from data centers for artificial intelligence.

Payments to secure generation are a relatively small part of utility bills. But it has leaped from paying suppliers $29 daily per megawatt of capacity in the 2024-2025 delivery year to $333 after the latest capacity auction. The escalating costs are tossing fuel onto electricity affordability concerns across the country.

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PJM’s capacity prices have been held down by a two-year price cap demanded by Pennsylvania Gov. Josh Shapiro, whose state is the largest power producer in PJM’s 13 state region.

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