Why are PJM's capacity auction prices expected to remain near record highs despite a price cap?

PJM's capacity auction prices are expected to remain near record highs because demand from energy-intensive data centers has outstripped electricity supply, causing a severe supply-demand imbalance that drove capacity prices up over 1,000% since 2024; although PJM imposed a temporary price cap of about $325 per megawatt-day to curb rising bills—and applied it again this year—the underlying shortage persists, including a 6-gigawatt shortfall in the December auction against reliability standards.

What is the purpose of PJM's capacity auction, and how do its prices affect consumers?

The capacity auction secures enough electricity supply to meet peak demand days on the PJM grid covering 13 Mid-Atlantic and Midwest states, with capacity prices paid to power plant operators to guarantee availability during those high-demand periods and to incentivize new plant construction; these prices are factored directly into power bills for homes and businesses across the region—serving about one in five Americans—making them a key driver of household and business energy costs.

US PJM Power Grid Auction Prices Expected to Stabilize Near Record Highs

Jul 14, 2026

PJM Interconnection expects capacity auction prices to stabilize near record highs after imposing a temporary $325 per megawatt-day cap, driven by surging data center demand and retiring fossil fuel plants. Results will take effect in 2028 to ensure grid reliability across 13 states.

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US PJM Power Grid Auction Prices Expected to Stabilize Near Record Highs

US PJM Power Grid Auction Prices Expected to Stabilize Near Record Highs

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