PJM Capacity Prices Hit Record $333/MW-Day as Data Center Load
- Analysis Data Centers Grid Capacity Grid Connection & Reliability
Marin Holt
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- 7 minutes read
- PJM 2027/2028 auction cleared at $333.44/MW-day price cap, third consecutive record
- PJM procured 145,780 MW in December 2025 auction, 6,625 MW below 20% reserve margin target
- Data centers accounted for $6.5B or 40% of $16.4B total capacity costs
- PJM peak demand forecast to grow from 160 GW to 210 GW by 2035
- 30 of 32 GW new load 2024-2030 attributed to data centers
- Dominion Zone to add 20,000+ MW of data center load by 2037
PJM Interconnection, which operates the largest grid in North America serving 67 million people across 13 states and Washington D.C., has recorded three consecutive capacity auctions at record-high prices, driven by data center load growth that is outpacing new generation construction and threatening the grid operator’s ability to meet its installed reserve margin target.
Capacity Prices Hit Record $333/MW-Day as Shortfall Widens
The 2027/2028 Base Residual Auction cleared at $333.44/MW-day — a price cap — marking the third consecutive record-setting auction. The prior auction settled at $329.17/MW-day for the 2026/2027 delivery year, up from $28.92/MW-day in 2024/2025. PJM procured 145,780 MW in its December 2025 auction, approximately 6,625 MW below the grid operator’s 20% installed reserve margin target. This marks the first time the entire PJM region, including Fixed Resource Requirement areas, has fallen short of the reliability requirement.
Data center load accounted for $6.5 billion — 40% — of the $16.4 billion in total capacity costs in PJM’s most recent auction, according to the grid operator’s independent market monitor, Monitoring Analytics. Across the last three auctions, data center-related costs have totaled $21.3 billion, or 45% of $47.2 billion in cleared capacity costs.
32 GW of New Load Projected by 2030, Nearly All from Data Centers
PJM’s 2025 long-term load forecast projects peak demand growing from 160 GW to 210 GW by 2035. Of the 32 GW increase projected from 2024 to 2030, approximately 30 GW is attributed to data centers. The Dominion Zone — which includes Northern Virginia’s data center concentration — alone is forecast to add more than 20,000 MW of data center load by 2037, compared to 5,700 MW projected as recently as 2022.
Nearly 5,100 MW of the 5,250 MW increase in PJM’s peak load forecast for the 2027/2028 delivery year came from data centers, making the sector the dominant driver of PJM’s resource adequacy challenges. FERC Chairman Laura Swett described the situation as “very concerning” at a December 2025 open meeting, stating that results suggest the Commission must act to ensure new supply can interconnect to PJM quickly enough to meet surging demand.
Consumer Cost Impact and Regulatory Response
The 67 million people served by PJM saw an estimated $9.4 billion increase in electricity bills driven by data center-related capacity costs. In Washington D.C., Pepco residential customers experienced average monthly bill increases of $21 starting in June 2025. PJM’s board approved approximately $6 billion in transmission projects in February 2025 under the 2024 Regional Transmission Expansion Plan to address accelerated load growth.
PJM launched a Critical Issue Fast Path stakeholder process to develop reliability solutions for integrating large loads rapidly. Twelve proposals emerged from three months of meetings, but none achieved supermajority support from the Members Committee. PJM has also proposed a Non-Capacity-Backed Load framework that would allow new data center connections with curtailment risk borne by the customer rather than the broader system. If the 2028/2029 auction — scheduled for June 2026 — also fails to meet the reserve margin, PJM may be required to conduct an emergency Reliability Backstop Auction.
Critical Analysis
PJM’s projected 30 GW of new data center load by 2030 represents the largest single-category addition of nonlinear loads in North American grid history: hyperscale facilities deploy thousands of switch-mode power supply rectifiers generating dominant 3rd, 5th, and 7th order harmonic currents, and aggregated TDD at Dominion Zone distribution substations may approach IEEE 519-2022 Table 2 limits of 5-8% (for ISC/IL ratios of 20-50) without active power factor correction. PJM is 6,625 MW below its 20% installed reserve margin as of the December 2025 BRA clearing at the $333.44/MW-day price cap — the third consecutive record auction — with Dominion Zone data centers projected to add over 20,000 MW by 2037.
5-Year Projection
The 5-year trajectory indicates severe supply chain bottlenecks for Capacity Market (PJM BRA), pushing developers toward alternative topologies and domestic manufacturing pipelines.
Critical Perspective
The latest PJM auction cleared at $333/MW-day. This price is significantly higher than ERCOT’s average capacity prices, which have remained below $10/MW-day for years. The California ISO’s 2000-2001 energy crisis saw prices spike dramatically due to generation shortages. Are we adequately planning for the pace of data center buildouts versus transmission and generation buildouts?
