PJM Capacity Crunch: What the Auction Means for Customer Bills

01The Setup

The PJM capacity market exists to ensure resource adequacy three years forward. Generators and demand response resources bid into the annual Base Residual Auction for delivery in a future planning year. Clearing prices have been so low for so long — under $30/MW-day for most of the last decade — that capacity costs became something most commercial customers stopped paying close attention to. They were a rounding error on the bill.

That changed in 2024. The 2025/26 BRA cleared at $269.92/MW-day for the RTO zone — nearly ten times the prior year's clearing price. Subsequent auctions reinforced the new regime: tight reserves, slower generator buildout, accelerating load growth from data centers and electrification. Capacity is no longer cheap, and the rules of the market mean customers pay the clearing price.

02The Data

For a customer with 2 MW peak demand, the capacity cost shift is roughly $390,000/year — up from $42,000/year under the prior clearing price. Bills start reflecting the new prices for the June 2025 through May 2026 planning year, which is currently mid-flight.

The 2026/27 planning year cleared even higher in some zones, particularly the constrained regions in the eastern part of PJM. This is not a one-cycle event. Structural drivers — data center load growth outpacing generation buildout, retirements of dispatchable resources, slow interconnection queues — point to elevated capacity prices for at least the next three planning years.

03The Implication

Customers on fixed-rate supply contracts that include capacity pass-through are mostly insulated through the contract term. Customers on indexed contracts, hourly-priced supply, or default service are absorbing the new prices in real time. Customers about to enter renewal cycles will face quoted prices that reflect the new capacity reality — often with sticker shock.

The bigger risk for a broker or consultant isn't the price itself. It's the conversation. A customer who learns about the capacity shift from their bill instead of from their advisor concludes that their advisor wasn't paying attention. That conversation costs renewals.

04The Recommendation

1. Model your book. For every PJM customer, calculate the dollar impact of the new capacity regime against their current contract structure. Identify the customers most exposed — indexed contracts, renewals inside 12 months, expiring fixed contracts.
2. Communicate proactively. Before customers see the line item on a bill, send a customer-specific note explaining what's happening, what their exposure is, and what options exist. The note doesn't need to recommend an action; it needs to demonstrate that you saw this coming.
3. Position the strategies. For customers with operational flexibility: load shifting away from peak hours can reduce capacity tag exposure. For customers with backup generation: capacity market participation through DR can offset costs. For multi-site customers: portfolio-level peak management can yield material savings.
4. Renew the conversation about contract structure. The decade of low capacity prices is over. Fixed-rate contracts that pass capacity through are no longer free protection — they're substantive risk management. Customer education needs to update accordingly.

The capacity shift isn't a one-cycle event. The structural drivers point to elevated capacity prices for at least the next three planning years. Brokers and consultants who get out in front of this conversation will hold their books. Those who wait for the bill to do the talking will lose them.