PJM Backstop Board Decision Sets $555/MW-Day Cap and Large-Load Rules

What the Board actually approved

The July 27 action directs PJM staff to make two filings at FERC. The first creates the proposed Reliability Backstop Procurement (RBP). Its initial central-procurement need is the 6,831 MW difference between the 2028/2029 auction's reliability requirement and cleared capacity. Qualifying bilateral contracts and self-supply commitments would reduce that volume before the central bid window.

PJM's design sets a volume-weighted maximum willingness to pay of $555/MW-day in UCAP terms. Selected resources could receive fixed commitments for as long as 15 years and must reach commercial operation by June 1, 2032. New annual demand-response and distributed-energy resources may participate if they have the required sites and contracts for the full commitment term.

The proposed procurement calendar

• August 2026: PJM opens the bilateral matching process for new loads and resources.
• September 30-October 21: PJM opens the central RBP bid window for any remaining target.
• October 22-December 2: PJM evaluates bids and finalizes results before the December Base Residual Auction.
• June 1, 2032: Latest proposed in-service date for selected resources.

These dates are the Board-directed design, not a substitute for the tariff PJM files or any later FERC order. Procurement teams should track the filing and resulting utility or supplier treatment before using the schedule in a budget.

Who could pay

PJM proposes assigning backstop costs to load zones and load-serving entities associated with incremental large-load additions. A state or other retail regulatory authority could direct how costs are allocated within its jurisdiction. Where no directed approach applies, the design allows allocation across an LSE's load using peak-load contribution.

That is not a customer-specific bill forecast. The final effect depends on FERC-approved tariff language, state commission decisions, utility riders, supplier contract provisions, and each account's capacity obligation. Buyers should ask suppliers to identify whether RBP-related charges would be fixed, passed through, or reopened under a change-in-law clause.

The 50 MW large-load service line

The companion Insufficient Resource Adequacy Service framework would place new loads of at least 50 MW at a single site, or within a one-mile area, in a Large Load Registry. New large loads without supporting supply by June 1, 2027 could be curtailed before PJM calls Pre-Emergency Load Management. Any compensation method would require FERC approval and still interact with state jurisdiction.

Starting with the 2029/2030 delivery year, incremental new load without qualifying supply would also be removed from the demand used in future capacity auctions until supporting resources are brought forward. This is the commercial hinge: a large campus may face both service-curtailment conditions and a direct obligation to demonstrate supply.

Buyer action list

• Separate status from certainty: treat this as a Board-directed filing design until FERC acts.
• Map contract exposure: identify capacity, regulatory-change, uplift, and new-rider pass-through clauses before renewal.
• For 50 MW-plus projects: document energization dates, supply arrangements, onsite resources, curtailment capability, and utility coordination.
• For flexible existing load: test whether a long-term demand-response commitment is operationally credible before treating RBP eligibility as revenue.

Sources: PJM Board decisional letter, Reliability Backstop Procurement decision, Insufficient Resource Adequacy Service decision, and PJM Inside Lines announcement, July 27, 2026.