PJM Bears Are Counting Supply That Faces Real Delivery Risk
Gas turbine manufacturing backlogs and a capacity market that rewards slower assets create a delivery gap the bearish consensus has not priced in.
PJM Western Hub spot power hit $73.72/MWh on Monday (2026-08-31), and the 77% bearish consensus on PJM real-time reflects a market confident that supply solutions are on the way. That confidence rests on shakier ground than the auction data alone suggests.7
The most recent challenge to the bullish-capacity premise arrived August 24 (2026-08-24), when Canary Media reported that while PJM has greenlit a substantial block of new clean power, gas turbine manufacturing backlogs and fierce competition for engineering and construction firms are pushing gas plant completion timelines out. Batteries carry a clear time-to-power advantage over gas. Yet batteries earn less in PJM's capacity market than gas plants do, Rutigliano noted in that report. The market structure rewards the slower asset.7
That supply-side friction sits against a load picture that keeps expanding. Joseph Bowring, president of Monitoring Analytics, PJM's independent market monitor, told Utility Dive on July 20 (2026-07-20) that data centers accounted for $6.3 billion, or 38%, of the $16.4 billion in charges from PJM's most recent capacity auction.4 Across the last four base capacity auctions, data center-driven charges reached $29.4 billion, or 46% of the $63.6 billion in total charges over that period.4 Those numbers reflect load that is already connected. The forward pipeline has not yet materialized.
PJM staff proposed a one-time backstop auction to procure roughly 6.8 GW — the shortfall identified from the last base capacity auction.4 The auction was accelerated to September from an original 2027 slot as demand pressure mounted.2 But the 6.8 GW target was always a backward-looking figure. Jefferies, in comments cited by PJM's board, warned that a backstop auction limited to a prior-cycle deficit "fails to solve the crux of PJM's issue — new large loads which have yet to materialize."5 Grid Strategies projects data center-driven demand growth of 65 to 90 GW across PJM territory by 2029.1
PJM's board responded in early August (2026-08-05) by decentralizing the problem. A bilateral matchmaking process overseen by Charles River Associates, following a request for proposals from June 9 (2026-06-09), runs alongside a proposal for states to manage new supply and curtailment.5,6 Eligible resources must be online by June 1, 2032.5 For gas plants already navigating manufacturing queues and construction competition, five and a half years is a shorter window than it looks.7
Transmission adds further drag. FERC directed regional grid operators to upgrade infrastructure in a late-2021 rule, and those operators subsequently requested extensions on the federal deadline.1 Resources that clear a capacity auction cannot reliably reach load when transmission bottlenecks remain unresolved. Grid Strategies' 65-to-90 GW demand projection assumes a functioning interconnection path; delays on that front compress the available runway for supply to meet load growth.1
MISO, which interconnects with PJM, is registering a bullish read driven by outages, moving in the opposite direction to PJM's 77% bearish weight. MISO's seasonal readiness data showed up to 17 GW of incremental outages during stress periods spanning January 15 through 17 (2026-01-15 to 2026-01-17), with a three-day uplift cost of $4 million.3 MISO tightness historically drives import demand at the PJM border on constrained days. It is not a standalone PJM bull catalyst, but it narrows the margin for error in the bearish base case.
September's backstop auction is the near-term test. If it clears well above 6.8 GW and developers confirm credible June 2032 timelines, the bearish consensus holds. If gas plant schedules continue slipping and the auction fails to attract sufficient resource commitments, the gap between PJM's forward load trajectory and its confirmed supply becomes harder to dismiss — and the spot market will eventually price it.4,2,7