When a capacity auction clears at the price ceiling two years in a row and still comes up short, the market is communicating something regulators cannot cap: genuine scarcity. That is where income investors need to pay attention right now.
PJM’s 2028/2029 capacity auction cleared at the $325/MW-day price cap across its entire region, leaving the grid operator roughly 6.8 GW below its installed reserve margin target. That is a wider gap than the prior year’s shortfall of about 6.5 GW, which was the first such miss in PJM history. PJM’s own same-offer, uncapped simulation puts the RTO-wide clearing price at about $555/MW-day, roughly 71% above the applied cap, implying the collar reduced total auction costs by about $13.3 billion. The suppressed price is not a sign of health. It is a ceiling on what generators can earn in a market that is structurally undersupplied.
The Opportunity for Income Investors
The conventional knock on power producers has always been cyclicality. Capacity prices spike, new supply rushes in, prices collapse. That cycle appears to be broken. The 2028/29 auction drew only about 525 MW in new resources, including 208 MW of uprates to existing generation, down from 774 MW in the previous auction. Higher allowed payments are not pulling in enough new supply to close the gap.
That creates a durable revenue floor for existing capacity owners. Constellation Energy (CEG) cleared 18,875 MW, securing roughly $2.2 billion in capacity revenue for the 2028/29 year. Vistra (VST) and Talen Energy (TLN) each disclosed that they cleared 10,924 MW and 10,180 MW, generating approximately $1.3 billion and $1.2 billion in capacity revenue, respectively. NRG Energy (NRG) cleared 6,839 MW at the same $325/MW-day average price. These are not speculative bets on power prices. They are contracted revenue streams, booked years in advance.
Talen’s Q2 call provided further context: West Hub spark spreads had increased by nearly 50% from the prior year, and management noted that the last three PJM auctions would have cleared in excess of $500/MW-day without the price cap. The collar protects ratepayers but compresses what generators can earn, meaning the real earnings power of these fleets is being systematically understated in reported capacity revenue.
Where the Rules Are Being Rewritten
The policy environment is moving fast, and not entirely in generators’ favor. PJM has been advancing frameworks that would allow new large loads, including data centers, to bring their own new generation or accept earlier curtailment risk under a connect-and-manage style approach. A Union of Concerned Scientists analysis found that, across 130 data center-related transmission interconnection projects in PJM states it reviewed, more than 95% passed transmission connection costs on to customers, totaling about $4.3 billion in projects approved in 2024. The proposed shift to participant funding changes who bears that cost.
For Exelon (EXC), the regulated side of this story, the dynamics differ. Exelon has guided to roughly $41 billion to $42 billion of capital expenditures over 2026 through 2029, with a growing emphasis on transmission and grid reliability. The company also faces regulatory uncertainty, highlighted by PECO’s April 2026 withdrawal of its electric and natural gas distribution rate review filings in Pennsylvania. That is the cap on the regulated payoff: rate cases move slowly, and consumer advocates are pushing back on cost recovery.
Building Wealth Around This Idea
The clearest expression of this thesis sits with the merchant generators. CEG is the most hedged with the most predictable cash flow; VST has the largest absolute EBITDA and the biggest step-up from the Calpine integration; TLN carries the highest leverage to spot PJM nuclear pricing. Together they offer a range of risk tolerances within the same fundamental backdrop.
Income investors should size positions with the policy risk in mind. The price collar is temporary by design, and PJM has outlined plans for a one-time reliability backstop procurement intended to address the roughly 6.8 GW shortfall. If that mechanism changes how capacity is priced or who funds new supply, revenue assumptions across the sector will need revisiting. The opportunity is real, but so is the regulatory wildcard embedded in every earnings model.
The Wealth Builder Takeaway
A market that cannot attract new supply even at the maximum allowed price is telling investors something the headlines have mostly missed: the income available from PJM’s power shortage is not temporary yield, it is structural. The generators who own the existing megawatts are being paid to solve a problem that cannot be solved quickly. That is worth owning, at the right size, with both eyes on the rate-case calendar.
