PJM: Where Being Available Gets PaidNarrow moat

Vistra (VST) — moat facet

A retainer for existing, set at auction by a committee that answers to consumers rather than to generators.

PJM manages about 160,709 megawatts of peak demand for roughly 67 million people across thirteen states and the District of Columbia1, and unlike ERCOT it runs a capacity market: generators are paid to be available, separately from what they earn selling energy.

East segment capacity revenue, 2025 ($m)$793mCapacity sold$566mCapacity purchased$227mNetERCOT has no equivalent - a Texas plant earns nothing for being available
The same physical asset has a different revenue shape depending on which side of a market boundary it sits.

That is why Vistra's East segment has a revenue line Texas does not. In 2025 East sold $793 million of capacity, offset by $566 million purchased2 — a net position that arrives whether or not the plants run hard.

The strategic significance is diversification of revenue shape rather than of geography. A capacity payment is closer to a contracted cash flow than an energy margin is: it is set at auction, for a delivery year, in advance. A company holding both an energy-only Texas position and a capacity-paying PJM position has two different exposures to the same underlying commodity.

It is also where the nuclear fleet mostly sits. Four of Vistra's six reactors — Beaver Valley 1 and 2, Perry and Davis-Besse — are in PJM3, and they are the units Meta has contracted4. A PJM nuclear plant therefore now has three revenue sources stacked: energy, capacity, and a twenty-year contract.

The catch is that PJM's capacity auction rules are rewritten regularly, and each revision moves large sums between generators, load and consumers. The market's own stakeholders and its federal regulator determine what a megawatt of availability is worth, and they have changed their minds repeatedly. A capacity payment is more predictable than an energy margin within a delivery year and considerably less predictable across a decade.

Moat trajectory: Holding steady

Capacity revenue is real and its price is set at auction by a process that has revised itself repeatedly in both directions. There is no trend here, only rulemakings.

The number that tests this moat
Reported
Net capacity revenue, East
$227M - $793M sold, $566M purchased

The revenue line the Texas segment does not have, set at auction under rules revised repeatedly by a stakeholder process. Read PJM's auction parameter filings as closely as any demand forecast.

Source: Vistra Corp. Form 10-K, fiscal year 2025 ↗
⚠ Threats to the moat
⚠ THREAT 01
Somebody Else Sets the Capacity Price
$227 million of net capacity revenue, determined by a stakeholder process that has changed its mind repeatedly.
References
  1. ReportedPJM manages about 160,709 megawatts of peak demand for roughly 67 million people across thirteen states and the District of Columbia, and unlike ERCOT it runs a capacity market: generators are paid to be available, separately...
    Vistra Corp. Form 10-K, FY2025, market discussion — "ERCOT is an ISO that manages the flow of electricity from approximately 83,707 MW of 2025 peak demand to approximately 27 million Texas customers, representing approximately 90% of the state's electric load"; "PJM is an RTO that manages the flow of electricity from approximately 160,709 MW of peak 2025 demand to approximately 67 million customers" across thirteen states and the District of Columbia; "if a less efficient natural gas unit is needed to meet demand, its offer price sets the market clearing price for all dispatched generation in that market, regardless of other units' offer prices"; prices "vary within different zones due to transmission losses and congestion"; under the PUCT-approved Emergency Pricing Program the system-wide offer cap temporarily falls to $2,000/MWh if prices have been at the cap for 12 hours in a rolling 24-hour period, and the maximum point on each ASDC is reduced to $2,000/MWh for the remainder of the calendar year once the Cost of New Entry reference price is exceeded — FY2025 · publ. February 2026 · source ↗
  2. ReportedIn 2025 East sold $793 million of capacity, offset by $566 million purchased — a net position that arrives whether or not the plants run hard
    Vistra Corp. Form 10-K, FY2025, segment revenue note — total revenues by segment for 2025: Retail $14,340M, Texas $5,353M, East $6,174M, West $325M, Sunset $74M, eliminations $(8,528)M, total $17,738M; intersegment sales Retail $107M, Texas $4,419M, East $4,005M, West $3M, Sunset $(3)M, eliminations $(8,531)M; unrealized hedging revenue $(766)M in 2025 against $1,013M in 2024; realized hedging revenue $583M; transferable PTC revenues $229M; East capacity revenue of $793M sold offset by $566M purchased. For 2024 total revenues were Retail $12,797M, Texas $5,394M, East $5,661M, West $839M, Sunset $39M, eliminations $(7,506)M, total $17,224M; for 2023, Retail $10,572M, Texas $3,979M, East $5,890M, West $866M, Sunset $48M, eliminations $(6,576)M, total $14,779M — FY2025 · publ. February 2026 · source ↗
  3. ReportedFour of Vistra's six reactors — Beaver Valley 1 and 2, Perry and Davis-Besse — are in PJM, and they are the units Meta has contracted
    Vistra and Meta announce agreements to support nuclear plants in PJM, 9 January 2026 — twenty-year power purchase agreements under which Vistra will supply Meta with a total of 2,609 MW of carbon-free power and capacity from its PJM nuclear plants: 1,268 MW of energy and capacity from Perry and 908 MW from Davis-Besse, plus 213 MW of uprate energy and capacity from Perry, 80 MW from Davis-Besse and 140 MW from Beaver Valley; delivery commences on a portion of the operating energy and capacity in late 2026 with full delivery by year end 2027, and uprate delivery commences in 2031 with full delivery by year end 2034; Vistra agreed to be the preferred power partner for Helix Digital Infrastructure, a newly formed company designed to develop infrastructure for AI-oriented hyperscalers. Meta contracted up to 6.6 GW of nuclear power across agreements with Vistra, Oklo and TerraPower announced the same day — January 2026 · publ. January 2026 · source ↗
  4. ReportedFour of Vistra's six reactors — Beaver Valley 1 and 2, Perry and Davis-Besse — are in PJM, and they are the units Meta has contracted
    Vistra and Meta announce agreements to support nuclear plants in PJM, 9 January 2026 — twenty-year power purchase agreements under which Vistra will supply Meta with a total of 2,609 MW of carbon-free power and capacity from its PJM nuclear plants: 1,268 MW of energy and capacity from Perry and 908 MW from Davis-Besse, plus 213 MW of uprate energy and capacity from Perry, 80 MW from Davis-Besse and 140 MW from Beaver Valley; delivery commences on a portion of the operating energy and capacity in late 2026 with full delivery by year end 2027, and uprate delivery commences in 2031 with full delivery by year end 2034; Vistra agreed to be the preferred power partner for Helix Digital Infrastructure, a newly formed company designed to develop infrastructure for AI-oriented hyperscalers. Meta contracted up to 6.6 GW of nuclear power across agreements with Vistra, Oklo and TerraPower announced the same day — January 2026 · publ. January 2026 · source ↗
Sources
Generated September 23, 2026