Pennsylvania puts a 2030 date on PJM's capacity shortfall

A study commissioned by the Pennsylvania Public Utility Commission has put a number on what data-center load growth does to PJM's grid: in the worst case the regional planning standard stops functioning, with a modeled 2030 loss-of-load expectation of 13.20—more than thirteen days a year when the system cannot serve all the load on it, or more than a hundred times the criterion PJM uses to keep shortages to roughly one event a decade. Utility Dive first reported the findings.

The reference case is the one capital should read twice. Running PJM's own 2026 load forecast, with no unusual assumptions about how much supply actually arrives, the study lands on a modeled 2030 loss-of-load expectation of 0.59, nearly six times the planning criterion; the breach sits in the model's middle. The gap owes largely to surging data-center additions—the demand side of PJM's queue moving faster than the supply side can be permitted, financed, and energized.

Steve DeFrank, the commission's chairman, said in a statement accompanying the release that demand and supply are out of balance and the status quo is unsustainable, and that urgent action is needed at PJM and across Pennsylvania so electricity supply keeps pace with demand. PJM's own response to CBS affiliate WJAC was that it has taken a number of actions to increase supply and manage new demand in line with the Ratepayer Protection Pledge that data center developers have signed to shield residential customers and other ratepayers from the reliability and cost consequences of their load. That pledge is the closest thing in the record to a rule about how new load must behave, and it is a developer's concession in advance that the residential class will not be asked to carry the cost.

Pennsylvania remains a net energy exporter in the reference case, but exports shrink from about 91 TWh in 2025 to 69 TWh by 2035 and 38 TWh by 2040; in the high-load, low-supply scenario the state becomes a net importer of 5 TWh by 2040. The report's own language suggests even that framing is generous, because large unmet load in 2031 and later years means some of the 2035 and 2040 load is likely to go unserved, with not enough regional generation to meet PJM-wide requirements.

For a decade the PJM story for investors has been the interconnection queue—who holds a position and how long it takes to energize—but the study moves the binding constraint from the queue to adequacy. As this publication has argued, connection rights now trade before electrons do; the corollary this document adds is that a connection right without firm capacity behind it is a promise the region may not be able to keep. The scarce asset is dispatchable generation and an energized position on a constrained grid, not a nameplate megawatt of merchant renewable capacity.

The study sets a floor under the value of firm, dispatchable capacity and grid position in PJM by showing the shortfall arriving inside a planning horizon with a fixed date attached rather than at its far edge. The house view, firm power repricing as the transition's scarce asset and renewables margins under pressure until contracts replace merchant exposure, finds its mechanism here: a reliability gap that has to be closed by a date. Assets selected to close an adequacy gap are chosen less by merchant economics than by what can be permitted and energized in time.

Lenders are the second-order story. A PJM position underwritten as a merchant energy asset reads as a reliability asset in the study's framing, and reliability value attaches to the years the criterion is breached rather than to average capture of a spot price. The financing question the study raises is whether a project's revenue case still holds if the shortage it is meant to serve is met first by administrative curtailment, since curtailment does not clear at a price that reaches a project's income statement.

Pennsylvania is already trying to spend its permitting leverage on supply. Last month Governor Josh Shapiro issued an executive order offering preferential permitting to data center projects with peak demand above 25 MW if they commit to certain requirements, including sourcing their electricity from new power supplies—a direct attempt to make new load bring new generation with it, treating consent, the permit, the interconnection, the state's yes, as the commodity that decides what gets built.

There is also the part of last Thursday's unanimous PUC vote that capital should read as risk. Alongside a motion on data center development and ratemaking, the commission directed its staff to propose updates to the state's emergency curtailment rules and to organize a technical conference. Emergency curtailment is how a system serves an unmet balance when there is not enough generation to go around: the operator sheds load by instruction. That is the scenario no merchant revenue forecast contains, an adequacy event that resolves administratively, with which load is shed decided by rule.

That makes a developer underwriting merchant solar or storage inside PJM on current revenues an underwriter of an asset the adequacy gap puts at risk. The date to watch is the technical conference and the curtailment rulemaking that follows it, because that is where Pennsylvania decides whether data-center load pays for the generation it needs, or whether the residential class keeps the bill and the region keeps the risk.