Constellation signs 890-MW Google nuclear PPA as PJM backstop stalls

Constellation Energy has agreed to sell 890 megawatts of nuclear output to Google under a 20-year power purchase agreement, the larger of two contracts signed in the past week that together support almost 1.1 gigawatts of expansion across its existing reactors; Amazon holds the other, which the trade coverage describes only in aggregate with Google's, leaving by subtraction something near 200 megawatts but no capacity or site breakdown.

The Google contract states the structure outright: a 20-year offtake with a named counterparty, sized to a stated capacity figure, tied to physical work at six nuclear sites, and carrying no disclosed price per megawatt-hour. That is more disclosure than the thinnest version of the transition's contract template — in October, Apex Clean Energy and Meta entered a Texas solar PPA with no stated capacity, term or price — and less than what determines the equity return on the uprates being financed.

Constellation called the Google deal a direct response to PJM's Bring Your Own Power proposal and aligned it with the White House's ratepayer protection pledge, while chairman, president and CEO Joe Dominguez framed it as one that can "serve as a model for how technology companies and the energy industry can work together ... in a way that delivers grid-wide benefits for all, funded by private entities." The closing clause is the point: cost recovery runs through a hyperscaler's operating budget rather than a utility rate case or a capacity charge spread across a transmission zone, which is the outcome the Bring Your Own Power construct appears designed to allow.

Google is not new to buying firm megawatts; the 890 megawatts here sit alongside its 396-megawatt contract at Fervo Energy's Cape Station, and a labor market has formed around the demand, as Mistral hired Google's energy lead in September for a 1-gigawatt push of its own. The nuclear contracts differ in duration and in the counterparty's balance sheet behind an asset whose output was previously sold into PJM's markets at whatever the auction cleared.

The calendar is being set by procurement that has not happened. PJM Interconnection is short about 6.8 gigawatts of new capacity and will delay a planned reliability backstop auction following the Federal Energy Regulatory Commission's Sept. 29 decision to only partly approve it, leaving the mechanism meant to clear the shortfall stalled while bilateral contracts between generators and the loads themselves step into the space. Grid access has become a customer class rather than a queue position; the FERC order adds the auction calendar to the list of variables a developer now underwrites around.

Constellation shares rose almost 14% in morning trading, which suggests investors read the contracts as underwriting capacity that had not previously been in the earnings base; firm, dispatchable generation has been trading as infrastructure while merchant solar and storage absorb margin compression. A 20-year offtake against a hyperscaler balance sheet is the closest thing a nuclear uprate gets to a regulated return without a rate case. The two agreements together support almost 1.1 gigawatts of expansion at plants that already hold their licenses, their interconnections, their switchyards and their neighbors — permission a greenfield project would spend a decade assembling.

Operations add a demand-side layer that rarely appears in a nuclear contract: the companies said the Google agreement incorporates load-shaping and demand-response capabilities to cut consumption during grid stress. Google's capacity spending has leaned toward paying for coordination rather than construction — its funding of PG&E's virtual power plant enrolled hardware already sitting in homes, and this contract does something analogous with a reactor's dispatch profile. Whether PJM's tariff will pay for that behavior as a capacity product is a question separate from whether it helps.

Under an expanded five-year technology agreement, Constellation will deploy Google Cloud and build Gemini Enterprise agentic workflows "directly into its core operations," the companies said, applying AI to site selection, power flow modeling, permitting and interconnection planning, generation optimization and infrastructure security. The counterparty buying the electrons is also supplying the software that will plan the interconnection work and model the power flows on which the expansion depends, and Constellation presented the pairing — "commercial investments in nuclear uprates with advanced Google technologies" — as the agreement's purpose, putting a single counterparty on both sides of the modeling that PJM will eventually have to accept.

Uprates, not new builds, explain the employment figures. Across the six nuclear sites covered by the Google agreement, the companies expect to sustain roughly 4,400 existing jobs and create about 7,200 temporary construction jobs — the profile of work done inside an operating plant during outages rather than at a greenfield site.

The Amazon contract remains the open item in the pair: the coverage folds it into that total without separating capacity or sites, and no price appears for either agreement. When PJM reschedules the backstop auction, the result will show whether the grid operator treats privately funded nuclear offtake as a substitute for the capacity it could not procure or as one more input to a load forecast it now has to rebuild.