Constellation and Google agree a 20-year PPA for 890 MW of nuclear uprates in PJM

Constellation Energy and Google on October 6, 2026 announced a 20-year power purchase agreement to add 890 megawatts of nuclear capacity on the PJM Interconnection grid from uprates at 11 Constellation-owned units across six sites in Illinois, Pennsylvania, and New Jersey.

The release says that capacity is entirely new, that the first uprate is expected to be delivered by 2028, and that the work represents more than $4.3 billion of new investment by Constellation. A separate 15-year energy supply agreement covers an additional 2,700 MW in PJM’s fleet.

Who this affects

• For exporters: Not specified in the record.

• For investors: Constellation is the investing party, at more than $4.3 billion, against a 20-year PPA for 890 MW of new capacity and a 15-year, 2,700 MW supply agreement the release describes as revenue certainty for existing assets.

• For counsel/compliance: The release names a 20-year power purchase agreement, a 15-year energy supply agreement, an expanded five-year technology alliance under which Constellation selected Google Cloud and Gemini Enterprise, and a strategic framework to evaluate new clean generation, storage, and demand response. No price, plant names, or filed instrument is in the document.

• For policymakers: The release calls the agreement a direct response to PJM’s “Bring Your Own Power” proposal and a model for expanding supply “without state or federal mandates.” Amanda Peterson Corio, global head of energy and power at Google, said the PJM grid serves 67 million people.

The read

The 890 MW and the 2,700 MW are not the same product. The release says the 890 MW is incremental, carbon-free capacity from uprates, equal to “the output of several Small Modular Reactors (SMRs) or a large new conventional reactor,” with the first uprate expected by 2028. The 2,700 MW leg is written as revenue certainty so “existing assets remain economically viable without taking resources off of the grid.” A third leg is commercial, not electrical: Constellation selected Google Cloud and Gemini Enterprise for a five-year “AI for energy” alliance covering site selection, interconnection planning, asset health, and outage management. Plant names and price are absent.

What was the action?

Google and Constellation Energy announced a long-term clean energy collaboration to bring 890 MW of new nuclear capacity onto the PJM grid, plus the 2,700 MW supply agreement and the technology alliance.

What’s the penalty / scope, and how is it set?

No penalty. Scope in the document is a 20-year PPA enabling investment in new equipment and technology at 11 units in Illinois, Pennsylvania, and New Jersey, to raise thermal and electrical efficiency; more than $4.3 billion of new Constellation investment; roughly 4,400 existing jobs sustained and approximately 7,200 construction jobs during the building period; and a 15-year agreement for 2,700 MW in PJM’s fleet. The first uprate is expected to be delivered by 2028.

Who else is exposed?

Named parties are Google and Constellation Energy. Joe Dominguez is named as chairman, president and CEO of Constellation; Amanda Peterson Corio as global head of energy and power at Google. The grid named is PJM. Sites are six nuclear plants in Illinois, Pennsylvania, and New Jersey; the release does not name them. No other offtaker is named.

What happens next

The document says the first uprate is expected to be delivered by 2028. It also describes a framework “intended to identify potential projects, commercial structures, and policy pathways” for additional clean technologies, prioritizing near-term efforts in PJM. Which units are uprated, and on what price, is not in the record.