Sunday, October 18, 2026

PARTH GODA

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Google Will Power Its AI With Nuclear. Constellation Will Run Its Plants With Google's AI.

On October 6, Google and Constellation Energy signed the largest nuclear power deal of the AI buildout: two purchase agreements covering 3,590 megawatts, plus a separate pact that puts Google Cloud and Gemini Enterprise to work inside Constellation's control rooms. It's Google's first nuclear bet on reactors that already exist, not ones still being invented.

Parth Goda··6 min read·AI-assisted draft

What Was Actually Agreed

On October 6, Google and Constellation Energy announced two power contracts and a technology agreement, bundled as one deal. The first is a 20-year power purchase agreement: Constellation will invest more than $4.3 billion to uprate 11 reactors across six plants in Illinois, Pennsylvania, and New Jersey, adding 890 megawatts of new nuclear capacity to the PJM grid, with the first upgraded output due in 2028. The second is a 15-year supply agreement for an additional 2,700 megawatts from Constellation's existing fleet — power the plants already generate today. Combined, Google is committing to 3,590 megawatts. Neither company disclosed pricing for either contract.

The third piece is what makes this a partnership rather than just a long power bill: a five-year technology agreement under which Constellation adopts Google Cloud and Gemini Enterprise to run an "AI for Energy" program, according to Google's announcement — agentic tools applied to uprate planning, permitting, and outage management inside Constellation's own plants.

Why Now

Sep '24Microsoft restartsThree Mile IslandJun '25Meta signs 20-yr dealfor Clinton plant, 1.1GWOct 6 '26Google signs 3,590MWdeal with ConstellationMid-2028First upratedreactor due online

Google isn't the first AI cloud to strike a nuclear deal with Constellation specifically, nor the first to lock up an already-operating reactor at all — Amazon struck its own 1,920-megawatt deal with Talen Energy's Susquehanna plant in 2025. What's new here is the asset for Google: its earlier nuclear bets — a small modular reactor order with Kairos Power, a fusion offtake with Commonwealth Fusion Systems — paid for technology that doesn't generate power yet. This is Google's first contract for electricity from reactors already running, and at 3,590 megawatts it's more than three times the size of Meta's Clinton deal. Google's own announcement frames the timing around a federal target set before any AI company signed on: the Department of Energy's goal of reviving or upgrading 5 gigawatts of nuclear capacity by 2030, of which Google says this deal and its prior commitments now account for close to a quarter.

What Each Side Gets

GOOGLEGETS3,590 MW of carbon-freepower on the PJM grid,locked in for 15-20 yearsto anchor AI data centersGIVES UPCapital exposure — it'seffectively financingConstellation's $4.3Buprate through the contractCONSTELLATIONGETSRevenue certainty to fund11 reactor uprates, plus athird hyperscaler customerafter Microsoft and MetaGIVES UPA seat inside its ownoperations — Gemini Enterprisenow touches site selection,permitting, and outage calls

Who It Affects

Microsoft and Meta, Constellation's two earlier AI-cloud customers, now share a grid operator and a specialized construction labor pool with Google's uprate work — all three are racing the same six-site, 11-reactor program for capacity. Amazon, running the equivalent play with Talen's Susquehanna plant, means all four major hyperscalers now hold direct claims on existing nuclear output, which gives other licensed-reactor operators — Talen, Vistra, PSEG among them — a stronger negotiating position the next time an AI cloud comes looking for power. Microsoft Azure and AWS, as cloud vendors, also lose something quieter: the software contract inside Constellation's own plant operations, a foothold Google now holds instead.

What to Watch Next

Three things would confirm this is working rather than merely signed: whether the first uprated reactor actually reaches commercial output by its 2028 target, since nuclear construction and licensing timelines slip often; whether Constellation reports that Gemini Enterprise measurably shortened the permitting or outage-management work it's meant to speed up, a claim only Constellation can make; and whether OpenAI or Anthropic — AI labs without Google's balance sheet or hyperscale data-center footprint — ever strike a comparable direct deal with an existing reactor operator, rather than leasing compute from a cloud that already has.

Sources

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