Google's 890 MW Nuclear Deal and the Grid It Plugs Into

TL;DR: Google signed a 20-year power purchase agreement with Constellation Energy on October 6, 2026. It funds upgrades at 11 nuclear units that add 890 megawatts to the PJM grid, backed by more than $4.3 billion of Constellation investment. A separate 15-year deal covers 2,700 more megawatts from existing plants.

On a submarine I signed off on QA jobs, and the habit I took out of that work is to ask what fails first. So when a headline says Google is buying nuclear power, I look at the grid it plugs into before I look at the reactors. That is where the story is. (source: googlecloudpresscorner.com)

What did Google and Constellation actually sign?

They signed two contracts, and the headline number blends them. According to Google and Constellation's joint announcement, the 20-year agreement "will enable investments in new equipment and technology at 11 Constellation-owned nuclear units in Illinois, Pennsylvania, and New Jersey." The same release says the first uprate is expected by 2028.

The second contract is different. The companies also entered a 15-year energy supply agreement for 2,700 megawatts, which the release says keeps existing assets economically viable. That is revenue for plants already running.

Piece	Size	Term	What it does
Power purchase agreement	890 MW	20 years	Funds upgrades at 11 units, per Google's release
Energy supply agreement	2,700 MW	15 years	Supports existing generation, per the same release
Combined	3,590 MW	n/a	Only 890 MW is new capacity, per Brownstone Research

The 3,590 figure misleads. As Brownstone Research puts it, the larger contract "helps secure access to power, but it does not add another 2,700 megawatts to the grid."

How big is the power problem this deal is aimed at?

Bigger than this deal. Brownstone Research reports that PJM's annual forecast has summer peak demand rising "from roughly 160 gigawatts in 2027 to 191 gigawatts in 2031." I could not open PJM's own filing, so I am relying on Brownstone's reading of it. That is nearly 31 gigawatts in four years. Brownstone's own arithmetic is that matching it "would require roughly 34 expansions the size of Google's deal."

Supply is already behind. Per the same report, PJM's capacity auction for the 2028-2029 delivery year "fell about 6.8 gigawatts short of its reliability requirement." I read that as the real headline: one of the largest corporate nuclear deals of the year covers a small slice of what the grid's forecast says is coming, and even that slice only arrives if every upgrade lands on schedule.

Google's energy policy head put the constraint plainly. "The biggest challenge for us, for data center growth, is really grid congestion," Marsden Hanna told POLITICO's Energy podcast. Money for new equipment helps. It does not shorten the line to connect.

What did the market do with it?

It paid up, quickly. Yahoo Finance reports that Constellation shares rose over 12% after the announcement, and the VanEck Uranium and Nuclear ETF gained roughly 5.5% on the day.

I won't guess what Google pays for the power. A famous buyer tells you who signed, and nothing about the margin Constellation earns on the upgrades.

Why should an accredited investor care?

Because power is becoming the scarce input in the AI trade, and scarce inputs get priced into private deals too. Sooner or later a sponsor will pitch you an infrastructure fund built on contracts like this one. Downside first: how long is your capital locked up, how much of the contract's cash flow does the fee stack take, and can you read the contract?

The public-market version of this trade has already moved 12% in a day. Ask what a private version would charge you for the same exposure. My piece on deal-by-deal versus fund-level carry waterfalls shows where fees hide. I covered the earlier version of this deal in Google and Constellation Sign 890 MW Nuclear Deal, and the infrastructure side of private markets in KKR's $4.2 Billion EDF Power Solutions Deal.

What should you watch next?

I'm watching three things. The first is whether Constellation hits the 2028 date for its first uprate, since that is the first real test of the schedule behind the 890 MW. Second, the next PJM capacity auction, which will show whether the 6.8 gigawatt shortfall narrows or widens. Third, copycats. Per Yahoo Finance, Amazon signed a 20-year agreement with Constellation for the Calvert Cliffs plant in late September, so the pattern is already forming, and I expect more buyers to follow.

Common mistakes when reading this deal

The most common one is adding the two contracts together and calling it 3.6 gigawatts of new nuclear. Only 890 megawatts is new. The rest keeps existing plants earning.

Another is treating a corporate deal as a fix for the grid. Google says congestion can delay service for up to a decade, and a power purchase agreement does not change that. And people read a stock jump as proof the economics are good, when a one-day move says what traders expect and nothing about what the contract pays.

FAQ

Can nuclear power really fuel the rise of AI?

It can supply part of it. The 890 MW from this deal is new capacity, but PJM's forecast, per Brownstone Research, rises nearly 31 gigawatts by 2031. Nuclear helps. It will not cover that gap alone.

Which major AI companies are investing in nuclear energy?

Per Yahoo Finance, Microsoft signed a 20-year Constellation agreement in 2024 to restart Three Mile Island, and Google signed a 25-year deal with NextEra in 2025. Meta signed 20-year agreements with Vistra and a deal with Oklo in early 2026. Amazon signed with Constellation in late September.

Is Google building a nuclear reactor?

No, not in this deal. Google's release describes funding new equipment at 11 existing Constellation-owned nuclear units. The release says the 890 MW equals the output of several Small Modular Reactors or a large new conventional reactor.

Can I invest in this deal?

Not directly. Constellation is publicly traded, and Angel Investors Network does not sell or allocate securities. Any private fund pitched on similar contracts needs the lock-up, fee and contract questions above answered first.

Your next step

If a sponsor pitches you power-backed infrastructure this quarter, ask for the contract terms before the projections. And if you want this kind of read on deals as they land, the free AIN briefing sends it to your inbox.

Educational content only. Not investment, tax, or legal advice. Not an offer or solicitation to buy or sell securities. Past performance does not guarantee future results. Private-market investments are illiquid and involve risk of loss, including total loss of capital. Consult qualified advisers. Angel Investors Network is not a broker-dealer or investment adviser.