Google's Nuclear Power Deal Sends Constellation Energy Shares Up 15%

Nuclear power just got a lot more interesting to Wall Street, and it's because of a company that doesn't even operate a reactor.

Shares of Constellation Energy (NASDAQ: CEG) jumped 15% on Tuesday after the company announced a 20-year power deal with Google, the second such agreement with a tech giant in barely a week. The news rippled across the nuclear and utility sector, lifting a handful of related stocks along with it.

The deal brings 890 megawatts of new nuclear capacity onto the PJM Interconnection grid — the largest electricity grid in the U.S., serving 67 million people across 13 states and Washington, D.C. That's enough power for more than 600,000 homes, and Google is paying for it through investments across 11 existing Constellation nuclear plants in Illinois, Pennsylvania and New Jersey.

Rather than building new reactors from scratch — a process that can take a decade or more and faces constant permitting delays — Google is funding what the industry calls "uprates": upgrading turbines, steam generators and control systems at plants that are already running. It's cheaper, faster, and avoids the interconnection bottlenecks that have plagued new power projects nationwide for years.

According to the companies' joint announcement, the agreement represents more than $4.3 billion in new investment and will sustain roughly 4,400 existing jobs while creating about 7,200 new construction jobs during the build-out period. The first uprate is expected to come online by 2028, with the companies also striking a separate 15-year, 2,700-megawatt energy supply agreement to keep Constellation's broader fleet economically viable.

"The Constellation deals are positive for other independent power producers with nuclear plants that are also candidates for uprates." — Nicholas Amicucci, analyst, Evercore ISI

This is the second major tech-nuclear tie-up in a week. Constellation struck a similar deal with Amazon last week to add 190 megawatts at its Calvert Cliffs plant, the only nuclear facility in Maryland. The pattern is becoming hard to ignore: as data center demand strains the grid, hyperscalers are turning directly to nuclear operators for reliable, carbon-free power that doesn't depend on weather or battery storage buildouts.

The ripple effects moved well beyond Constellation itself. Shares of Vistra and Talen Energy, two other independent power producers with significant nuclear exposure, climbed more than 9% in sympathy on Tuesday. Evercore ISI's Nicholas Amicucci flagged both names as logical beneficiaries of the broader uprate trend in a note to clients, arguing the Google deal validates the uprate model as a repeatable playbook across the sector.

Uranium enricher Centrus Energy also rallied more than 7%, as Amicucci noted that tech-driven uprate deals increase demand for nuclear fuel — a less obvious, further-down-the-supply-chain beneficiary that doesn't show up in the headlines but matters for the economics of the whole trade.

The risk for investors chasing this trade now is timing and valuation. Constellation just moved 15% in a single session, and nuclear-adjacent names across the board have already run hard this year on AI power demand narratives. Buying into a 15% pop the day after it happens isn't exactly a disciplined entry point, and a pullback in the days ahead wouldn't be surprising as short-term traders take profits.

Evercore's research points to "economically justified" uprates potentially adding 4 to 8 gigawatts of nuclear capacity industry-wide by the mid-2030s — equivalent to several large reactors' worth of power, without the greenfield construction risk that's sunk so many new nuclear projects in the past. That's a multi-year tailwind, not a one-day trade, which argues for patience over chasing the initial pop in the stock.

Watch for pullbacks in Constellation, Vistra or Talen toward pre-announcement levels as a better entry point than today's price. The structural story here — AI demand forcing tech companies to directly fund power infrastructure just to keep the lights on for their own data centers — is still in its early innings, and more deals like this one are almost certainly coming before year-end.