- Alphabet’s Google is nearing a multi-year nuclear energy purchase from Constellation Energy worth $1 billion or more, Bloomberg reported on October 5.
- The agreement could be announced this week and would supply carbon-free power for Google’s AI data-center expansion.
- It would mark the latest mega-deal in a race that has already drawn Amazon and Microsoft to nuclear fleets.
The Google Constellation nuclear deal now reportedly taking shape would be the biggest power purchase yet in the tech industry’s scramble for reliable electricity. According to Bloomberg’s reporting, relayed by Reuters, Alphabet is nearing a multi-year agreement to buy nuclear energy from Constellation Energy for $1 billion or more, with an announcement possible as early as this week. Neither Google nor Constellation commented on the report.
If confirmed, the deal would place Google at the front of a fast-moving trend: hyperscalers underwriting existing nuclear reactors to feed the surge in AI computing demand. Constellation, the largest operator of nuclear power plants in the United States, has already signed power agreements with Amazon and Microsoft. A Google deal of this scale would cement nuclear energy as the anchor fuel of the data-center boom — and turn tech giants into some of the most important customers in the power business.
What the reported Google Constellation nuclear deal would cover
Details remain thin while negotiations are ongoing, but the broad shape is clear from the reporting: a multi-year commitment, valued at $1 billion or more, for nuclear-generated electricity to support Google’s operations. Bloomberg Law’s account of the story confirms the same outlines — a multi-year agreement expected as soon as this week, driven by tech companies racing to line up power for the data-center boom.
Constellation’s fleet spans more than 20 reactors across the Midwest and Northeast, giving Google access to some of the largest blocks of around-the-clock carbon-free power available in US wholesale markets. For a company whose data centers run at full tilt day and night, that matters: nuclear plants run at capacity factors above 90 percent, far higher than any other large-scale generation source. One large reactor delivers the same kind of firm output that would otherwise require massive portfolios of intermittent renewables plus storage. The company’s growing string of Constellation Energy tech company power deals — with Amazon, Microsoft, and now reportedly Google — is turning the largest US nuclear fleet into the preferred supplier for the AI economy.
Why hyperscalers keep turning to nuclear
The logic is straightforward. AI workloads have pushed electricity demand from data centers to levels the industry barely imagined five years ago, and tech companies have public carbon-free commitments to keep. Wind and solar are cheap, but they are intermittent — and the batteries needed to firm them around the clock at data-center scale remain expensive. Nuclear offers exactly what a data center needs: steady, carbon-free electrons, 24 hours a day.
The reported Google nuclear power agreement would be the company’s largest yet for supplying the data centers that train and run its AI models — and a sign that Google now treats reactor power as core infrastructure rather than an experiment.
A land grab for the grid’s firmest electrons
Constellation’s previous deals set the template. Microsoft agreed to buy power from the restarted Three Mile Island Unit 1 in Pennsylvania, and Amazon struck agreements tied to nuclear output as well. Each deal locks up a chunk of the limited supply of existing US nuclear generation, raising an obvious question for utilities and regulators: how much firm capacity will be left for everyone else?
That tension is already visible in wholesale markets. Grid operator PJM, which serves the mid-Atlantic region where many of these data centers are being built, has been wrestling with how to procure enough capacity to keep the lights on as large loads arrive. Federal regulators have suspended PJM’s backstop procurement mechanism amid concerns about how data-center demand is reshaping the market. When hyperscalers sign billion-dollar deals directly with generators, they are effectively jumping the queue — securing supply bilaterally while the broader market struggles to adapt.
What it means for the nuclear industry
Beyond the immediate electricity supply, a billion-dollar Google commitment would land as a powerful vote of confidence in the existing US reactor fleet. For years, the story of American nuclear was one of premature retirements: reactors shutting down because cheap natural gas and subsidized renewables made it hard to compete in wholesale markets. Corporate mega-deals are rewriting that arithmetic by attaching a premium, carbon-free buyer directly to the plant.
The ripple effects reach beyond Constellation’s fleet. Every major nuclear power purchase agreement signed by a hyperscaler makes it easier for the next reactor owner to finance a life extension, a power uprate, or even a restart of a shuttered plant. Developers of advanced reactor designs are watching too: if Google, Microsoft and Amazon are willing to pay up for existing reactors today, they are plausible anchor customers for the first small modular reactors tomorrow. The reported deal doesn’t commit Google to any of that — but it strengthens the commercial case that new nuclear can find willing buyers at scale.
What’s next
Watch for the announcement itself this week. If the deal lands, the next questions will be commercial: which reactors supply the power, how long the contract runs, and — most importantly for the market — what price Google agreed to pay. Nuclear power purchase prices are closely watched because they set a benchmark for every utility and corporate buyer weighing reactor restarts or life extensions.
The deeper question is strategic. Google, Microsoft and Amazon are no longer just buying electricity — they are becoming underwriters of the nuclear fleet, providing the long-term revenue certainty that justifies keeping aging reactors online and restarting shuttered ones. Whether that turns out to be a bridge to a new generation of advanced reactors, or simply the biggest corporate energy shopping spree of the decade, will shape the US power system for years to come.
