Google has contracted for 3,590 megawatts of power from Constellation Energy, the country’s largest nuclear operator, with about a quarter of that coming from new nuclear capacity. The centerpiece is a 20-year agreement for 890 megawatts of new output created by upgrading 11 existing Constellation reactors in Illinois, Pennsylvania and New Jersey, which enables more than $4.3 billion in new investment, Reuters reported. That added capacity, roughly the output of one new reactor, reaches the PJM grid in phases from 2028 through 2032, according to Axios.
A separate 15-year agreement covers another 2,700 megawatts from Constellation’s existing fleet, and Constellation will deploy Google Cloud and Gemini under a five-year technology deal. Constellation shares jumped about 12% Tuesday. The deal comes on the heels of Amazon’s own 20-year contract tied to Constellation’s Calvert Cliffs plant in Maryland, more proof that the AI buildout is increasingly being powered by reactors that already exist.