Google signs 20-year deal with Constellation to add 890 megawatts of nuclear power
The tech company will anchor upgrades at six existing reactors instead of new plants, a week after Constellation struck a similar deal with Amazon.
Google will pay for upgrades at six existing nuclear plants in Illinois, Pennsylvania and New Jersey under a 20-year agreement with Constellation Energy that will add 890 megawatts of power to the eastern United States grid by the end of 2032.
The deal enables more than $4.3 billion in investment in so-called uprates, which modernize turbines, steam generators and digital controls to squeeze more power from operating reactors. The companies said uprates avoid the long timelines and grid-connection bottlenecks of building new plants. The added capacity will feed PJM, the grid operator serving 13 states and 67 million people.
Google also signed a 15-year agreement to buy power from an additional 2,700 megawatts of Constellation's existing capacity. The deal follows a 20-year agreement Constellation announced with Amazon last week, and Constellation's shares rose more than 14% Tuesday morning.
Google's electricity demand rose 37% in 2025 as it built out data centers, though it cut its direct and energy-related emissions by 2%, according to its latest environmental report. The company acknowledged that its goal of running on carbon-free energy around the clock is becoming harder to meet.
"Our agreement with Constellation to fund nuclear reactor uprates will strengthen the PJM grid," said Amanda Peterson Corio, Google's global head of energy and power.
This brief is based on reporting by Mark Segal, published Oct. 6, 2026, in ESG Today. Read the original: https://www.esgtoday.com/constellation-signs-20-year-deal-with-google-to-unlock-890-mw-of-new-nuclear-capacity/
This article was produced with the assistance of AI tools and reviewed by an editor before publication.
