Google Leads Big Tech Nuclear Push With 890 MW Uprate Deal

Google is leading a push by major technology companies to expand data-center power supplies through existing U.S. nuclear plants, with an 890-megawatt project designed to add capacity faster than building a new reactor.

Google and Constellation Energy agreed Oct. 6, 2026, to increase output across 11 nuclear units in Illinois, Pennsylvania and New Jersey under a 20-year power purchase agreement. The project represents more than $4.3 billion in investment, with the first uprate expected in 2028 and completion targeted for the early 2030s.

The agreement also includes a separate 15-year contract covering 2,700 megawatts from Constellation’s PJM fleet. The added capacity will support data-center electricity demand while giving nuclear operators long-term contracts tied to plant upgrades and continued operations.

“We’re committed to meeting our growth responsibly by actively investing in clean, reliable power,” Amanda Peterson Corio, Google’s global head of energy and power, said.

Amazon has a separate 20-year agreement with Constellation covering 690 megawatts at Maryland’s Calvert Cliffs plant. About 190 megawatts of additional output is expected to come from an uprate between 2030 and 2032. The project supports more than $3 billion in Constellation investment.

Microsoft’s agreement supports restarting the 835-megawatt Crane Clean Energy Center, formerly Three Mile Island Unit 1. The reactor was retired in 2019.

The strategy comes as global data-center electricity consumption is projected to more than double to approximately 945 terawatt-hours by 2030. Using operating plants can add electricity without developing a new reactor site, although the available scale depends on how many existing units can support meaningful uprates.

A nuclear uprate raises a reactor’s maximum licensed operating power through equipment, measurement or control-system changes. The Nuclear Regulatory Commission must approve each project before the higher output takes effect, leaving technical reviews and regulatory decisions as key steps for the planned expansions.

The Google project is expected to sustain about 4,400 existing jobs and create roughly 7,200 construction jobs during the buildout. Microsoft President Brad Smith summarized the demand behind the company’s nuclear strategy at its shareholder meeting: “The world needs more electricity.”