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Google signed for 890 megawatts from 11 old nuclear plants. Nobody builds new ones.

Google signed a 20-year deal to buy 890 megawatts of added nuclear capacity from Constellation, the two companies announced on Tuesday.

ERP LEADERS news desk · · First reported by Google/Constellation announcement 6 October 2026; The Register (Tobias Mann) · Edition no. 30
Photo: Bill Tracey, w:Flickr user iluvcocacola/Wikimedia, CC BY 2.0 · original

The capacity comes from upgrading at least 11 plants Constellation already runs in Illinois, Pennsylvania and New Jersey, with new turbines, steam generators and control systems, The Register reported on Wednesday. No new plant is built under the deal.

Constellation pays for the upgrades, more than $4.3 billion of new investment. The first upgraded plant should send power in 2028. A second, 15-year deal adds 2,700 megawatts from Constellation's existing plants. Neither company disclosed a price.

Google said it is "actively investing in clean, reliable power that brings new capacity to our nation's grids."

Of the 3,590 megawatts Google contracted, 890 are added capacity, about a quarter, and only once the upgrades are finished. The other 2,700 come from plants that already feed the grid, so that purchase adds no generating capacity. The announcement does not say who bought that power before.

Does anything in your own cloud contract say who pays when your provider's power costs change?

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