On 4th June, Meta signed a 20-year deal to buy nuclear power from Constellation’s Clinton plant in Illinois starting mid-2027, once current state subsidies end.

The deal comes amid a surge in power needs due to the growth of AI and data centres; nuclear energy offers a clean, round-the-clock supply.

Constellation may now expand output at Clinton and is exploring building a second reactor at the site, already approved by federal authorities.

The Clinton plant was once at risk of shutdown but survived after a 10-year state subsidy approved in 2017.

This is Meta’s biggest energy deal yet. It’s also seeking up to 4 GW of nuclear capacity for the early 2030s, with over 50 proposals received.

Constellation is in talks with other firms for similar post-subsidy power deals and may close more agreements within a year.

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