Microsoft has 3 nuclear power agreements in our register. 885 MW are under signed contracts, 0 MW are in pre-agreement or development, and 0 MW are non-binding MOUs, letters of intent or options.
1 agreement did not disclose capacity and add nothing to the totals.
Status: Pre-restart licensing. NRC approved fuel receipt in July 2026 and issued its environmental finding in Sept 2026; operating authority still pending.
Constellation pulled the restart target forward from 2028 to 2027. A DOE loan of $1B finances the restart.
Status: Announced 2023; no later update found.
Nuclear attributes matched hourly to up to 35% of the data center's supply. No MW or term disclosed.
Status: Under construction since July 2025; state radioactive-materials and air licenses issued June 2026.
At least 50 MW after a one-year ramp. Helion has signaled full output could slip toward 2030.
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Signed contracts are PPAs, offtake agreements or tariff subscriptions with stated terms. Pre-agreement and development covers prepayments, deposits and development funding tied to future supply. MOUs, letters of intent and options are non-binding. Full methodology. Other buyers: Google · Amazon · Meta.