Live Fleet Status
U.S. Nuclear Supply Map
Every operating reactor, sized by capacity, colored by live status. As of Sep 15, 2026.
MW Offline
3,458 MW
5.5% of fleet
Generating
59,418 MW
62 reactors
Full Outages
3
units at 0% power
Derated
6
units below 98%
Fleet Map
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Outage
Full power
Derated = below 98% · circle size = capacity (MWe) · units at a shared site are fanned apart
Market offline
share of each ISO/RTO's nuclear offline · hover a region for detail