U.S. Nuclear Fleet · National
Supply Dashboard
As of Oct 9, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
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Today's Setup
the board in one read13,804 MW of U.S. nuclear is offline (14.3% of the fleet), up 15 MW from yesterday. Henry Hub gas is $3.03/MMBtu (normal). The grid looks tight tomorrow in CAISO on the demand forecast, where any nuclear loss would bite hardest. Biggest 30-day swing: SPP availability down 34.4 pts.
MW Offline Today
13,804 MW
▲ 15 MW more offline vs. yesterday
124 below 7-day avg · 3,188 below a year ago
% of Fleet Offline
14.3%
13,804 of 96,853 MW installed
Generating Now
83,049 MW
85.7% of installed capacity online
Units Reporting
94
Operating reactors in the daily status report
Outage Overrun
███
How many days past its published date each outage will actually run.
Nobody else publishes this
Ontario (IESO) separate fleet
Ontario detailMW Offline
4,600 MW
37.8% of the Ontario fleet
Units Offline
7 of 16
Bruce, Darlington, Pickering
Delivering
7,520 MW
of 12,160 MW installed
Resolution
1 hour
vs. once-daily for the U.S. fleet
Ontario also appears as its own line on the supply curve and in the outage ranking below. Ontario is reported as a separate fleet and is never added into the U.S. national figures above. IESO grid-operator market data (MW delivered), not NRC percent-power.
Outage overrun is one of three numbers nobody else publishes. The operator files a return-to-service date. This is how many days past it the outage will actually run. No other vendor publishes a number for this at all. It is the Outage Overrun figure above. See who is exposed
National MW Offline
Top Outages by MW Impact
| Unit | Region | Power | MW Offline |
|---|---|---|---|
| Palo Verde 1 | SRP | 0% | 1,311 |
| Susquehanna 1 | PJM | 0% | 1,247 |
| Browns Ferry 1 | TVA | 0% | 1,227 |
| Callaway | MISO | 0% | 1,190 |
| Vogtle 2 | Southern | 0% | 1,152 |
| Salem 1 | PJM | 0% | 1,146 |
| Byron 2 | PJM | 0% | 1,136 |
| Sequoyah 2 | TVA | 0% | 1,126 |
Next 7 Days
From our sourced schedule where we hold a date, model projection beyond.
Seasonal Comparison
Compare seasons by marketSpring and fall refueling peaks repeat every year. This is where the supply swings live.
See this season against prior years, nationally or for one market.