U.S. Nuclear Fleet · National
Supply Dashboard
As of Jul 17, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.
Today's Setup
the board in one read306 MW of U.S. nuclear is offline (0.3% of the fleet), down 76 MW from yesterday. Henry Hub gas is $2.83/MMBtu (cheap), so a supply loss has less price upside than usual. The grid looks tight tomorrow in SPP (and 2 other ISOs) on the demand forecast, where any nuclear loss would bite hardest. Biggest 30-day swing: Florida Power & Light (FPL) availability up 1.9 pts.
MW Offline Today
306 MW
▼ 76 MW returned vs. yesterday
509 below 7-day avg · 1,264 below a year ago
% of Fleet Offline
0.3%
306 of 96,850 MW installed
Generating Now
96,544 MW
99.7% of installed capacity online
Units Reporting
94
Operating reactors in the daily status report
National MW Offline
Top Outages by MW Impact
| Unit | Region | Power | MW Offline |
|---|---|---|---|
| LaSalle 2 | PJM | 86% | 159 |
| Perry 1 | PJM | 96% | 50 |
| LaSalle 1 | PJM | 97% | 34 |
| Waterford 3 | MISO | 97% | 33 |
| Monticello | MISO | 95% | 31 |
Next 7 Days
No outages begin in the next 7 days.
Next outage projection is part of Individual
From the published schedule where available, model projection beyond.
Seasonal Comparison
MW offline by time of year, last 4 yearsSpring and fall refueling peaks repeat every year. This is where the supply swings live.