U.S. Nuclear Fleet · FPL + 4 more

Supply Dashboard

As of Sep 17, 2026 · Updated every morning from the NRC Daily Power Reactor Status Report.

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Filtered to FPL Duke Progress CAISO SPP Duke Carolinas Show all markets

Today's Setup

the board in one read

1,380 MW of FPL + 4 more is offline (7.4% of the fleet), up 20 MW from yesterday. Henry Hub gas is $2.97/MMBtu (normal). No ISO is forecast tight tomorrow, so losses would be largely absorbed. Biggest 30-day swing: Duke Carolinas availability down 15.7 pts.

MW Offline Today

1,380 MW

▲ 20 MW more offline vs. yesterday

932 above 7-day avg · 129 above a year ago

% of Fleet Offline

7.4%

1,380 of 18,656 MW installed

Generating Now

17,276 MW

92.6% of installed capacity online

Units Reporting

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 detail

MW Offline

3,607 MW

29.7% of the Ontario fleet

Units Offline

4 of 16

Bruce, Darlington, Pickering

Delivering

8,507 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

U.S. total, all markets. The FPL, Duke Progress, CAISO, SPP, Duke Carolinas filter applies to the lists below and to MW offline by market.

Top Outages by MW Impact

Unit	Region	Power	MW Offline
McGuire 1	Duke Carolinas	0%	1,158

Next 7 Days

See the full forward curve

From our sourced schedule where we hold a date, model projection beyond.

Seasonal Comparison

Compare seasons by market

Spring 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.