U.S. Nuclear Fleet · PJM + 3 more

Supply Dashboard

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

Build your own market

Pick the reactors you actually care about and every board on this site narrows to them.

Filtered to PJM MISO TVA FPL Show all markets

Today's Setup

the board in one read

3,605 MW of PJM + 3 more is offline (6.4% of the fleet), up 287 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: TVA availability down 15.0 pts.

MW Offline Today

3,605 MW

▲ 287 MW more offline vs. yesterday

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

% of Fleet Offline

6.4%

3,605 of 56,033 MW installed

Generating Now

52,428 MW

93.6% 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

3,653 MW

30% 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 PJM, MISO, TVA, FPL filter applies to the lists below and to MW offline by market.

Top Outages by MW Impact

Unit	Region	Power	MW Offline
Browns Ferry 1	TVA	0%	1,227
North Anna 2	PJM	0%	943
Davis-Besse	PJM	0%	894
D.C. Cook 1	PJM	71%	293

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.