U.S. Nuclear Fleet · PJM + 3 more

Supply Dashboard

As of Sep 16, 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 ERCOT SRP FPL Show all markets

Today's Setup

the board in one read

2,059 MW of PJM + 3 more is offline (4.5% of the fleet), up 40 MW from yesterday. Henry Hub gas is $2.81/MMBtu (cheap), so a supply loss has less price upside than usual. No ISO is forecast tight tomorrow, so losses would be largely absorbed. Biggest 30-day swing: PJM availability down 5.3 pts.

MW Offline Today

2,059 MW

▲ 40 MW more offline vs. yesterday

1,151 above 7-day avg · 330 above a year ago

% of Fleet Offline

4.5%

2,059 of 45,264 MW installed

Generating Now

43,205 MW

95.5% 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

3,640 MW

29.9% of the Ontario fleet

Units Offline

4 of 16

Bruce, Darlington, Pickering

Delivering

8,520 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

U.S. total, all markets. The PJM, ERCOT, SRP, FPL filter applies to the lists below and to MW offline by market.

Top Outages by MW Impact

Unit	Region	Power	MW Offline
North Anna 2	PJM	0%	943
Davis-Besse	PJM	0%	894

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.