ERCOT Nuclear Supply
ERCOT Today
as of Sep 14, 2026The Generators in ERCOT
4 units · click any unit for its full record| Unit | Owner | St | MW | Power | MW off | Status | RecordIndividual | Overrun | B2B |
|---|---|---|---|---|---|---|---|---|---|
| South Texas 1 | STP Nuclear Operating | TX | 1,300 | 100.0% | — | At power | ██ | ██ | ██ |
| South Texas 2 | STP Nuclear Operating | TX | 1,280 | 100.0% | — | At power | ██ | ██ | ██ |
| Comanche Peak 1 | Vistra Corp. | TX | 1,209 | 100.0% | — | At power | ██ | ██ | ██ |
| Comanche Peak 2 | Vistra Corp. | TX | 1,197 | 100.0% | — | At power | ██ | ██ | ██ |
Every reactor scored 0-100 on capacity factor, forced-outage days, streak length, refuel and startup speed, so a published date from a top-decile unit is read differently from one from a bottom-decile unit.
- Operational Excellence per unit
- Projected overrun days
- Breaker-to-breaker streaks
- Rank within reactor type and cycle length
ERCOT Outage Pipeline
IndividualWhen every unit in ERCOT comes off line next, on one timeline, with the utility's published dates and our projected ones side by side.
The next eighteen months of outages for this market on a single chart, so overlapping refuelings are obvious before they bite.
- Published + projected start dates
- MW at stake per outage
- Confidence on every date
- Projected overrun days
ERCOT Fleet Operating Record
IndividualHow the 4 reactors in ERCOT actually run, as a fleet: the average Operational Excellence score, forced-outage days per unit, how many are in a qualifying breaker-to-breaker run, and which unit in this market is the most and least reliable.
ERCOT This Season
Full seasonal comparisonEighteen months of MW offline, broken out by market and stacked, so you can see whose supply moved and when.
- Stacked MW-offline history by market
- Per-market forward curve
- Ontario as a parallel fleet
- CSV of any board