The Operating Record
Breaker-to-Breaker Registry
A breaker-to-breaker run is one refueling outage to the next with no unplanned shutdown in
between. It is the cleanest single read on whether a reactor is well run.
Who is running clean, and for how long
Individual · $165/mo
Continuous days on line for every reactor, which ones are inside a qualifying breaker-to-breaker run right now, how many they have completed, and how long since each one last tripped.
- Current streak for all 94 units
- Qualifying runs and champions
- Days since the last reactor trip
- Completed run history per unit
Current Runs · Duke Progress + 3 more
alphabetical · 26 units| # | Unit | Market | MW | Streak and trip record Individual |
|---|---|---|---|---|
| · | Arkansas Nuclear 1 | MISO | 826 | █████ |
| · | Arkansas Nuclear 2 | MISO | 982 | █████ |
| · | Browns Ferry 1 | TVA | 1,227 | █████ |
| · | Browns Ferry 2 | TVA | 1,208 | █████ |
| · | Browns Ferry 3 | TVA | 1,227 | █████ |
| · | Brunswick 1 | Duke Progress | 938 | █████ |
| · | Brunswick 2 | Duke Progress | 932 | █████ |
| · | Callaway | MISO | 1,190 | █████ |
| · | Clinton | MISO | 1,079 | █████ |
| · | Diablo Canyon 1 | CAISO | 1,122 | █████ |
| · | Diablo Canyon 2 | CAISO | 1,118 | █████ |
| · | Fermi 2 | MISO | 1,141 | █████ |
| · | Grand Gulf 1 | MISO | 1,397 | █████ |
| · | Harris 1 | Duke Progress | 964 | █████ |
| · | Monticello | MISO | 617 | █████ |
| · | Point Beach 1 | MISO | 589 | █████ |
| · | Point Beach 2 | MISO | 597 | █████ |
| · | Prairie Island 1 | MISO | 521 | █████ |
| · | Prairie Island 2 | MISO | 519 | █████ |
| · | River Bend 1 | MISO | 968 | █████ |
| · | Robinson 2 | Duke Progress | 759 | █████ |
| · | Sequoyah 1 | TVA | 1,148 | █████ |
| · | Sequoyah 2 | TVA | 1,126 | █████ |
| · | Waterford 3 | MISO | 1,087 | █████ |
| · | Watts Bar 1 | TVA | 1,123 | █████ |
| · | Watts Bar 2 | TVA | 1,122 | █████ |
Toward B2B is progress through a full fuel cycle: a run only qualifies once the unit has gone
from one refueling outage to the next without an unplanned shutdown, so the threshold is set per unit rather
than as one fleet-wide number. Days since trip spans refuelings and is the longer-horizon read.
A long streak is not the same as a firm date
Pro · $499/mo
A unit can run clean for six hundred days and still hand back an outage two weeks late. The overrun projection is the number that says which.
- Projected overrun days per unit
- Scored against its own outage history
- MW-days the market has not priced