NukeGryd
The Operating Record

Reliability Board

44 operating reactors in PJM, Duke Progress, SRP, SPP, FPL, scored on how they actually run and ranked against each other. Built from 27 years of daily reactor records.
Filtered to PJM Duke Progress SRP SPP FPL Show all markets
See how every reactor actually runs Individual · $165/mo

One 0-100 score per unit, with sub-scores for reliability, efficiency and discipline, ranked against the fleet and against comparable units rather than against the whole fleet.

  • 44 units scored and ranked
  • Capacity factor and forced-outage days
  • Breaker-to-breaker streaks
  • Ranked against comparable units, not the whole fleet

Fleet Ranking · PJM + 4 more

# Unit Market MW Reactor type Operating record Individual
· Beaver Valley 1 PJM 907 PWR █████
· Beaver Valley 2 PJM 901 PWR █████
· Braidwood 1 PJM 1,183 PWR █████
· Braidwood 2 PJM 1,152 PWR █████
· Brunswick 1 Duke Progress 938 BWR █████
· Brunswick 2 Duke Progress 932 BWR █████
· Byron 1 PJM 1,164 PWR █████
· Byron 2 PJM 1,136 PWR █████
· Calvert Cliffs 1 PJM 884 PWR █████
· Calvert Cliffs 2 PJM 861 PWR █████
· Cooper SPP 772 BWR █████
· D.C. Cook 1 PJM 1,009 PWR █████
· D.C. Cook 2 PJM 1,168 PWR █████
· Davis-Besse PJM 894 PWR █████
· Dresden 2 PJM 902 BWR █████
· Dresden 3 PJM 895 BWR █████
· Harris 1 Duke Progress 964 PWR █████
· Hope Creek 1 PJM 1,172 BWR █████
· LaSalle 1 PJM 1,131 BWR █████
· LaSalle 2 PJM 1,134 BWR █████
· Limerick 1 PJM 1,120 BWR █████
· Limerick 2 PJM 1,122 BWR █████
· North Anna 1 PJM 948 PWR █████
· North Anna 2 PJM 943 PWR █████
· Palo Verde 1 SRP 1,311 PWR █████
· Palo Verde 2 SRP 1,314 PWR █████
· Palo Verde 3 SRP 1,312 PWR █████
· Peach Bottom 2 PJM 1,265 BWR █████
· Peach Bottom 3 PJM 1,285 BWR █████
· Perry 1 PJM 1,240 BWR █████
· Quad Cities 1 PJM 908 BWR █████
· Quad Cities 2 PJM 911 BWR █████
· Robinson 2 Duke Progress 759 PWR █████
· Saint Lucie 1 FPL 981 PWR █████
· Saint Lucie 2 FPL 987 PWR █████
· Salem 1 PJM 1,146 PWR █████
· Salem 2 PJM 1,142 PWR █████
· Surry 1 PJM 838 PWR █████
· Surry 2 PJM 838 PWR █████
· Susquehanna 1 PJM 1,247 BWR █████
· Susquehanna 2 PJM 1,247 BWR █████
· Turkey Point 3 FPL 837 PWR █████
· Turkey Point 4 FPL 844 PWR █████
· Wolf Creek 1 SPP 1,177 PWR █████
Rel / Eff / Disc are the three sub-scores behind the composite: whether a unit stays on line, whether it uses fuel and outage time well, and whether it comes back cleanly. Scores recomputed today; the underlying daily reactor record updates every morning. Click any column heading to re-rank.

By Market

how a reactor in each market typically behaves
MarketUnitsGWAvg score Forced d / unitB2B championsAvg overrun BestWeakest
PJM 31 32.7 ██ ██ ██ ██ ██ ██
SPP 2 1.9 ██ ██ ██ ██ ██ ██
SRP Non-ISO 3 3.9 ██ ██ ██ ██ ██ ██
FPL Non-ISO 4 3.6 ██ ██ ██ ██ ██ ██
Duke Progress Non-ISO 4 3.6 ██ ██ ██ ██ ██ ██
Averages are unweighted across the units in each market. Capacity weighting would let two large reactors answer for a whole market; this column answers "how does a unit here typically behave", which is the question the heading asks.
A good record is not the same as a firm date Pro · $499/mo

The reliability score says how a unit behaves. The risk radar says what that behavior is about to cost: projected overrun days on every upcoming outage, and the megawatt-days the market has not priced.

  • Projected overrun per unit
  • Forced-outage exposure screen
  • MW-days at risk by market
  • Scored against its own history