Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Edward C Hyatt | W R Gianelli |
|---|---|---|
| 644.1 MW | 424 MW | |
| Conventional Hydroelectric, Hydroelectric Pumped Storage | Hydroelectric Pumped Storage | |
| California Dept. of Water Resources | California Dept. of Water Resources | |
| 6 | 8 | |
| 2.08 TWh | 224.3 GWh | |
| 34.6% (2025) | — | |
| #39 of 1,349 | #15 of 39 | |
| 2026-06 | 2026-06 |