Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Devil Canyon | Mammoth Pool |
|---|---|---|
| Capacity | 276.2 MW | 190 MW |
| Technology | Conventional Hydroelectric | Conventional Hydroelectric |
| Operator | California Dept. of Water Resources | Southern California Edison Co |
| Operating units | 4 | 2 |
| Latest 12-month generation | 854.9 GWh | 593.9 GWh |
| Latest complete-year capacity factor | 32.6% (2025) | 28.0% (2025) |
| National technology rank | #51 of 1,349 | #73 of 1,349 |
| Latest EIA report | 2026-04 | 2026-04 |