Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Smith Mountain | Muddy Run |
|---|---|---|
| 547.5 MW | 1,072 MW | |
| Hydroelectric Pumped Storage, Conventional Hydroelectric | Hydroelectric Pumped Storage | |
| Appalachian Power Co | Constellation Power, Inc | |
| 5 | 8 | |
| -124.9 GWh | 1.94 TWh | |
| 3.7% (2023) | — | |
| #44 of 1,349 | #7 of 39 | |
| 2026-06 | 2026-06 |