Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Taum Sauk | Smithland Hydroelectric Plant |
|---|---|---|
| 408 MW | 75.9 MW | |
| Hydroelectric Pumped Storage | Conventional Hydroelectric | |
| Union Electric Co - (MO) | American Mun Power-Ohio, Inc | |
| 2 | 3 | |
| 390.2 GWh | 433.6 GWh | |
| — | 50.6% (2025) | |
| #17 of 39 | #197 of 1,349 | |
| 2026-06 | 2026-06 |