Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Elk River | Marshalltown |
|---|---|---|
| 191.3 MW | 189 MW | |
| Natural Gas Fired Combustion Turbine | Natural Gas Fired Combustion Turbine | |
| Great River Energy | Interstate Power and Light Co | |
| 4 | 3 | |
| 145.3 GWh | 79.0 GWh | |
| 7.4% (2025) | 4.8% (2024) | |
| #252 of 825 | #253 of 825 | |
| 2026-06 | 2024-12 |