Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Mammoth North Solar | Hardin Solar III |
|---|---|---|
| 400 MW | 250 MW | |
| Solar Photovoltaic | Solar Photovoltaic | |
| Mammoth North, LLC | Hardin Solar Energy III | |
| 1 | 1 | |
| 746.1 GWh | 536.8 GWh | |
| 21.4% (2025) | — | |
| #19 of 7,234 | #76 of 7,234 | |
| 2026-06 | 2026-06 |