Cimarron Solar Facility
Colfax County, New Mexico · EIA plant ID 57243 · Operator: Southern Power Co
Nameplate31MWSummer 31 MW
Generators1in service
Net generation60GWh12 mo to Dec 2025
Capacity factor22%solar units, summer MW
Heat rate—thermal plants only
First online2010
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), solar units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2010 | 8.9 | 39.7% | — |
| 2011 | 68 | 25.7% | — |
| 2012 | 69.9 | 26.0% | — |
| 2013 | 66.6 | 24.8% | — |
| 2014 | 62.4 | 23.3% | — |
| 2015 | 60.8 | 22.7% | — |
| 2016 | 63.7 | 24.2% | — |
| 2017 | 61 | 23.2% | — |
| 2018 | 63.3 | 24.1% | — |
| 2019 | 61.7 | 23.0% | — |
| 2020 | 62.5 | 23.3% | — |
| 2021 | 63.3 | 23.6% | — |
| 2022 | 60.7 | 22.6% | — |
| 2023 | 57 | 21.3% | — |
| 2024 | 44.6 | 16.6% | — |
| 2025 | 60.3 | 22.5% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| CIM1 | Solar Photovoltaic | PV | 30.6 | 30.6 | Dec 2010 | Operating | — | coming soon |
Owner / operator
Operator: Southern Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| SP Cimmaron I, LLC | 100.0% | 31 MW |
Nearby plants
Within 80 km.
| Springer Solar 1 | 1 MW | 8.6 km |
| Syncarpha Eagle Nest | 1 MW | 58 km |
| Angel Fire Energy Facility | 11 MW | 58 km |