Ironwood Solar LLC
Riverside County, California · EIA plant ID 58513 · Operator: Altus Power America Management, LLC
Nameplate4MWSummer 4 MW
Generators1in service
Net generation7GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2012
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) |
|---|---|---|---|
| 2013 | 6 | 17.2% | — |
| 2014 | 6.2 | 17.7% | — |
| 2015 | 4.8 | 13.7% | — |
| 2016 | 8.6 | 24.6% | — |
| 2017 | 9.1 | 25.9% | — |
| 2018 | 9.5 | 27.0% | — |
| 2019 | 9.3 | 26.6% | — |
| 2020 | 1 | 2.7% | — |
| 2021 | 7 | 20.1% | — |
| 2022 | 9.2 | 26.3% | — |
| 2023 | 8.2 | 23.5% | — |
| 2024 | 7.5 | 21.3% | — |
| 2025 | 7.3 | 20.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 937 | Solar Photovoltaic | PV | 4 | 4 | Apr 2012 | Operating | — | coming soon |
Owner / operator
Operator: Altus Power America Management, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Altus Power America Management, LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| SunEdison Ironwood State Prison | 1 MW | 0.3 km |
| Chuckawalla Solar | 4 MW | 0.4 km |
| Chuckawalla Valley State Prison | 1 MW | 1.3 km |
| Crimson | 350 MW | 9.6 km |
| Genesis Solar Energy Project | 250 MW | 13.4 km |
| Desert Quartzite | 450 MW | 15.3 km |