Heber Solar
Imperial County, California · EIA plant ID 58398 · Operator: Axium US Solar Holdings LLC
Nameplate11MWSummer 10 MW
Generators1in service
Net generation24GWh12 mo to Dec 2025
Capacity factor27%solar units, summer MW
Heat rate—thermal plants only
First online2014
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) |
|---|---|---|---|
| 2014 | 18.9 | 32.1% | — |
| 2015 | 26.5 | 30.2% | — |
| 2016 | 25.9 | 29.5% | — |
| 2017 | 26.1 | 29.8% | — |
| 2018 | 25.6 | 29.3% | — |
| 2019 | 26 | 29.7% | — |
| 2020 | 24.5 | 27.9% | — |
| 2021 | 25.6 | 29.2% | — |
| 2022 | 25.8 | 29.4% | — |
| 2023 | 25.5 | 29.1% | — |
| 2024 | 24.6 | 28.0% | — |
| 2025 | 24.1 | 27.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | PV | 10.9 | 10 | May 2014 | Operating | — | coming soon |
Owner / operator
Operator: Axium US Solar Holdings LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Axium US Solar Holdings LLC | 100.0% | 11 MW |
Nearby plants
Within 80 km.
| Second Imperial Geothermal | 75 MW | 0.5 km |
| Heber Geothermal | 92 MW | 2.1 km |
| Mount Signal Solar Farm V | 252 MW | 4.5 km |
| Imperial Valley Solar, LLC | 200 MW | 6.3 km |
| Wistaria Ranch Solar | 107 MW | 8.4 km |
| Mount Signal Solar Farm II | 154 MW | 9.6 km |