Heber Geothermal
Imperial County, California · EIA plant ID 54689 · Operator: ORCAL Geothermal, Inc
×59 MW geothermal retired since 2020 (latest Aug 2023)
Nameplate92MWSummer 64 MW
Generators5in service
Net generation376GWh12 mo to Dec 2025
Capacity factor68%geothermal units, summer MW
Heat rate—thermal plants only
First online2006
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), geothermal 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) |
|---|---|---|---|
| 2001 | 317.6 | 80.6% | — |
| 2002 | 277.3 | 70.4% | — |
| 2003 | 326 | 82.7% | — |
| 2004 | 323.9 | 81.9% | — |
| 2005 | 324.8 | 82.4% | — |
| 2006 | 343.6 | 80.8% | — |
| 2007 | 344.7 | 77.1% | — |
| 2008 | 367.2 | 82.0% | — |
| 2009 | 363.7 | 81.4% | — |
| 2010 | 333 | 74.5% | — |
| 2011 | 329.4 | 73.7% | — |
| 2012 | 320.8 | 71.6% | — |
| 2013 | 295.5 | 66.1% | — |
| 2014 | 265 | 66.5% | — |
| 2015 | 321.9 | 80.8% | — |
| 2016 | 355.4 | 88.9% | — |
| 2017 | 310.7 | 78.0% | — |
| 2018 | 312.4 | 58.0% | — |
| 2019 | 338.8 | 71.2% | — |
| 2020 | 332.8 | 69.8% | — |
| 2021 | 328 | 69.0% | — |
| 2022 | 145.3 | 30.6% | — |
| 2023 | 250.1 | 52.1% | — |
| 2024 | 384.9 | 69.0% | — |
| 2025 | 376.3 | 67.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | Geothermal | BT | 3.5 | 3 | Jun 2006 | Operating | — | coming soon |
| 4 | Geothermal | BT | 19 | 12.5 | Jan 2018 | Operating | — | coming soon |
| OEC1 | Geothermal | BT | 26.5 | 18 | Apr 2023 | Operating | — | coming soon |
| OEC11 | Geothermal | BT | 16 | 12 | Sep 2023 | Operating | — | coming soon |
| OEC2 | Geothermal | BT | 26.5 | 18 | Apr 2023 | Operating | — | coming soon |
| 1 | Geothermal | ST | 52 | 34.3 | Jun 1985 | Retired Mar 2023 | — | coming soon |
| 2 | Geothermal | BT | 7 | 4.5 | Jun 2006 | Retired Aug 2023 | — | coming soon |
Owner / operator
Operator: ORCAL Geothermal, Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Ormat Nevada Inc | 100.0% | 92 MW |
Nearby plants
Within 80 km.
| Second Imperial Geothermal | 75 MW | 1.6 km |
| Heber Solar | 11 MW | 2.1 km |
| Mount Signal Solar Farm V | 252 MW | 6.1 km |
| Imperial Valley Solar, LLC | 200 MW | 8.1 km |
| El Centro Hybrid | 388 MW | 10 km |
| Sol Orchard El Centro PV | 20 MW | 10.2 km |