Second Imperial Geothermal
Imperial County, California · EIA plant ID 54111 · Operator: ORCAL Geothermal, Inc
×48 MW geothermal retired since 2020 (latest Oct 2022)
Nameplate75MWSummer 52 MW
Generators4in service
Net generation275GWh12 mo to Dec 2025
Capacity factor60%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 | 321.5 | 73.7% | — |
| 2002 | 319.9 | 70.0% | — |
| 2003 | 331.5 | 72.5% | — |
| 2004 | 298 | 65.0% | — |
| 2005 | 287.7 | 62.9% | — |
| 2006 | 298.6 | 50.0% | — |
| 2007 | 317 | 53.1% | — |
| 2008 | 314.3 | 52.5% | — |
| 2009 | 253.3 | 42.4% | — |
| 2010 | 242.5 | 40.6% | — |
| 2011 | 251.8 | 42.1% | — |
| 2012 | 243.3 | 32.9% | — |
| 2013 | 222.9 | 34.9% | — |
| 2014 | 226.2 | 47.1% | — |
| 2015 | 204.7 | 42.6% | — |
| 2016 | 165.5 | 34.4% | — |
| 2017 | 144.3 | 30.1% | — |
| 2018 | 226.7 | 47.2% | — |
| 2019 | 217 | 38.2% | — |
| 2020 | 205.2 | 36.0% | — |
| 2021 | 187.3 | 33.0% | — |
| 2022 | 142.8 | 27.5% | — |
| 2023 | 326.6 | 71.6% | — |
| 2024 | 302.3 | 66.1% | — |
| 2025 | 275.2 | 60.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GE13 | Geothermal | BT | 16 | 12 | Jan 2006 | Operating | — | coming soon |
| GEN14 | Geothermal | BT | 16 | 12 | Apr 2008 | Operating | — | coming soon |
| OEC1 | Geothermal | BT | 26.5 | 17.5 | Nov 2022 | Operating | — | coming soon |
| OEC2 | Geothermal | BT | 16 | 10.6 | Nov 2022 | Operating | — | coming soon |
| GEN13 | Geothermal | BT | 16 | 4 | planned Jan 2006 | not_current | — | coming soon |
| GE10 | Geothermal | BT | 4.5 | 3.8 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GE11 | Geothermal | BT | 4.5 | 3.8 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GE12 | Geothermal | BT | 4.5 | 3.8 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN1 | Geothermal | BT | 3.5 | 3 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN2 | Geothermal | BT | 3.5 | 3 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN3 | Geothermal | BT | 3.5 | 3 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN4 | Geothermal | BT | 3.5 | 3 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN5 | Geothermal | BT | 3.5 | 3 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN6 | Geothermal | BT | 3.5 | 3 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN7 | Geothermal | BT | 4.5 | 3.8 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN8 | Geothermal | BT | 4.5 | 3.8 | Jun 1993 | Retired Oct 2022 | — | coming soon |
| GEN9 | Geothermal | BT | 4.5 | 3.8 | Jun 1993 | Retired Oct 2022 | — | 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).
| Second Imperial Geothermal Company | 57.0% | 43 MW |
| Ormat Nevada Inc | 43.0% | 32 MW |
Nearby plants
Within 80 km.
| Heber Solar | 11 MW | 0.5 km |
| Heber Geothermal | 92 MW | 1.6 km |
| Mount Signal Solar Farm V | 252 MW | 4.9 km |
| Imperial Valley Solar, LLC | 200 MW | 6.8 km |
| Wistaria Ranch Solar | 107 MW | 8.9 km |
| El Centro Hybrid | 388 MW | 9.8 km |