Salton Sea Power Gen Co - Unit 4
Imperial County, California · EIA plant ID 54996 · Operator: CalEnergy Operating Corporation
Nameplate48MWSummer 44 MW
Generators1in service
Net generation321GWh12 mo to Dec 2025
Capacity factor83%geothermal units, summer MW
Heat rate—thermal plants only
First online1996
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 | 300.8 | 101.0% | — |
| 2002 | 331.3 | 111.2% | — |
| 2003 | 273 | 91.6% | — |
| 2004 | 343.7 | 115.1% | — |
| 2005 | 347.5 | 116.7% | — |
| 2006 | 342.9 | 115.1% | — |
| 2007 | 334.1 | 112.2% | — |
| 2008 | 344 | 115.2% | — |
| 2009 | 360 | 120.9% | — |
| 2010 | 355 | 119.2% | — |
| 2011 | 344 | 115.5% | — |
| 2012 | 304.4 | 73.0% | — |
| 2013 | 325 | 78.1% | — |
| 2014 | 295.5 | 76.7% | — |
| 2015 | 329.9 | 85.6% | — |
| 2016 | 263 | 68.0% | — |
| 2017 | 313.5 | 81.3% | — |
| 2018 | 299.4 | 77.7% | — |
| 2019 | 290.2 | 75.3% | — |
| 2020 | 222.6 | 57.6% | — |
| 2021 | 275.3 | 71.4% | — |
| 2022 | 323.5 | 83.9% | — |
| 2023 | 319.7 | 82.9% | — |
| 2024 | 179.8 | 46.5% | — |
| 2025 | 321.2 | 83.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 4100 | Geothermal | ST | 47.5 | 44 | May 1996 | Operating | — | coming soon |
Owner / operator
Operator: CalEnergy Operating Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| CE Generation | 100.0% | 48 MW |
Nearby plants
Within 80 km.
| Salton Sea Power Gen Co - Unit 3 | 54 MW | 0.1 km |
| Salton Sea Power LLC - Unit 5 | 58 MW | 0.4 km |
| Salton Sea Power Gen Co - Unit 2 | 20 MW | 0.7 km |
| Salton Sea Power Gen Co Unit 1 | 10 MW | 0.8 km |
| Vulcan-BN Geothermal Power Company | 40 MW | 2.2 km |
| Del Ranch Company | 46 MW | 2.3 km |