Oak Creek Energy Systems I
Kern County, California · EIA plant ID 50754 · Operator: Terra-Gen Operating Co LLC
Nameplate35MWSummer 35 MW
Generators4in service
Net generation57GWh12 mo to Dec 2025
Capacity factor19%wind units, summer MW
Heat rate—thermal plants only
First online1982
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), wind 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 | 96.6 | 32.0% | — |
| 2002 | 103.7 | 34.3% | — |
| 2003 | 102.6 | 33.9% | — |
| 2004 | 97.6 | 32.2% | — |
| 2005 | 96.1 | 31.8% | — |
| 2006 | 97.1 | 32.1% | — |
| 2007 | 105.2 | 34.8% | — |
| 2008 | 100.6 | 33.2% | — |
| 2009 | 88.8 | 29.4% | — |
| 2010 | 87.5 | 29.0% | — |
| 2011 | 68.4 | 22.6% | — |
| 2012 | 65.5 | 21.6% | — |
| 2013 | 62.7 | 20.8% | — |
| 2014 | 55.5 | 18.4% | — |
| 2015 | 54.5 | 18.1% | — |
| 2016 | 65.7 | 21.7% | — |
| 2017 | 62.3 | 20.6% | — |
| 2018 | 65 | 21.5% | — |
| 2019 | 58.5 | 19.4% | — |
| 2020 | 62.2 | 20.5% | — |
| 2021 | 68.3 | 22.6% | — |
| 2022 | 55.6 | 18.4% | — |
| 2023 | 37.8 | 12.5% | — |
| 2024 | 54.5 | 18.0% | — |
| 2025 | 57.3 | 18.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Onshore Wind Turbine | WT | 3.5 | 3.5 | Jun 1982 | Operating | — | nordtank NTK 75/15 |
| GEN2 | Onshore Wind Turbine | WT | 4.2 | 4.2 | Dec 1993 | Operating | — | micon M750-400/100 |
| GEN3 | Onshore Wind Turbine | WT | 23.1 | 23.1 | Jun 1999 | Operating | — | micon M750-400/100 |
| GEN4 | Onshore Wind Turbine | WT | 3.7 | 3.7 | Jun 1999 | Operating | — | micon M750-400/100 |
| unk | Onshore Wind Turbine | WT | 150 | 150 | planned Dec 2010 | not_current | — | coming soon |
Owner / operator
Operator: Terra-Gen Operating Co LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Terra-Gen Operating Co LLC | 100.0% | 35 MW |
Nearby plants
Within 80 km.
| Mojave 16/17/18 BESS | 77 MW | 0.1 km |
| Voyager Wind I | 131 MW | 0.6 km |
| Mojave 16 | 89 MW | 1.1 km |
| Sagebrush Solar 2 ESS 40 | 40 MW | 1.3 km |
| Sagebrush Solar 2 ESS 59 | 59 MW | 1.3 km |
| Sagebrush ESS | 80 MW | 1.3 km |