Berry Cogen Tanne Hills 18
Kern County, California · EIA plant ID 50622 · Operator: Berry Petroleum Co
Nameplate18MWSummer 16 MW
Generators2in service
Net generation138GWh12 mo to Aug 2026
Capacity factor98%gas/coal/oil units, summer MW
Heat rate5,273Btu/kWhfossil units, electric fuel, HHV
First online1986Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 149.4 | 121.8% | 12,251 |
| 2002 | 128.7 | 104.9% | 5,807 |
| 2003 | 125.3 | 102.1% | 6,092 |
| 2004 | 126.6 | 103.0% | 5,007 |
| 2005 | 123 | 100.3% | 5,007 |
| 2006 | 115.8 | 94.4% | 5,007 |
| 2007 | 120.3 | 98.1% | 5,014 |
| 2008 | 128.6 | 104.6% | 5,021 |
| 2009 | 131 | 106.8% | 5,032 |
| 2010 | 126.4 | 103.1% | 5,032 |
| 2011 | 130.9 | 106.7% | 5,064 |
| 2012 | 124.9 | 101.5% | 5,044 |
| 2013 | 98.5 | 80.3% | 4,999 |
| 2014 | 131.3 | 107.0% | 5,011 |
| 2015 | 132.7 | 108.2% | 5,019 |
| 2016 | 135.1 | 109.9% | 5,333 |
| 2017 | 80.1 | 65.3% | 8,575 |
| 2018 | 90 | 73.4% | 8,198 |
| 2019 | 78.5 | 64.0% | 8,432 |
| 2020 | 140.9 | 100.2% | 5,233 |
| 2021 | 138.5 | 98.8% | 5,283 |
| 2022 | 130.5 | 93.1% | 5,405 |
| 2023 | 124.7 | 88.9% | 5,239 |
| 2024 | 137.7 | 98.0% | 5,249 |
| 2025 | 139.7 | 99.7% | 5,247 |
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 | Natural Gas Fired Combustion Turbine | GT | 9 | 8 | Dec 1986 | Operating | — | coming soon |
| GEN2 | Natural Gas Fired Combustion Turbine | GT | 9 | 8 | Dec 1986 | Operating | — | coming soon |
Owner / operator
Operator: Berry Petroleum Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Berry Petroleum Co | 100.0% | 18 MW |
Nearby plants
Within 80 km.
| Berry Cogen | 39 MW | 0.4 km |
| Chalk Cliff Limited | 46 MW | 1.3 km |
| Taft 26C Cogen | 12 MW | 3.8 km |
| Wheeler Ridge | 5 MW | 11.4 km |
| Maricopa West Solar PV, LLC | 20 MW | 11.6 km |
| Castor Solar | 2 MW | 14.3 km |