Henrietta Peaker
Kings County, California · EIA plant ID 55807 · Operator: GWF Energy LLC
Nameplate98MWSummer 92 MW
Generators2in service
Net generation3GWh12 mo to Aug 2026
Capacity factor0%gas/coal/oil units, summer MW
Heat rate11,513Btu/kWhfossil units, electric fuel, HHV
First online2002Runs as rarely runs
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) |
|---|---|---|---|
| 2002 | 32.8 | 6.7% | 10,442 |
| 2003 | 19.7 | 2.4% | 10,246 |
| 2004 | 11 | 1.4% | 10,412 |
| 2005 | 13 | 1.6% | 10,558 |
| 2006 | 19.2 | 2.4% | 10,296 |
| 2007 | 21 | 2.6% | 10,624 |
| 2008 | 48.1 | 5.7% | 10,352 |
| 2009 | 55.2 | 6.6% | 10,421 |
| 2010 | 15.8 | 1.9% | 10,559 |
| 2011 | 15.9 | 2.0% | 10,730 |
| 2012 | 38.7 | 4.8% | 10,871 |
| 2013 | 54.1 | 6.7% | 10,706 |
| 2014 | 98.2 | 12.1% | 10,663 |
| 2015 | 98.8 | 12.2% | 10,309 |
| 2016 | 32.5 | 4.0% | — |
| 2017 | 38.5 | 4.8% | 11,005 |
| 2018 | 32.9 | 4.1% | 11,264 |
| 2019 | 30.5 | 3.8% | 11,110 |
| 2020 | 30.3 | 3.7% | 11,088 |
| 2021 | 25 | 3.1% | 10,550 |
| 2022 | 48.7 | 6.0% | 10,598 |
| 2023 | 3.5 | 0.4% | 11,124 |
| 2024 | 9.8 | 1.2% | 10,682 |
| 2025 | 3.8 | 0.5% | 11,084 |
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 |
|---|---|---|---|---|---|---|---|---|
| HPP1 | Natural Gas Fired Combustion Turbine | GT | 49 | 46.3 | Jun 2002 | Operating | — | coming soon |
| HPP2 | Natural Gas Fired Combustion Turbine | GT | 49 | 46.1 | Jun 2002 | Operating | — | coming soon |
Owner / operator
Operator: GWF Energy LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| GWF Energy LLC | 100.0% | 98 MW |
Nearby plants
Within 80 km.
| Electrolyte BESS | 99 MW | 0.1 km |
| American Kings Solar, LLC | 128 MW | 0.6 km |
| Henrietta D Energy Storage LLC | 10 MW | 1.2 km |
| RE Kent South, LLC | 20 MW | 1.5 km |
| Slate Hybrid | 440 MW | 1.7 km |
| RE Mustang LLC | 175 MW | 2 km |