Larkspur Energy Facility
San Diego County, California · EIA plant ID 55542 · Operator: Diamond Generating Corporation
Nameplate100MWSummer 92 MW
Generators2in service
Net generation23GWh12 mo to Dec 2025
Capacity factor3%gas/coal/oil units, summer MW
Heat rate11,006Btu/kWhfossil units, electric fuel, HHV
First online2001Runs as peaking
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 | 49.3 | 5.6% | 9,766 |
| 2003 | 31.6 | 3.6% | 9,805 |
| 2004 | 37.4 | 4.3% | 10,051 |
| 2005 | 30.6 | 3.5% | 10,265 |
| 2006 | 22.8 | 2.6% | 10,349 |
| 2007 | 47.3 | 5.4% | 11,114 |
| 2008 | 63.2 | 7.2% | 11,425 |
| 2009 | 59.7 | 6.8% | 10,325 |
| 2010 | 47.7 | 5.5% | 10,398 |
| 2011 | 33.5 | 3.8% | 10,688 |
| 2012 | 70 | 8.0% | 10,341 |
| 2013 | 86.8 | 10.8% | 10,479 |
| 2014 | 77.8 | 9.7% | 10,223 |
| 2015 | 65.4 | 8.1% | 10,195 |
| 2016 | 46.4 | 5.8% | 10,219 |
| 2017 | 50.1 | 6.2% | 10,196 |
| 2018 | 44.8 | 5.6% | 9,686 |
| 2019 | 52.6 | 6.6% | 10,545 |
| 2020 | 34.4 | 4.3% | 10,134 |
| 2021 | 30 | 3.7% | 10,189 |
| 2022 | 33.5 | 4.2% | 10,538 |
| 2023 | 38.7 | 4.8% | 10,841 |
| 2024 | 24.4 | 3.0% | 11,083 |
| 2025 | 23 | 2.9% | 11,006 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusListed in EIA-860, no liquid burn in 36 months
Liquid fuel burned · 36 mo0 MMBtu
Last month with liquid burn—
Switch while operatingYes
Net summer MW on gas92
Net summer MW on oil92
Time gas → oilup to 6 h (EIA 6H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | GT | 49.9 | 45.6 | Jul 2001 | Operating | — | coming soon |
| CTG2 | Natural Gas Fired Combustion Turbine | GT | 49.9 | 46 | Jul 2001 | Operating | — | coming soon |
Owner / operator
Operator: Diamond Generating Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Diamond Generating Corporation | 100.0% | 100 MW |
Nearby plants
Within 80 km.
| CalPeak Power Border Peaker Plant | 115 MW | 0.5 km |
| Amazon SAN3 Solar Project | 7 MW | 1 km |
| Amazon - SAN5 | 3 MW | 1.8 km |
| Richard J Donovan Correctional Facility | 3 MW | 2.2 km |
| Pio Pico Energy Center | 395 MW | 2.6 km |
| Otay Mesa Generating Project | 711 MW | 3.2 km |