Miramar Energy Facility
San Diego County, California · EIA plant ID 56232 · Operator: San Diego Gas & Electric Co
Nameplate106MWSummer 94 MW
Generators2in service
Net generation15GWh12 mo to Aug 2026
Capacity factor2%gas/coal/oil units, summer MW
Heat rate10,298Btu/kWhfossil units, electric fuel, HHV
First online2005Runs 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) |
|---|---|---|---|
| 2005 | 4.7 | 1.9% | 9,258 |
| 2006 | 7.1 | 1.7% | 9,899 |
| 2007 | 7.8 | 1.9% | 9,912 |
| 2008 | 22.8 | 5.5% | 9,897 |
| 2009 | 53.3 | 9.1% | 9,963 |
| 2010 | 90.9 | 11.0% | 10,048 |
| 2011 | 141.1 | 17.1% | 10,020 |
| 2012 | 180.3 | 21.8% | 9,722 |
| 2013 | 143.9 | 17.5% | 9,667 |
| 2014 | 89.4 | 10.9% | 9,577 |
| 2015 | 81.5 | 9.9% | 10,341 |
| 2016 | 122.8 | 14.9% | 10,054 |
| 2017 | 112.1 | 13.6% | 10,109 |
| 2018 | 92.4 | 11.2% | 10,054 |
| 2019 | 73.6 | 8.9% | 10,170 |
| 2020 | 79.3 | 9.6% | 10,313 |
| 2021 | 20.2 | 2.5% | 10,361 |
| 2022 | 33.5 | 4.1% | 10,266 |
| 2023 | 23 | 2.8% | 10,378 |
| 2024 | 10.5 | 1.3% | 10,282 |
| 2025 | 7 | 0.9% | 10,324 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Natural Gas Fired Combustion Turbine | GT | 53 | 47 | Jun 2005 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 53 | 47 | Aug 2009 | Operating | — | coming soon |
Owner / operator
Operator: San Diego Gas & Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| San Diego Gas & Electric Co | 100.0% | 106 MW |
Nearby plants
Within 80 km.
| Top Gun Energy Storage | 30 MW | 0.2 km |
| AT&T - San Diego Trade Street | 1 MW | 1.2 km |
| MM San Diego-North City | retired | 2.8 km |
| North City - Landfill Gas Engine North | 2 MW | 2.9 km |
| Illumina Way SD | 4 MW | 3.1 km |
| P Plant | retired | 3.6 km |