MM San Diego-Miramar
Landfill gas power plant in San Diego County, California. 7.3 MW of nameplate capacity across 4 generators, operated by MM San Diego Energy-Miramar.
Also known as EIA plant 55094
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 7.3 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- July 1997First generator online
- Operator
- MM San Diego Energy-MiramarEIA operator ID 57227
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- San Diego County, CA32.8448, −117.1627
- EIA plant ID
- 55094EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power MM San Diego-Miramar produces
Free · EIA-923Net generation, 2025
39.6 GWh
39,608 MWh, final
Capacity factor, 2025
Not reported
2024: 81.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
35.9–51.2
GWh a year. Low 2023, high 2017
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 45,444 | Not reported | 12 of 12 |
| 2002 | 48,878 | Not reported | 12 of 12 |
| 2003 | 42,874 | Not reported | 12 of 12 |
| 2004 | 50,061 | Not reported | 12 of 12 |
| 2005 | 49,224 | Not reported | 12 of 12 |
| 2006 | 50,733 | Not reported | 12 of 12 |
| 2007 | 46,783 | Not reported | 12 of 12 |
| 2008 | 47,101 | Not reported | 12 of 12 |
| 2009 | 50,219 | Not reported | 12 of 12 |
| 2010 | 51,989 | 92.7% | 12 of 12 |
| 2011 | 49,204 | 87.8% | 12 of 12 |
| 2012 | 49,307 | 87.7% | 12 of 12 |
| 2013 | 47,306 | 84.4% | 12 of 12 |
| 2014 | 46,088 | 82.2% | 12 of 12 |
| 2015 | 51,008 | 91.0% | 12 of 12 |
| 2016 | 50,825 | 90.4% | 12 of 12 |
| 2017 | 51,224 | 91.4% | 12 of 12 |
| 2018 | 50,835 | 90.7% | 12 of 12 |
| 2019 | 48,556 | 86.6% | 12 of 12 |
| 2020 | 47,745 | 84.9% | 12 of 12 |
| 2021 | 43,488 | 77.6% | 12 of 12 |
| 2022 | 43,549 | 77.7% | 12 of 12 |
| 2023 | 35,880 | 64.0% | 12 of 12 |
| 2024 | 46,065 | 81.9% | 12 of 12 |
| 2025 | 39,608 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · CAISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| UNT1 | Landfill Gas | 1.6 | July 1997 |
| UNT2 | Landfill Gas | 1.9 | July 1997 |
| UNT3 | Landfill Gas | 1.9 | July 1997 |
| UNT4 | Landfill Gas | 1.9 | July 1997 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists MM San Diego Energy-Miramar as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about MM San Diego-Miramar
How much power does MM San Diego-Miramar produce?
MM San Diego-Miramar reported 39,608 MWh (39.6 GWh) of net generation in 2025.
Where is MM San Diego-Miramar?
MM San Diego-Miramar is in San Diego County, California, at 32.8448, −117.1627. It is in the California Independent System Operator balancing area (CISO).
Who operates MM San Diego-Miramar?
EIA-860M for August 2026 lists MM San Diego Energy-Miramar as the operator (EIA operator ID 57227). The operator is not always the owner.
When did MM San Diego-Miramar start operating?
Its first generator began operating in July 1997, according to EIA-860M.
Does InfraMap have power prices for MM San Diego-Miramar?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to MM San Diego-Miramar, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page