Martinez Refining
Natural gas power plant in Contra Costa County, California. 100 MW of nameplate capacity across 3 generators, operated by Martinez Refining Co.
Also known as EIA plant 54912
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 100 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- November 1995First generator online
- Operator
- Martinez Refining CoEIA operator ID 11651
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Contra Costa County, CA38.0169, −122.1117
- EIA plant ID
- 54912EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Martinez Refining produces
Free · EIA-923Net generation, 2025
734 GWh
733,953 MWh, final
Capacity factor, 2025
83.8%
2024: 84.7%
January to July 2026
383 GWh
Provisional
Range, 2015 to 2025
704.9–830.6
GWh a year. Low 2020, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 770,526 | Not reported | 12 of 12 |
| 2001 | 717,587 | Not reported | 12 of 12 |
| 2002 | 771,815 | Not reported | 12 of 12 |
| 2003 | 836,410 | Not reported | 12 of 12 |
| 2004 | 793,820 | Not reported | 12 of 12 |
| 2005 | 729,399 | Not reported | 12 of 12 |
| 2006 | 731,023 | Not reported | 12 of 12 |
| 2007 | 769,339 | Not reported | 12 of 12 |
| 2008 | 731,295 | Not reported | 12 of 12 |
| 2009 | 769,782 | Not reported | 12 of 12 |
| 2010 | 789,883 | 90.2% | 12 of 12 |
| 2011 | 786,092 | 89.7% | 12 of 12 |
| 2012 | 806,910 | 91.9% | 12 of 12 |
| 2013 | 810,500 | Not reported | 12 of 12 |
| 2014 | 705,908 | 80.6% | 12 of 12 |
| 2015 | 830,604 | 94.8% | 12 of 12 |
| 2016 | 826,189 | Not reported | 12 of 12 |
| 2017 | 785,590 | 89.7% | 12 of 12 |
| 2018 | 810,838 | 92.6% | 12 of 12 |
| 2019 | 827,535 | 94.5% | 12 of 12 |
| 2020 | 704,853 | 80.2% | 12 of 12 |
| 2021 | 765,254 | 87.4% | 12 of 12 |
| 2022 | 776,769 | 88.7% | 12 of 12 |
| 2023 | 731,479 | 83.5% | 12 of 12 |
| 2024 | 743,604 | 84.7% | 12 of 12 |
| 2025 | 733,953 | 83.8% | 12 of 12 |
| 2026 (provisional, partial year) | 382,534 | 75.2% | 7 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 |
|---|---|---|---|
| GTG1 | Natural Gas Fired Combined Cycle | 40.0 | November 1995 |
| GTG2 | Natural Gas Fired Combined Cycle | 40.0 | January 1996 |
| STG1 | Other Gases | 20.0 | December 1995 |
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 Martinez Refining Co 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 Martinez Refining
How much power does Martinez Refining produce?
Martinez Refining reported 733,953 MWh (734 GWh) of net generation in 2025, a 83.8% capacity factor on 100 MW of nameplate capacity. From January to July 2026 it reported 383 GWh, which is provisional.
Where is Martinez Refining?
Martinez Refining is in Contra Costa County, California, at 38.0169, −122.1117. It is in the California Independent System Operator balancing area (CISO).
Who operates Martinez Refining?
EIA-860M for August 2026 lists Martinez Refining Co as the operator (EIA operator ID 11651). The operator is not always the owner.
When did Martinez Refining start operating?
Its first generator began operating in November 1995, according to EIA-860M.
Does InfraMap have power prices for Martinez Refining?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Martinez Refining, 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