Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/54912
EIA plant 54912
Martinez · Contra Costa · CA
Martinez Refining
Operated by Martinez Refining Co
Published location
Where is Martinez Refining?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
38.016900, -122.111700
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the CA plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
132,796
252,522
362,325
466,490
567,723
662,237
761,025
864,890
966,053
1066,246
1169,133
1272,164
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 32,796 |
| 2 | 52,522 |
| 3 | 62,325 |
| 4 | 66,490 |
| 5 | 67,723 |
| 6 | 62,237 |
| 7 | 61,025 |
| 8 | 64,890 |
| 9 | 66,053 |
| 10 | 66,246 |
| 11 | 69,133 |
| 12 | 72,164 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 32,796 MWh |
| 2 | 52,522 MWh |
| 3 | 62,325 MWh |
| 4 | 66,490 MWh |
| 5 | 67,723 MWh |
| 6 | 62,237 MWh |
| 7 | 61,025 MWh |
| 8 | 64,890 MWh |
| 9 | 66,053 MWh |
| 10 | 66,246 MWh |
| 11 | 69,133 MWh |
| 12 | 72,164 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| GTG1 | Natural Gas Fired Combined Cycle | NG | 40 | OP |
| GTG2 | Natural Gas Fired Combined Cycle | NG | 40 | OP |
| STG1 | Other Gases | OG | 20 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
54912
Sector
Industrial CHP
Water source
Municipality
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right Martinez Refining power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at Martinez Refining
Variation in the published months
Across 12 numeric monthly generation entries, 12 has the highest recorded value (72,164 MWh) and 1 the lowest (32,796 MWh). Their difference is 39,368 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 3 numeric rows displayed in this table, MW ranges from 20 (STG1) to 40 (GTG1, GTG2). The difference is 20 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| GTG1 | Natural Gas Fired Combined Cycle | 40.0 | 40.0 | 42.0 | 4.0 |
| GTG2 | Natural Gas Fired Combined Cycle | 40.0 | 40.0 | 42.0 | 4.0 |
| STG1 | Other Gases | 20.0 | 20.0 | 20.0 | 4.0 |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.