Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/57483
EIA plant 57483
Byron · Alameda · CA
Mariposa Energy Project
Operated by Diamond Generating Corporation
Published location
Where is Mariposa Energy Project?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
37.789167, -121.601944
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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.
127,493
2709
34,830
42,071
52,639
65,200
718,729
87,534
97,084
109,889
115,142
122,117
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 | 27,493 |
| 2 | 709 |
| 3 | 4,830 |
| 4 | 2,071 |
| 5 | 2,639 |
| 6 | 5,200 |
| 7 | 18,729 |
| 8 | 7,534 |
| 9 | 7,084 |
| 10 | 9,889 |
| 11 | 5,142 |
| 12 | 2,117 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 27,493 MWh |
| 2 | 709 MWh |
| 3 | 4,830 MWh |
| 4 | 2,071 MWh |
| 5 | 2,639 MWh |
| 6 | 5,200 MWh |
| 7 | 18,729 MWh |
| 8 | 7,534 MWh |
| 9 | 7,084 MWh |
| 10 | 9,889 MWh |
| 11 | 5,142 MWh |
| 12 | 2,117 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | NG | 49.9 | OP |
| CTG2 | Natural Gas Fired Combustion Turbine | NG | 49.9 | OP |
| CTG3 | Natural Gas Fired Combustion Turbine | NG | 49.9 | OP |
| CTG4 | Natural Gas Fired Combustion Turbine | NG | 49.9 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
57483
Sector
IPP Non-CHP
Water source
Simple Cycle Peaker
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 Mariposa Energy Project 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 Mariposa Energy Project
Variation in the published months
Across 12 numeric monthly generation entries, 1 has the highest recorded value (27,493 MWh) and 2 the lowest (709 MWh). Their difference is 26,784 MWh. Missing months have not been treated as zero.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | 49.9 | 49.9 | 49.9 | 25.0 |
| CTG2 | Natural Gas Fired Combustion Turbine | 49.9 | 49.9 | 49.9 | 25.0 |
| CTG3 | Natural Gas Fired Combustion Turbine | 49.9 | 49.9 | 49.9 | 25.0 |
| CTG4 | Natural Gas Fired Combustion Turbine | 49.9 | 49.9 | 49.9 | 25.0 |
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.