Mariposa Energy Project — Plant Summary
- EIA Plant ID
- 57483
- Capacity
- 199.6 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine
- Status
- Operating
- Location
- Alameda, CA
- Operating Since
- 2012
- Generators
- 4
- Operator
- Diamond Generating Corporation
- Parent Company
- —
- Annual Generation
- 29,135 MWh
- Capacity Factor
- 1.7%
- Balancing Authority
- California Independent System Operator
- ISO/RTO
- CAISO
- NERC Region
- WECC
Mariposa Energy Project
OperatingNatural Gas
Ranked #51 of 306 Natural Gas plants in CA#750 of 2009 nationally
199.6 MW Natural Gas operating in Alameda, CA — California Independent System Operator
EIAWD
199.6 MW
Nameplate Capacity
4
Generators
units
Natural Gas Fired Combustion Turbine
Technology
2012
Operating Since
Location
Coordinates
37.7894, -121.6017
County
Alameda, CA
Nearby Plants
- Sand Hill CWind80 MW · 2.2 km
- Diablo Winds LLCWind18 MW · 3.8 km
- Sand Hill BWind17 MW · 3.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Diamond Generating Corporation | — | — |
| Owner(s) | Diamond Generating Corporation | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Mariposa Energy Project is a 199.6 MW natural gas-fired power plant located in Alameda County, California. The plant began operating in 2012 and consists of four natural gas-fired combustion turbine generators. It is owned and operated by Diamond Generating Corporation. The plant is connected to the California Independent System Operator (CAISO) balancing authority, within the Western Electricity Coordinating Council (WECC) NERC region.
In its latest year of reported generation, the Mariposa Energy Project produced 29,135 MWh of electricity, operating at a capacity factor of 1.7%. The plant ranks 51st out of 76 power plants in California and 749th out of 945 plants nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
71 MWh
Latest Month
29.1K MWh
Annual Generation
1.7%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
CAISO
LMP Node
KELSO1_7_N001
Pricing Hub
TH_NP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
News & Articles (1)Beta