678.3 MW Natural Gas operating in Contra Costa, CA — California Independent System Operator
678.3 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2001
Operating Since
Coordinates
41.4141, -74.4345
County
Contra Costa, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Los Medanos Energy Center LLC | Los Medanos Energy Center | — |
| Owner(s) | Los Medanos Energy Center LLC | Constellation Energy | — |
| Status | Operating | — | — |
Los Medanos Energy Center is a 678.3 MW natural gas-fired combined cycle power plant located in Contra Costa County, California. The plant began operating in 2001 and consists of 3 generators. It is owned by Constellation Energy and operated by Los Medanos Energy Center LLC. The plant is located within the California Independent System Operator (CAISO) balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, Los Medanos Energy Center generated 2,485,539 MWh of electricity, achieving a capacity factor of 41.9%. The plant is ranked as the 18th largest in California out of 76 power plants, and 336th nationally out of 945 plants.
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP CHP
348.9K MWh
Latest Month
2.5M MWh
Annual Generation
41.9%
Capacity Factor
No financial data available for this plant.
Market Position
ISO/RTO Market
CAISO
LMP Node
POD_LMEC_1_PL1X3-APND
Pricing Hub
TH_NP15_GEN-APND
Location Type
Aggregated Node
Node Source
EIA-860 direct report
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Last updated 2026-03-25
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