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619.7 MW Natural Gas operating in Contra Costa, CA
619.7 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2009
Operating Since
Coordinates
38.0175, -121.7587
County
Contra Costa, CA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Pacific Gas & Electric Co. | — | — |
| Owner(s) | Pacific Gas & Electric Co. | — | — |
| Status | Operating | — | — |
Gateway Generating Station (GGS), formerly Contra Costa Unit 8 Power Project, is a combined-cycle, natural-gas-fired power station in Contra Costa County, California, which provides power to half a million customers in northern and central California. Gateway Generating Station is on the southern shore of the San Joaquin River, in Antioch, and is one of more than ten fossil-fuel power plants in Contra Costa County.
Read more on WikipediaGateway Generating Station is a 619.7 MW natural gas-fired combined cycle power plant located in Contra Costa County, California. The plant began operating in 2009 and is owned and operated by Pacific Gas & Electric Co. It consists of 3 generators. The plant operates 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, Gateway Generating Station produced 2,911,928 MWh of electricity, resulting in a capacity factor of 53.7%. The plant ranks as the 25th largest in California out of 76 plants, and 380th nationally out of 945 plants. The installed cost of the plant was $733.61 per kW, according to FERC data.
Generated from EIA, GEM, and public data sources
ISO/RTO
CAISO
Market
ISO/RTO Member
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
California Independent System Operator (CISO)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
269.1K MWh
Latest Month
2.9M MWh
Annual Generation
53.7%
Capacity Factor
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CO₂ Intensity
871 lb/MWh
NOx
0.049 lb/MWh
SO₂
0.004 lb/MWh
CH₄
0.016 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
56.8%
Annual Net Gen
3085 GWh
CO₂eq
871 lb/MWh
Subregion
WECC California
Combined cycle · PACIFIC GAS AND ELECTRIC COMPANY · Data from 2015–2024
$777/kW
Installed Cost
$10/kW
Annual CapEx
$44.9/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
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Point of Interconnection
Nearest Substation
Contra Costa Power Plant Substation · 230 kV
Substation Distance
< 10 km
Operator
Pacific Gas and Electric Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
CAISO
LMP Node
GATWAY_2_PL1X3-APND
Pricing Hub
TH_NP15_GEN-APND
Location Type
Aggregated Node
Node Source
EIA-860 direct report
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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