Gila River Power Block 4 — Plant Summary
- EIA Plant ID
- 55306
- Capacity
- 619 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Maricopa, AZ
- Operating Since
- 2003
- Generators
- 3
- Operator
- Salt River Project
- Parent Company
- Salt River Project
- Annual Generation
- 2,671,230 MWh
- Capacity Factor
- 49.3%
- Balancing Authority
- Salt River Project
- ISO/RTO
- —
- NERC Region
- WECC
Gila River Power Block 4
OperatingNatural Gas
Ranked #16 of 33 Natural Gas plants in AZ#378 of 2009 nationally
619 MW Natural Gas operating in Maricopa, AZ — Salt River Project
EIAWD
619 MW
Nameplate Capacity
3
Generators
units
Natural Gas Fired Combined Cycle
Technology
2003
Operating Since
Location
Coordinates
32.9750, -112.6944
County
Maricopa, AZ
Nearby Plants
- Gila River Power Block 1Natural Gas619 MW · 0.0 km
- Gila River Power Block 3Natural Gas619 MW · 0.0 km
- Gila River Power Block 2Natural Gas619 MW · 0.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Salt River Project | Salt River Project | — |
| Owner(s) | Salt River Project | Salt River Project | — |
| Status | Operating | — | — |
Ownership Chain
About
Gila River Power Block 4 is a 619 MW natural gas-fired combined cycle power plant located in Maricopa County, Arizona. The plant began operating in 2003 and is owned and operated by Salt River Project. It consists of 3 generators utilizing natural gas as its primary fuel source. Gila River Power Block 4 operates within the Salt River Project balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, Gila River Power Block 4 generated 2,671,230 MWh of electricity, achieving a capacity factor of 49.3%. The plant is ranked as the 19th largest in Arizona out of 26 plants, and nationally it is ranked 382nd out of 945 plants.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Salt River Project
Grid Voltage
500 kV
Regulatory Status
RE
Entity Type
Political Subdivision
Sector
Electric Utility
Generation
32.0K MWh
Latest Month
2.7M MWh
Annual Generation
49.3%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
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