Harquahala Generating Project — Plant Summary
- EIA Plant ID
- 55372
- Capacity
- 1277.1 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combined Cycle
- Status
- Operating
- Location
- Maricopa, AZ
- Operating Since
- 2004
- Generators
- 6
- Operator
- New Harquahala Generating Co, LLC
- Parent Company
- —
- Annual Generation
- 2,896,555 MWh
- Capacity Factor
- 25.7%
- Balancing Authority
- New Harquahala Generating Company, LLC - HGBA
- ISO/RTO
- —
- NERC Region
- WECC
Harquahala Generating Project
OperatingNatural Gas
Ranked #2 of 33 Natural Gas plants in AZ#91 of 2009 nationally
1277.1 MW Natural Gas operating in Maricopa, AZ — New Harquahala Generating Company, LLC - HGBA
EIAWD
1,277.1 MW
Nameplate Capacity
6
Generators
units
Natural Gas Fired Combined Cycle
Technology
2004
Operating Since
Location
Coordinates
33.4760, -113.1134
County
Maricopa, AZ
Nearby Plants
- Harquahala 2BESS600 MW · 1.8 km
- Harquahala Sun Solar ProjectSolar150 MW · 4.4 km
- Desert Sand BESSBESS600 MW · 6.2 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | New Harquahala Generating Co, LLC | — | — |
| Owner(s) | BlackRock Inc., Capital Power Corporation | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Harquahala Generating Project is a 1277.1 MW natural gas-fired combined cycle power plant located in Maricopa County, Arizona. It began operating in 2004 and consists of 6 generators. The plant is owned and operated by New Harquahala Generating Co, LLC. It is the second-largest power plant in Arizona out of 26, and ranks 96th nationally out of 945 plants.
In the most recent year of data, the Harquahala Generating Project produced 2,896,555 MWh of electricity, operating at a capacity factor of 25.7%. The plant is located within the Western Electricity Coordinating Council (WECC) NERC region. The balancing authority is New Harquahala Generating Company, LLC - HGBA.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
New Harquahala Generating Company, LLC - HGBA
Grid Voltage
525 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
26.6K MWh
Latest Month
2.9M MWh
Annual Generation
25.7%
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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