Harquahala Sun Solar Project — Plant Summary
- EIA Plant ID
- 66670
- Capacity
- 150 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Maricopa, AZ
- Operating Since
- 2025
- Generators
- 1
- Operator
- Copia Power
- Parent Company
- —
- Annual Generation
- 316,758 MWh
- Capacity Factor
- 31.9%
- Balancing Authority
- Arizona Public Service Company
- ISO/RTO
- —
- NERC Region
- WECC
Harquahala Sun Solar Project
OperatingSolar
Ranked #20 of 104 Solar plants in AZ#492 of 7447 nationally
150 MW Solar operating in Maricopa, AZ — Arizona Public Service Company
EIAGEM
150 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2025
Operating Since
Location
Coordinates
33.4406, -113.1352
County
Maricopa, AZ
Nearby Plants
- Harquahala 2BESS600 MW · 3.2 km
- Harquahala Generating ProjectNatural Gas1277.1 MW · 4.4 km
- Saddle Mountain Solar ISolar15 MW · 8.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Copia Power | — | — |
| Owner(s) | Copia Power | — | — |
| Status | Operating | operating | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
The Harquahala Sun Solar Project is a 150 MW solar photovoltaic power plant located in Maricopa County, Arizona. The plant began operating in 2025 and utilizes fixed-tilt solar tracking technology. It is owned and operated by Copia Power. As of the latest rankings, the plant is the 14th largest solar facility in Arizona (out of 23) and 371st largest nationally (out of 639).
The plant's primary fuel source is solar energy. In its most recent year of operation, the Harquahala Sun Solar Project generated 316,758 MWh of electricity, achieving a capacity factor of 31.9%. The plant has one generator. The Harquahala Sun Solar Project operates within the Arizona Public Service Company balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Arizona Public Service Company
Grid Voltage
500 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
25.0K MWh
Latest Month
316.8K MWh
Annual Generation
31.9%
Capacity Factor
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.
News & Articles (1)Beta
Regulatory·permitting
County may approve another solar plant
A major solar development is going before the Maricopa County Board of Supervisors — again. Kimley-Horn & Associates' site plan submittal...
Maricopa County Board of Supervisors (regulator)Kimley-Horn & Associates (other)
Your Valley·3 years ago
Last updated 2026-03-14
View all articles