Power plants in Pima County, Arizona
38 operating power plants in Pima County, Arizona, with 2,075 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
38
Nameplate capacity
2,075 MW
Net generation, 2025
2.69 TWh
36 of 38 plants reported
Largest power plants in Pima County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | H Wilson Sundt Generating StationNatural gas | 529 | 1,638* | 42.4% |
| 2 | SerranoSolar and battery storage | 384 | 325* | – |
| 3 | Roadrunner Reserve Phase 1Battery storage | 200 | −20.8* | – |
| 4 | Roadrunner Reserve Phase 2Battery storage | 200 | – | – |
| 5 | Wilmot Energy Center IISolar and battery storage | 200 | – | – |
| 6 | Wilmot Energy Center LLCSolar | 160 | 269 | 23.8% |
| 7 | North LoopNatural gas | 108 | 1.0 | 0.1% |
| 8 | Demoss PetrieNatural gas | 85 | 2.1 | 0.3% |
| 9 | Avalon SolarSolar | 29 | 64.2 | 25.3% |
| 10 | Avra Valley SolarSolar | 25 | 61.5 | 28.1% |
| 11 | Picture Rocks Solar, LLCSolar | 20 | 49.6 | 28.3% |
| 12 | Avalon Solar IISolar | 16 | 42.9 | 30.6% |
| 13 | Davis Monthan AFB (AZ) West AirfieldSolar | 13 | 29.5 | 26.7% |
| 14 | Raptor RidgeSolar | 13 | 35.5 | 32.4% |
| 15 | Iron Horse Battery Storage HybridSolar and battery storage | 12 | 4.2 | 28.1% |
| 16 | Valencia SolarSolar | 10 | 26.6 | 30.3% |
| 17 | Pima Energy Storage SystemBattery storage | 10 | −0.6 | – |
| 18 | Cogeneration 1Natural gas | 9.0 | 48.3 | 61.2% |
| 19 | Tucson - CAVSARPSolar | 7.2 | 5.9 | – |
| 20 | Cogeneration 2Natural gas | 5.5 | 39.9 | 82.8% |
| 21 | Gato Montes Solar, LLCSolar | 5.0 | 7.4 | 16.9% |
| 22 | Tech Park SolarSolar | 5.0 | 12.4 | 28.3% |
| 23 | RE Ajo 1 LLCSolar | 4.5 | 9.0 | 22.9% |
| 24 | Prairie FireSolar | 4.5 | 7.7 | 19.6% |
| 25 | Actus Lend Lease DMAFBSolar | 3.0 | 0.0 | – |
| 26 | Broadway 2 - Tucson Phase IISolar | 3.0 | 4.4 | 16.8% |
| 27 | Amazon TUS2Solar | 2.6 | 5.5 | 24.3% |
| 28 | FRB Solar FarmSolar | 1.9 | 3.8 | 22.7% |
| 29 | Canyon Del Oro High School SolarSolar | 1.6 | 2.2 | 15.8% |
| 30 | Pima Community College - East CampusSolar | 1.3 | 2.8 | 24.6% |
| 31 | Pima Community College NWSolar | 1.3 | 3.0 | 26.4% |
| 32 | UASTP ISolar | 1.2 | 2.1 | 20.3% |
| 33 | Roger Road WWTPSolar | 1.1 | 1.0 | 10.3% |
| 34 | Pima Community CollegeSolar | 1.1 | 1.3 | 13.4% |
| 35 | Cogenra - TEPSolar | 1.0 | 1.9 | 21.1% |
| 36 | Amphitheater High School SolarSolar | 1.0 | 1.9 | 21.2% |
| 37 | Broadway 3 - Tucson Phase ISolar | 1.0 | 1.1 | 12.7% |
| 38 | TJX TucsonSolar | 1.0 | 2.1 | 24.5% |
* Fewer than 12 months of 2025 reported, so the total is partial.
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
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