Natural gas power plants in Arizona
32 operating natural gas power plants in Arizona with 17,267 MW of natural gas capacity, largest first. From EIA-860M, August 2026.
Largest natural gas power plants in Arizona
| # | Plant | Natural gas MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | SantanMaricopa County | 1,326 | 4,641 | 40.0% |
| 2 | Harquahala Generating ProjectMaricopa County | 1,277 | 2,897 | 25.9% |
| 3 | West PhoenixMaricopa County | 1,207 | 4,277 | 40.4% |
| 4 | Red HawkMaricopa County | 1,127 | 4,843 | 49.1% |
| 5 | Coolidge Generation StationPinal County | 1,023 | 58.8 | 0.9% |
| 6 | OcotilloMaricopa County | 806 | 443 | 6.3% |
| 7 | Desert BasinPinal County | 745 | 2,085 | 31.9% |
| 8 | Arlington Valley Energy FacilityMaricopa County | 713 | 3,345 | 53.6% |
| 9 | Agua FriaMaricopa County | 712 | 244 | 4.0% |
| 10 | South Point Energy CenterMohave County | 708 | 2,025 | – |
| 11 | SundancePinal County | 695 | 313 | – |
| 12 | Mesquite Generating Station Block 2Maricopa County | 692 | 3,951 | 65.2% |
| 13 | Mesquite Generating Station Block 1Maricopa County | 692 | 3,522 | 58.1% |
| 14 | Griffith Energy LLCMohave County | 655 | 3,781 | 65.9% |
| 15 | Gila River Power Block 4Maricopa County | 619 | 2,671 | 49.3% |
| 16 | Gila River Power Block 1Maricopa County | 619 | 2,561 | 47.2% |
| 17 | Gila River Power Block 3Maricopa County | 619 | 2,914 | 53.7% |
| 18 | Gila River Power Block 2Maricopa County | 619 | 2,890 | 53.3% |
| 19 | H Wilson Sundt Generating StationPima County | 529 | 1,638* | 42.4% |
| 20 | KyreneMaricopa County | 488 | 1,008 | – |
| 21 | Apache StationCochise County · Natural gas and coal | 325 | 2,157 | – |
| 22 | YuccaYuma County · Natural gas and oil | 325 | 200 | 5.4% |
| 23 | SaguaroPinal County | 185 | 118 | 7.3% |
| 24 | Black Mountain Generating StationMohave County | 121 | 55.2 | 5.2% |
| 25 | North LoopPima County | 108 | 1.0 | 0.1% |
| 26 | Copper Crossing Energy and Research CentPinal County · Natural gas and solar | 99 | 4.3 | – |
| 27 | Demoss PetriePima County | 85 | 2.1 | 0.3% |
| 28 | Yuma Cogeneration AssociatesYuma County | 63 | 17.0 | 3.1% |
| 29 | ValenciaSanta Cruz County | 54 | 6.8 | 0.7% |
| 30 | Arizona State University CHPMaricopa County | 17 | 40.0 | 26.7% |
| 31 | Cogeneration 1Pima County | 9.0 | 48.3 | 61.2% |
| 32 | Cogeneration 2Pima County | 5.5 | 39.9 | 82.8% |
* Fewer than 12 months of 2025 reported, so the total is partial.
Projects where natural gas is the largest fuel or at least a fifth of nameplate capacity. MW is natural gas nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources