Natural Gas Power Plants in Arizona

Every operating natural gas power plant in Arizona on EIA-860M for 2026-07: 33 plants, 175 generating units and 18 GW of nameplate capacity across 7 counties.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants
33
175 generating units
Nameplate capacity
18 GW
Counties
7
Grid operator
Mixed
no single ISO covers a majority

Map of natural gas power plants in Arizona

Every one of the 33 plants is drawn at the coordinate EIA files for it.

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  • Natural gas · 33

List of natural gas power plants in Arizona

Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.

natural gas power plants in Arizona
SantanNatural Gas Fired Combined CycleSalt River ProjectMaricopa1,32691974Operating
Harquahala Generating ProjectNatural Gas Fired Combined CycleNew Harquahala Generating Co, LLCMaricopa1,277.162004Operating
West Phoenix2 technologiesArizona Public Service CoMaricopa1,207.4101972Operating
Red HawkNatural Gas Fired Combined CycleArizona Public Service CoMaricopa1,12762002Operating
Coolidge Generation StationNatural Gas Fired Combustion TurbineSalt River ProjectPinal1,023182011Operating
OcotilloNatural Gas Fired Combustion TurbineArizona Public Service CoMaricopa806.271972Operating
Apache Station3 technologiesArizona Electric Pwr Coop IncCochise781.791963Standby/Backup
Desert Basin2 technologiesSalt River ProjectPinal745.152001Operating
Agua Fria4 technologiesSalt River ProjectMaricopa737.5101957Operating
Arlington Valley Energy FacilityNatural Gas Fired Combined CycleArlington Valley LLCMaricopa71332002Operating
South Point Energy CenterNatural Gas Fired Combined CycleSouth Point Energy Center LLCMohave70832001Operating
SundanceNatural Gas Fired Combustion TurbineArizona Public Service CoPinal695122002Operating
Mesquite Generating Station Block 2Natural Gas Fired Combined CycleMesquite Power LLCMaricopa691.632003Operating
Mesquite Generating Station Block 1Natural Gas Fired Combined CycleSalt River ProjectMaricopa691.632003Operating
Griffith Energy LLCNatural Gas Fired Combined CycleGriffith Energy LLCMohave65532002Operating
Gila River Power Block 4Natural Gas Fired Combined CycleSalt River ProjectMaricopa61932003Operating
Gila River Power Block 1Natural Gas Fired Combined CycleSalt River ProjectMaricopa61932003Operating
Gila River Power Block 3Natural Gas Fired Combined CycleSalt River ProjectMaricopa61932003Operating
Gila River Power Block 2Natural Gas Fired Combined CycleSalt River ProjectMaricopa61932003Operating
Kyrene3 technologiesSalt River ProjectMaricopa596.471952Operating
H Wilson Sundt Generating Station3 technologiesTucson Electric Power CoPima528.9141962Operating
Yucca3 technologiesArizona Public Service CoYuma422.481959Operating
SaguaroNatural Gas Fired Combustion TurbineArizona Public Service CoPinal184.531972Operating
Copper Crossing Energy and Research Cent2 technologiesSalt River ProjectPinal153.452024Operating
Black Mountain Generating StationNatural Gas Fired Combustion TurbineUNS Electric, IncMohave12122008Operating
ValenciaNatural Gas Fired Combustion TurbineUNS Electric, IncSanta Cruz10841989Standby/Backup
North LoopNatural Gas Fired Combustion TurbineTucson Electric Power CoPima107.841972Operating
Demoss PetrieNatural Gas Fired Combustion TurbineTucson Electric Power CoPima8512001Operating
Yuma Cogeneration AssociatesNatural Gas Fired Combined CycleFalcon Power Operating CompanyYuma62.621994Operating
Arizona State University CHP2 technologiesEnergy Center Phoenix LLCMaricopa17.122006Operating
Cogeneration 1Natural Gas Fired Combined CycleUniversity of ArizonaPima912002Operating
Cogeneration 2Natural Gas Fired Combined CycleUniversity of ArizonaPima5.512002Operating
University of Arizona - Biosphere 22 technologiesUniversity of Arizona - Biosphere 2Pinal3.121990Standby/Backup

Largest natural gas power plants in Arizona

  1. 1SantanMaricopa County, Arizona1,326 MW
  2. 2Harquahala Generating ProjectMaricopa County, Arizona1,277.1 MW
  3. 3West PhoenixMaricopa County, Arizona1,207.4 MW
  4. 4Red HawkMaricopa County, Arizona1,127 MW
  5. 5Coolidge Generation StationPinal County, Arizona1,023 MW
  6. 6OcotilloMaricopa County, Arizona806.2 MW
  7. 7Apache StationCochise County, Arizona781.7 MW
  8. 8Desert BasinPinal County, Arizona745.1 MW
  9. 9Agua FriaMaricopa County, Arizona737.5 MW
  10. 10Arlington Valley Energy FacilityMaricopa County, Arizona713 MW

Natural gas power plants by county in Arizona

The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.

CountyPlantsNameplate MW
Maricopa1511,666.9
Pinal62,804.1
Mohave31,484
Cochise1781.7
Pima5736.2
Yuma2485
Santa Cruz1108

Natural Gas Power Plants in Arizona: FAQ

How many natural gas power plants are in Arizona?
33, with 18 GW of nameplate capacity between them, spread over 7 counties. That is the EIA-860M operating count for 2026-07.
Is there a map of Arizona natural gas power plants?
Yes — the map above. Each dot is one natural gas power plant, sized by nameplate capacity and placed at the coordinates EIA files for it.
Which is the largest natural gas power plant in Arizona?
Santan, at 1 GW. The table is sorted largest first, so the rest follow it.
Is there a natural gas power plant near me in Arizona?
The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
Which grid operator runs Arizona's natural gas power plants?
No single ISO or RTO covers most of them. EIA files each plant against its own balancing authority, which in Arizona is largely a vertically integrated utility rather than an organised market.
How current is this, and what is left out?
EIA-860M for 2026-07. Combined cycle, combustion turbine, steam turbine, internal combustion and other gas-fired units. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.