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Arizona Power Plants
Utility-scale generators of 1 megawatt or more in Arizona, as of August 2026 (EIA-860M).
- Operating capacity
- 45.0 GW
- Largest plant
- Palo Verde
- 4.2 GW
- Planned through 2028
- 13.2 GW
- Generation, 2023
- 111.8 TWh
Capacity by fuel
Operating nameplate capacity
- Natural gas17.7 GW 39.3%
- Solar8.8 GW 19.6%
- Battery storage6.6 GW 14.8%
- Nuclear4.2 GW 9.4%
- Coal2.8 GW 6.2%
- Hydroelectric2.7 GW 6.0%
- Wind1.7 GW 3.9%
- Pumped storage hydro194 MW 0.4%
- Petroleum125 MW 0.3%
- Biomass33.4 MW 0.1%
Electricity generated, 2023
Net generation by fuel from EPA eGRID. CO2 output rate 687 lb/MWh
- Natural gas52.8 TWh 47.2%
- Nuclear31.5 TWh 28.2%
- Coal12.1 TWh 10.8%
- Solar7.4 TWh 6.6%
- Hydroelectric6.1 TWh 5.4%
- Wind1.7 TWh 1.5%
- Biomass193 GWh 0.2%
- Petroleum32 GWh 0.0%
Largest power plants
Top 150 by operating capacity. See counties below for every plant
Swipe the table sideways to see more columns.
Planned and under construction
Largest planned additions, including expansions of operating plants
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Power plants by county
Operating plants located in each county
Capacity is the nameplate rating of generators that are operating or on standby. Solar capacity is in alternating current (AC). Batteries are counted by power (MW), not by stored energy (MWh).
Frequently asked questions
- How much power plant capacity does Arizona have?
- Arizona has 45.0 GW of operating utility-scale capacity as of August 2026.
- What is the largest power plant in Arizona?
- Palo Verde is the largest at 4.2 GW of nuclear capacity.
- Where does Arizona get its electricity?
- Power plants in Arizona generated 111.8 TWh in 2023. The mix is shown above. Power also flows between states, so what plants in a state generate is not the same as what its customers use.
Source: U.S. Energy Information Administration, Form EIA-860M; U.S. EPA eGRID · Data for August 2026