How many natural gas power plants are in Arizona?

Arizona has 33 operating utility-scale natural gas power plants with 18 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest natural gas power plant in Arizona?

Santan in Maricopa County, Arizona is the largest, at 1,326 MW. It came online in 2006.

How many natural gas power plants were built in Arizona in 2025?

2 natural gas power plants came online in Arizona in 2025, with 1,273 MW of capacity.

Who is developing natural gas power plants in Arizona?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Natural gas power plants in Arizona

Arizona has 33 operating natural gas power plants with 18 GW of capacity. 2 came online in 2025.

Operating33

See planned natural gas power plants in Arizona

Updated monthly. Last updated November 2026.

Under 250 MW250–999 MW1 GW and up

Updated monthly. Last updated November 2026.

Arizona had 24 natural gas power plants online in 2016 and 33 in 2026

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Natural gas power plants online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest natural gas power plants in Arizona

Operating, by capacity

#	Natural gas power plant	County	Year online	Capacity
1	Santan	Maricopa County	2006	1,326 MW
2	Harquahala Generating Project	Maricopa County	2004	1,277 MW
3	West Phoenix	Maricopa County	2003	1,207 MW
4	Red Hawk	Maricopa County	2002	1,127 MW
5	Coolidge Generation Station	Pinal County	2026	1,023 MW
6	Ocotillo	Maricopa County	2019	806 MW
7	Desert Basin	Pinal County	2022	745 MW
8	Arlington Valley Energy Facility	Maricopa County	2002	713 MW
9	Agua Fria	Maricopa County	2022	712 MW
10	South Point Energy Center	Mohave County	2001	708 MW

Natural gas power plants that came online most recently in Arizona

Newest first

#	Natural gas power plant	County	Year online	Capacity
1	Coolidge Generation Station	Pinal County	2026	1,023 MW
2	Sundance	Pinal County	2025	695 MW
3	Apache Station	Cochise County	2025	578 MW
4	Copper Crossing Energy and Research Cent	Pinal County	2024	99 MW
5	Desert Basin	Pinal County	2022	745 MW
6	Agua Fria	Maricopa County	2022	712 MW
7	H Wilson Sundt Generating Station	Pima County	2020	529 MW
8	Ocotillo	Maricopa County	2019	806 MW
9	Arizona State University CHP	Maricopa County	2019	17 MW
10	Yucca	Yuma County	2008	325 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks natural gas power plants

Operating natural gas power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about natural gas power plants in Arizona

How many natural gas power plants are in Arizona?: Arizona has 33 operating utility-scale natural gas power plants with 18 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest natural gas power plant in Arizona?: Santan in Maricopa County, Arizona is the largest, at 1,326 MW. It came online in 2006.
How many natural gas power plants were built in Arizona in 2025?: 2 natural gas power plants came online in Arizona in 2025, with 1,273 MW of capacity.
Who is developing natural gas power plants in Arizona?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.