How many battery storage projects are planned in Arizona?

Developers have proposed 47 battery storage projects in Arizona with 17 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.

What is the largest planned battery storage project in Arizona?

Atlas Complex in La Paz County, Arizona is the largest planned, at 2,171 MW. It is expected to come online in 2028.

Who is developing battery storage projects 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.

Planned battery storage projects in Arizona

Developers have proposed 47 battery storage projects in Arizona with 17 GW of capacity, in the grid operators' interconnection queues.

Planned47

See operating battery storage projects in Arizona

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

More planned battery storage projects in Arizona are expected online in 2027 than in any other year

2026’262027’272028’282029’292030’302031’312032’322033’33

Planned battery storage projects by the year they're expected online. Source: the grid operators' interconnection queues, compiled by Cleanview.

The 10 largest planned battery storage projects in Arizona

Planned, by capacity

#	Battery storage project	County	Expected online	Capacity
1	Atlas Complex	La Paz County	2028	2,171 MW
2	Stanley	Maricopa County	2030	1,032 MW
3	Bluewater Solar	La Paz County	2028	1,014 MW
4	Bouse Solar And Storage Plant	La Paz County	2033	1,011 MW
5	Icarus Solar	Mohave County	2032	716 MW
6	Maricopa Solar	Maricopa County	2026	550 MW
7	Pinecone	Yuma County	2028	515 MW
8	Alisa Solar Energy Complex 2	Yuma County	2030	500 MW
9	Snowflake A Solar and BESS	Navajo County	2027	475 MW
10	Hoodini	Yuma County	2031	450 MW

Planned battery storage projects expected online soonest in Arizona

In the next 18 months, soonest first

#	Battery storage project	County	Expected online	Capacity
1	Maricopa Solar	Maricopa County	2026	550 MW
2	Atlas VIII	La Paz County	2026	210 MW
3	Kitt Solar	Pinal County	2026	100 MW
4	Atlas VIII	La Paz County	2027	172 MW
5	Hashknife Energy Center II LLC	Navajo County	2027	200 MW
6	Atlas BESS IV LLC	La Paz County	2027	150 MW
7	Winchester Solar I, LLC	Cochise County	2027	88 MW
8	Pioneer Clean Energy Center	Yuma County	2027	300 MW
9	White Tank Energy Storage	Maricopa County	2027	100 MW
10	Winchester Solar II, LLC	Cochise County	2027	88 MW

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

How Cleanview tracks battery storage projects

Operating battery storage projects 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 battery storage projects in Arizona

How many battery storage projects are planned in Arizona?: Developers have proposed 47 battery storage projects in Arizona with 17 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.
What is the largest planned battery storage project in Arizona?: Atlas Complex in La Paz County, Arizona is the largest planned, at 2,171 MW. It is expected to come online in 2028.
Who is developing battery storage projects 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.