How many battery storage projects are planned in Wisconsin?

Developers have proposed 18 battery storage projects in Wisconsin with 2.5 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 Wisconsin?

Columbia - Rockdale 345.0kV in Columbia County, Wisconsin is the largest planned, at 400 MW. It is expected to come online in 2028.

Who is developing battery storage projects in Wisconsin?

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 Wisconsin

Developers have proposed 18 battery storage projects in Wisconsin with 2.5 GW of capacity, in the grid operators' interconnection queues.

Planned18

See operating battery storage projects in Wisconsin

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 Wisconsin are expected online in 2028 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 Wisconsin

Planned, by capacity

#	Battery storage project	County	Expected online	Capacity
1	Columbia - Rockdale 345.0kV	Columbia County	2028	400 MW
2	Columbia-North Madison 345kV	Columbia County	2027	300 MW
3	Granville345kV Substation	Milwaukee County	2028	300 MW
4	Balsam	Kenosha County	2024	200 MW
5	New J1502 TO Switching Station (Emerson)	Juneau County	2028	200 MW
6	Dawn Break Solar	Waushara County	2029	180 MW
7	Lakeview 138kV	Kenosha County	2028	150 MW
8	Plover	Portage County	2028	150 MW
9	BARRON - WASHCO 161.0kV	Barron County	2028	115 MW
10	Sand Lake 138kV	Waushara County	2026	100 MW

Planned battery storage projects expected online soonest in Wisconsin

In the next 18 months, soonest first

#	Battery storage project	County	Expected online	Capacity
1	Edgewater	Sheboygan County	2027	99 MW
2	EAU CLAIRE (ENDPOINT A) TO AS KING (ENDPOINT B) 345 KV	Dunn County	2027	0 MW
3	Columbia-North Madison 345kV	Columbia County	2027	300 MW
4	Saratoga - Badger West 138.0kV	Wood County	2028	50 MW
5	Granville345kV Substation	Milwaukee County	2028	300 MW
6	New J1502 TO Switching Station (Emerson)	Juneau County	2028	200 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 Wisconsin

How many battery storage projects are planned in Wisconsin?: Developers have proposed 18 battery storage projects in Wisconsin with 2.5 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 Wisconsin?: Columbia - Rockdale 345.0kV in Columbia County, Wisconsin is the largest planned, at 400 MW. It is expected to come online in 2028.
Who is developing battery storage projects in Wisconsin?: 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.