How many battery storage projects are planned in Ohio?

Developers have proposed 21 battery storage projects in Ohio with 4.3 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 Ohio?

Marysville-Flatlick 765 kV in Madison County, Ohio is the largest planned, at 800 MW.

Who is developing battery storage projects in Ohio?

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 Ohio

Developers have proposed 21 battery storage projects in Ohio with 4.3 GW of capacity, in the grid operators' interconnection queues.

Planned21

See operating battery storage projects in Ohio

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 Ohio are expected online in 2026 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 Ohio

Planned, by capacity

#	Battery storage project	County	Expected online	Capacity
1	Marysville-Flatlick 765 kV	Madison County	–	800 MW
2	Marysville-Flatlick 765 kV	Madison County	–	800 MW
3	Maddox Creek-RP Mone 345 kV	Van Wert County	2030	400 MW
4	Marysville-Flatlick 765 kV	Madison County	2024	400 MW
5	Marysville-Flatlick 765 kV	Madison County	2024	400 MW
6	S Berwick - Galion 345 kV	Wyandot County	2024	400 MW
7	Flint	Franklin County	2027	200 MW
8	Flint Grid	Licking County	2027	200 MW
9	Timber Road II WF	Paulding County	2029	147 MW
10	Amsden – Fremont Center 69 kV	Seneca County	2024	105 MW

Planned battery storage projects expected online soonest in Ohio

In the next 18 months, soonest first

#	Battery storage project	County	Expected online	Capacity
1	Flint Grid	Licking County	2027	200 MW
2	Salt City Solar Project - Hybrid	Ross County	2027	13 MW
3	Flint	Franklin County	2027	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 Ohio

How many battery storage projects are planned in Ohio?: Developers have proposed 21 battery storage projects in Ohio with 4.3 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 Ohio?: Marysville-Flatlick 765 kV in Madison County, Ohio is the largest planned, at 800 MW.
Who is developing battery storage projects in Ohio?: 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.