How many battery storage projects are in Illinois?

3, with 76 MW of nameplate capacity between them, spread over 2 counties. That is the EIA-860M operating count for 2026-07.

Is there a map of Illinois battery storage projects?

Yes — the map above. Each dot is one battery storage project, sized by nameplate capacity and placed at the coordinates EIA files for it.

Which is the largest battery storage project in Illinois?

Grand Ridge Battery Projects, at 36 MW. The table is sorted largest first, so the rest follow it.

Is there a battery storage project near me in Illinois?

The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.

Which grid operator runs Illinois's battery storage projects?

Most of them sit inside PJM, according to the balancing-authority code EIA files against each plant. Live conditions for that market are on this site.

How current is this, and what is left out?

EIA-860M for 2026-07. EIA technology "Batteries" — grid-connected electrochemical storage of 1 MW and above. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.

Battery Storage Projects in Illinois

Every operating battery storage project in Illinois on EIA-860M for 2026-07: 3 plants, 4 storage units and 76 MW of nameplate capacity across 2 counties, most of it inside PJM.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Plants: 3; 4 generating units
Nameplate capacity: 76 MW
Counties: 2
Grid operator: PJM; covers most of these plants

Map of battery storage projects in Illinois

Every one of the 3 plants is drawn at the coordinate EIA files for it.

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Battery · 3

List of battery storage projects in Illinois

Sort by any column. Capacity is nameplate, summed across every generating unit EIA lists at the site.

battery storage projects in Illinois

Grand Ridge Battery ProjectsBatteries	Invenergy Services LLC	LaSalle	36	2	2013	Operating
McHenry Battery StorageBatteries	McHenry Battery Storage	McHenry	20	1	2016	Operating
Marengo Battery Storage LLCBatteries	Marengo Battery Storage LLC	McHenry	20	1	2018	Out of service and NOT expected to return to service in next calendar year

Largest battery storage projects in Illinois

1Grand Ridge Battery ProjectsLaSalle County, Illinois36 MW
2McHenry Battery StorageMcHenry County, Illinois20 MW
3Marengo Battery Storage LLCMcHenry County, Illinois20 MW

Battery storage projects by county in Illinois

The county EIA files against each plant. It is the fastest way to find the plant nearest a given town.

County	Plants	Nameplate MW
McHenry	2	40
LaSalle	1	36

Battery Storage Projects in Illinois: FAQ

How many battery storage projects are in Illinois?: 3, with 76 MW of nameplate capacity between them, spread over 2 counties. That is the EIA-860M operating count for 2026-07.
Is there a map of Illinois battery storage projects?: Yes — the map above. Each dot is one battery storage project, sized by nameplate capacity and placed at the coordinates EIA files for it.
Which is the largest battery storage project in Illinois?: Grand Ridge Battery Projects, at 36 MW. The table is sorted largest first, so the rest follow it.
Is there a battery storage project near me in Illinois?: The county roll-up below groups every plant by county, which is the quickest way to find the one closest to a given town.
Which grid operator runs Illinois's battery storage projects?: Most of them sit inside PJM, according to the balancing-authority code EIA files against each plant. Live conditions for that market are on this site.
How current is this, and what is left out?: EIA-860M for 2026-07. EIA technology "Batteries" — grid-connected electrochemical storage of 1 MW and above. Plants below 1 MW are not surveyed by EIA and so are absent; retirements and additions after 2026-07 arrive with the next monthly release.