McHenry Battery Storage
Battery storage power plant · McHenry County, Illinois
Nameplate capacity
20 MW
Rank in Illinois
#149
of 580 plants
In service since
2016
February 2016
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- McHenry Battery Storage
- County
- McHenry County
- Generating units
- 1
- Share of state capacity
- 0.04%
- Rank among battery storage plants in Illinois
- #3 of 3
- EIA plant code
- 60656
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| MCH1 | Batteries | 20 MW | 20 MW | 2016 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Illinois
| Grand Ridge Solar Farm | Solar | 20 MW |
| Marengo Battery Storage LLC | Battery storage | 20 MW |
| Archer Daniels Midland Peoria | Natural gas | 18 MW |
| Reynolds | Other | 18 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 20 MW solar plant and a 20 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Illinois power plants · What Illinois actually generates