Search
Search plants, projects, owners, and states
Search plants, projects, owners, and states
20 MW BESS out of service in McHenry, IL — PJM Interconnection, LLC
20 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2018
Operating Since
Coordinates
42.2527, -88.6400
County
McHenry, IL
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Marengo Battery Storage LLC | — | — |
| Owner(s) | Marengo Battery Storage LLC | — | — |
| Status | Out of service | — | — |
Marengo Battery Storage LLC is a 20 MW battery energy storage system located in McHenry County, Illinois. The plant began operating in 2018 and is owned and operated by Marengo Battery Storage LLC. It consists of a single generator utilizing battery technology with lithium-ion (LIB) chemistry. The plant's total storage capacity is 20 MWh, providing a duration of 1 hour at full output. The primary fuel listed is MWH, indicating that the plant draws power from the grid to charge its batteries.
The facility operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. Among battery storage facilities in Illinois, Marengo Battery Storage LLC ranks 9th out of 12 in terms of capacity. Nationally, it is ranked 686 out of 1205 similar facilities.
Generated from EIA, GEM, and public data sources
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
0 MWh
Net Discharge
-194 MWh
Annual Net Energy
-0.1%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
2018
$1,239/kW
Est. Construction Cost
Total estimated cost: $24.8M
Point of Interconnection
Nearest Substation
Marengo Substation · 138 kV
Substation Distance
0.978 km
Operator
Commonwealth Edison
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
123 MARE34.5 KV MARENGBS
Pricing Hub
N ILLINOIS HUB
Location Type
Generation Node
Node Source
Curated node match
No news articles linked yet for this plant.
News enrichment runs on demand — we have the pipeline, we just haven't fetched coverage for this plant yet. Request a detailed re-run and we'll add it.
No ask pi reports yet for this entity.
ask pi about Marengo Battery Storage LLCPJM Interconnection, LLC (PJM)
Grid Voltage
34.5 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Commercial
Sector
IPP Non-CHP