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5 MW BESS operating in Middlesex, MA — ISO New England Inc.
5 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Coordinates
42.5540, -71.1360
County
Middlesex, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Kearsarge Riverpark I LLC | — | — |
| Owner(s) | Kearsarge Riverpark I LLC | — | — |
| Status | Operating | — | — |
Kearsarge Riverpark I LLC is a 5 MW battery energy storage system (BESS) located in Middlesex County, Massachusetts. The plant, owned and operated by Kearsarge Riverpark I LLC, commenced operations in 2025. It consists of a single generator utilizing batteries as its primary fuel source, designated by the code MWH. The BESS has a duration of 2.24 hours.
The facility operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. Kearsarge Riverpark I LLC ranks as the 66th largest power plant in Massachusetts out of 126, and nationally it is ranked 966 out of 1205 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
ISO-NE
Market
ISO/RTO Member
NERC Region
NPCC — Northeast Power Coordinating Council
Balancing Authority
No generation data available for this plant.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $6.8M
Point of Interconnection
Nearest Substation
Reading Substation · 115 kV
Substation Distance
3.402 km
Operator
Reading Municipal Light Department
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.N_READNG13.8
Pricing Hub
.H.INTERNAL_HUB
Location Type
NETWORK NODE
Node Source
Curated node match
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ISO New England Inc. (ISNE)
Grid Voltage
13.8 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP