2 MW BESS operating in Middlesex, MA — ISO New England Inc.
2 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
42.6091, -71.5392
County
Middlesex, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Groton BESS 1 LLC | — | — |
| Owner(s) | Groton BESS 1 LLC | — | — |
| Status | Operating | — | — |
Groton BESS 1 is a battery energy storage system located in Middlesex County, Massachusetts. The plant, which began operating in 2024, has a total capacity of 2 MW and consists of a single generator. It is owned and operated by Groton BESS 1 LLC. The primary fuel source is electricity (MWH), which is used to charge the batteries.
The facility utilizes lithium-ion batteries (LIB) to provide 8.9 MWh of energy storage, resulting in a duration of 4.45 hours at full capacity. Groton BESS 1 operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In terms of size, the plant ranks 115th out of 126 power plants in Massachusetts and 1139th out of 1205 nationally.
Generated from EIA, GEM, and public data sources
NERC Region
NPCC
Balancing Authority
ISO New England Inc.
Grid Voltage
13.8 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
−31 MWh
Net Charging
-117 MWh
Annual Net Energy
-0.7%
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.
No financial data available for this plant.
Point of Interconnection
Nearest Substation
Groton Muni Substation · 69 kV
Substation Distance
< 10 km
Operator
National Grid
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
7004
Pricing Hub
.H.INTERNAL_HUB
Node Source
EIA-860 direct report