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2 MW BESS out of service in Worcester, MA — ISO New England Inc.
2 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2017
Operating Since
Coordinates
42.4518, -71.7378
County
Worcester, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Sterling Municipal Light Department - (MA) | — | — |
| Owner(s) | Sterling Municipal Light Department | — | — |
| Status | Out of service | — | — |
The Chocksett Rd Energy Storage Project is a 2 MW battery energy storage system located in Worcester County, Massachusetts. The plant began operating in 2017 and is owned and operated by Sterling Municipal Light Department. It is connected to the ISO New England Inc. balancing authority within the NPCC NERC region. The facility has one generator utilizing batteries as its energy source, classified by the EIA as "MWH".
The energy storage system has a total storage capacity of 3.9 MWh, providing a duration of approximately 1.95 hours. The battery chemistry is Lithium Ion (LIB). In terms of size rankings, the Chocksett Rd Energy Storage Project is the 112th largest power plant in Massachusetts out of 126, and the 1140th largest in the nation out of 1205.
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
ISO New England Inc. (ISNE)
Grid Voltage
13.8 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility
0 MWh
Net Discharge
-79 MWh
Annual Net Energy
-0.5%
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.
2017
$1,587/kW
Est. Construction Cost
Total estimated cost: $3.2M
Point of Interconnection
Nearest Substation
Sterling Substation · 115 kV
Substation Distance
0.034 km
Operator
Sterling Municipal Light Department
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.STERLING13.8
Pricing Hub
.H.INTERNAL_HUB
Location Type
NETWORK NODE
Node Source
Curated node match
Last updated 2026-03-26
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