2.1 MW BESS operating in Middlesex, MA — ISO New England Inc.
2.1 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2021
Operating Since
Coordinates
42.4796, -71.4581
County
Middlesex, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | MSS Energy Holdings, LLC (d.b.a. Calibrant Energy) | — | — |
| Owner(s) | MSS Energy Holdings, LLC (d.b.a. Calibrant Energy) | — | — |
| Status | Operating | — | — |
The Acton-Boxborough Schools BESS is a 2.1 MW battery energy storage system located in Middlesex County, Massachusetts. The plant began operating in 2021 and has one generator. It is owned and operated by MSS Energy Holdings, LLC, doing business as Calibrant Energy. The primary fuel listed is MWH, indicating that the plant draws power from the grid to charge its batteries.
The facility utilizes lithium-ion batteries (LIB) and has a total storage capacity of 4.3 MWh, providing a duration of approximately 2.05 hours at full output. The Acton-Boxborough Schools BESS operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. It is ranked as the 106th largest power plant in Massachusetts out of 126, and 1107th nationally out of 1205.
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
Commercial
Sector
IPP Non-CHP
−11 MWh
Net Charging
-100 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.
No financial data available for this plant.
Market Position
ISO/RTO Market
ISO-NE
LMP Node
—
Pricing Hub
.H.INTERNAL_HUB
Node Source
OSM spatial match