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3 MW BESS operating in Middlesex, MA
3 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2019
Operating Since
Coordinates
42.4879, -71.0478
County
Middlesex, MA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Massachusetts Mun Wholes Electric Co | — | — |
| Owner(s) | Massachusetts Mun Wholes Electric Co | — | — |
| Status | Operating | — | — |
Beebe Substation Battery Storage is a 3 MW battery energy storage system located in Middlesex County, Massachusetts. The plant began operating in 2019 and has one generator. It is owned and operated by Massachusetts Municipal Wholesale Electric Company. The primary fuel type is listed as MWH, indicating that it draws power from the grid to charge its batteries. The battery system utilizes lithium-ion (LIB) chemistry and has a storage capacity of 3 MWh, providing a duration of 1 hour at full output.
The facility operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In terms of size, Beebe Substation Battery Storage ranks 99th out of 126 power plants in Massachusetts and 1062nd out of 1205 plants nationally. The plant's battery energy storage system (BESS) is characterized by its 3 MWh storage capacity.
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
3.0 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Electric Utility
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
−1 MWh
Net Charging
-36 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.
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2019
$2,973/kW
Est. Construction Cost
Total estimated cost: $8.9M
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Point of Interconnection
Nearest Substation
Wakefield Substation · 115 kV
Substation Distance
< 10 km
Operator
National Grid
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
—
Pricing Hub
.H.INTERNAL_HUB
Node Source
Shared substation inference
Substation identified. Node ID not yet resolved against ISO roster.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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