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2 MW BESS operating in Norfolk, MA
2 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2018
Operating Since
Coordinates
42.1877, -70.9764
County
Norfolk, MA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Town of Braintree - (MA) | — | — |
| Owner(s) | Town of Braintree - (MA) | — | — |
| Status | Operating | — | — |
Station 9 Energy Storage System is a 2 MW battery energy storage system located in Norfolk County, Massachusetts. The plant began operating in 2018 and is owned and operated by the Town of Braintree. It is interconnected to the ISO New England Inc. balancing authority and is within the NPCC NERC region. The facility consists of a single generator utilizing batteries as its energy source, specifically lithium-ion batteries (LIB).
The energy storage system has a total storage capacity of 4.2 MWh, providing a duration of 2.1 hours at its full 2 MW output. Station 9 ranks as the 116th largest power plant in Massachusetts out of 126, and nationally it ranks 1137th 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
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.
−4 MWh
Net Charging
-98 MWh
Annual Net Energy
-0.6%
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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2018
$1,239/kW
Est. Construction Cost
Total estimated cost: $2.5M
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Point of Interconnection
Nearest Substation
Grove Street Substation · 115 kV
Substation Distance
2.155 km
Operator
Town of Braintree Electric Light Department
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.PLAIN_ST13.8
Pricing Hub
.H.INTERNAL_HUB
Location Type
NETWORK NODE
Node Source
Curated node match
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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