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8.1 MW Batteries (1 MW) + Petroleum Liquids (7 MW) + Solar Photovoltaic (1 MW) operating in Suffolk, MA — ISO New England Inc.
8.1 MW
Nameplate Capacity
18
Generators
units
Hybrid (3)
Technology
Batteries + Petroleum Liquids + Solar Photovoltaic
1972
Operating Since
Coordinates
42.3130, -71.0364
County
Suffolk, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | MSS Energy Holdings, LLC (d.b.a. Calibrant Energy) | Massachusetts Electric | — |
| Owner(s) | MSS Energy Holdings, LLC (d.b.a. Calibrant Energy) | — | — |
| Status | Operating | operating | — |
Located in Suffolk County, Massachusetts, the UMass Boston plant is an 8.1 MW hybrid power plant owned and operated by MSS Energy Holdings, LLC (d.b.a. Calibrant Energy). The plant, which began operating in 1972, utilizes multiple technologies including petroleum liquids, solar photovoltaic, and batteries. The primary fuel source is distillate fuel oil (DFO). The facility consists of 18 generators.
The plant includes a 2.1 MWh battery energy storage system (BESS) with a duration of 4.2 hours, utilizing lithium-ion battery (LIB) chemistry. The solar photovoltaic array employs a fixed tilt tracking system. In the most recent year of reported data, the plant generated 1,069 MWh, resulting in a capacity factor of 1.5%. The UMass Boston plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. It is ranked 12th out of 17 similar plants in Massachusetts and 409th out of 886 nationally.
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
NR — Non-Regulated
Entity Type
Commercial
Sector
Commercial Non-CHP
29 MWh
Latest Month
1.1K MWh
Annual Generation
1.5%
Capacity Factor
CO₂ Intensity
170 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
3 lb/MWh
SO₂
0.300 lb/MWh
CH₄
0.007 lb/MWh
N₂O
0.001 lb/MWh
Capacity Factor
0.9%
Annual Net Gen
1 GWh
CO₂eq
170 lb/MWh
Subregion
NPCC New England
2013
$765/kW
Est. Construction Cost
Total estimated cost: $6.2M
Point of Interconnection
Nearest Substation
Dewar Street Substation · 115 kV
Substation Distance
1.647 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.DEWAR_ST13.8110A LD
Pricing Hub
.H.INTERNAL_HUB
Location Type
NETWORK NODE
Node Source
Curated node match
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