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9 MW Batteries (5 MW) + Solar Photovoltaic (5 MW) operating in Middlesex, MA — ISO New England Inc.
9 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2021
Operating Since
Coordinates
42.6620, -71.5162
County
Middlesex, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | AES Distributed Energy | AES Distributed Energy | — |
| Owner(s) | AES Distributed Energy | — | — |
| Status | Operating | operating | — |
Dunstable Solar 1, LLC is a 9 MW hybrid power plant located in Middlesex County, Massachusetts. The facility, which began operating in 2021, is owned and operated by AES Distributed Energy. The plant utilizes both solar photovoltaic technology and battery storage. It consists of two generators and has a fixed tilt solar tracking system. The battery energy storage system (BESS) has a capacity of 20.2 MWh and a duration of 4.49 hours, utilizing lithium-ion battery chemistry (LIB).
The plant's primary fuel source is listed as MWH. In its latest year of operation, Dunstable Solar 1 generated 10,832 MWh, resulting in a capacity factor of 13.7%. The plant operates within the ISO New England Inc. balancing authority and the NPCC NERC region. Dunstable Solar 1 ranks as the 12th largest out of 126 solar plants in Massachusetts, and 853rd nationally out of 1205 plants.
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
544 MWh
Net Discharge
10.8K MWh
Annual Net Energy
13.7%
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.
Data from 2022–2024
$33.2/MWh
Energy Value
$4.6/MWh
Capacity Value
Point of Interconnection
Nearest Substation
Dunstable Substation · 69 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
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
No news articles linked yet for this plant.
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ISO New England Inc. (ISNE)
Grid Voltage
13.2 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP