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8 MW Batteries (3 MW) + Solar Photovoltaic (5 MW) operating in Essex, MA — ISO New England Inc.
8 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2018
Operating Since
Coordinates
42.5825, -70.9967
County
Essex, MA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Novis Renewables, LLC | HG Solar Development | — |
| Owner(s) | HG Solar Development, LLC | — | — |
| Status | Operating | operating | — |
Middleton Solar Park is an 8 MW hybrid power plant located in Essex County, Massachusetts. The facility, which began operating in 2018, is owned and operated by HG Solar Development, LLC. The plant utilizes solar photovoltaic technology and also incorporates battery storage. It consists of two generators and has a 6.6 MWh battery energy storage system (BESS) with a duration of 2.2 hours, using lithium-ion battery chemistry. The solar array employs a fixed-tilt tracking system.
The plant operates within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region. In its most recent year of operation, Middleton Solar Park generated 6,808 MWh of electricity, resulting in a capacity factor of 9.7%. Financial data indicates that the plant's performance is tracked by Lawrence Berkeley National Laboratory (LBNL) solar energy research. Middleton Solar Park is ranked as the 34th largest solar facility in Massachusetts out of 126, and 887th nationally out of 1205 facilities.
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
272 MWh
Latest Month
6.8K MWh
Annual Generation
9.7%
Capacity Factor
Data from 2018–2024
$31.6/MWh
Energy Value
$4.2/MWh
Capacity Value
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.S_DANVRS115
Pricing Hub
.H.INTERNAL_HUB
Location Type
NETWORK NODE
Node Source
Curated node match
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ISO New England Inc. (ISNE)
Grid Voltage
23.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
—
Sector
IPP Non-CHP