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5 MW Solar operating in Kennebec, ME — ISO New England Inc.
5 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2022
Operating Since
Coordinates
44.1915, -70.0192
County
Kennebec, ME
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Maine DG Solar Monmouth, LLC | Maine DG Solar Monmouth | — |
| Owner(s) | Maine DG Solar Monmouth, LLC | — | — |
| Status | Operating | operating | — |
The Monmouth solar plant is a 5 MW solar photovoltaic facility located in Kennebec County, Maine. The plant, which began operating in 2022, is owned and operated by Maine DG Solar Monmouth, LLC. It consists of a single generator utilizing single-axis tracking technology to maximize solar energy capture. The plant is interconnected to the grid within the ISO New England Inc. balancing authority and the Northeast Power Coordinating Council (NPCC) NERC region.
In its latest year of operation, the Monmouth plant generated 9,375 MWh of electricity, achieving a capacity factor of 21.4%. The plant is ranked as the 25th largest solar facility in Maine out of 153, and nationally it is ranked 2413 out of 7108. The plant's primary fuel source is solar energy.
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
314 MWh
Latest Month
9.4K MWh
Annual Generation
21.4%
Capacity Factor
Data from 2023–2024
$31.5/MWh
Energy Value
$3.0/MWh
Capacity Value
Point of Interconnection
Nearest Substation
Monmouth Substation · 115 kV
Substation Distance
2.266 km
Operator
Central Maine Power Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ISO-NE
LMP Node
LD.MONMOUTH12
Pricing Hub
.Z.MAINE
Location Type
NETWORK NODE
Node Source
Curated node match
Last updated 2026-03-26
View all articlesISO New England Inc. (ISNE)
Grid Voltage
35.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP