Westford Solar Park
Solar power plant in Middlesex County, Massachusetts. 4 MW of nameplate capacity across 1 generator, operated by MN8 Energy LLC.
Also known as EIA plant 58534
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 2012First generator online
- Operator
- MN8 Energy LLCEIA operator ID 61944
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Middlesex County, MA42.6364, −71.4194
- EIA plant ID
- 58534EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Westford Solar Park produces
Free · EIA-923Net generation, 2025
4.07 GWh
4,068 MWh, final
Capacity factor, 2025
11.6%
2024: 13.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
4.1–5.9
GWh a year. Low 2025, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | 3,601 | Not reported | 9 of 12 |
| 2013 | 5,844 | 16.7% | 12 of 12 |
| 2014 | 5,482 | 15.6% | 12 of 12 |
| 2015 | 5,363 | 15.3% | 12 of 12 |
| 2016 | 5,944 | 16.9% | 12 of 12 |
| 2017 | 5,408 | 15.4% | 12 of 12 |
| 2018 | 5,139 | 14.7% | 12 of 12 |
| 2019 | 5,195 | 14.8% | 12 of 12 |
| 2020 | 5,347 | 15.2% | 12 of 12 |
| 2021 | 5,094 | 14.5% | 12 of 12 |
| 2022 | 5,107 | 14.6% | 12 of 12 |
| 2023 | 4,446 | 12.7% | 12 of 12 |
| 2024 | 4,641 | 13.2% | 12 of 12 |
| 2025 | 4,068 | 11.6% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Solar Photovoltaic | 4.0 | April 2012 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists MN8 Energy LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Power plants near Westford Solar Park
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Questions about Westford Solar Park
How much power does Westford Solar Park produce?
Westford Solar Park reported 4,068 MWh (4.07 GWh) of net generation in 2025, a 11.6% capacity factor on 4 MW of nameplate capacity.
Where is Westford Solar Park?
Westford Solar Park is in Middlesex County, Massachusetts, at 42.6364, −71.4194. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Westford Solar Park?
EIA-860M for August 2026 lists MN8 Energy LLC as the operator (EIA operator ID 61944). The operator is not always the owner.
When did Westford Solar Park start operating?
Its first generator began operating in April 2012, according to EIA-860M.
Does InfraMap have power prices for Westford Solar Park?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Westford Solar Park, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page