Onyx - Brockton Thatcher Landfill Solar
Solar power plant in Plymouth County, Massachusetts. 3.7 MW of nameplate capacity across 1 generator, operated by Onyx Asset Services Group.
Also known as Onyx - Brockton Thatcher Landfill Solar CSG · Onyx-Brockton Thatcher Landfill Solar (CSG) · EIA plant 61727
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 3.7 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- November 2017First generator online
- Operator
- Onyx Asset Services GroupEIA operator ID 60584
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Plymouth County, MA42.0664, −70.9835
- EIA plant ID
- 61727EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Onyx - Brockton Thatcher Landfill Solar produces
Free · EIA-923Net generation, 2025
4.97 GWh
4,971 MWh, final
Capacity factor, 2025
15.3%
2024: 15.6%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2018 to 2025
4.3–5.9
GWh a year. Low 2023, high 2022
| 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 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | 1,571 | Not reported | 2 of 12 |
| 2018 | 5,312 | Not reported | 12 of 12 |
| 2019 | 4,501 | 13.9% | 12 of 12 |
| 2020 | 5,375 | 16.5% | 12 of 12 |
| 2021 | 5,610 | 17.3% | 12 of 12 |
| 2022 | 5,935 | 18.3% | 12 of 12 |
| 2023 | 4,274 | 13.2% | 12 of 12 |
| 2024 | 5,071 | 15.6% | 12 of 12 |
| 2025 | 4,971 | 15.3% | 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 |
|---|---|---|---|
| 10238 | Solar Photovoltaic | 3.7 | November 2017 |
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 Onyx Asset Services Group 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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Questions about Onyx - Brockton Thatcher Landfill Solar
How much power does Onyx - Brockton Thatcher Landfill Solar produce?
Onyx - Brockton Thatcher Landfill Solar reported 4,971 MWh (4.97 GWh) of net generation in 2025, a 15.3% capacity factor on 3.7 MW of nameplate capacity.
Where is Onyx - Brockton Thatcher Landfill Solar?
Onyx - Brockton Thatcher Landfill Solar is in Plymouth County, Massachusetts, at 42.0664, −70.9835. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Onyx - Brockton Thatcher Landfill Solar?
EIA-860M for August 2026 lists Onyx Asset Services Group as the operator (EIA operator ID 60584). The operator is not always the owner.
When did Onyx - Brockton Thatcher Landfill Solar start operating?
Its first generator began operating in November 2017, according to EIA-860M.
Does InfraMap have power prices for Onyx - Brockton Thatcher Landfill Solar?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Onyx - Brockton Thatcher Landfill Solar, 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
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
- Project names from the USGS U.S. Large-Scale Solar Photovoltaic Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page