Ashburnham Energy Storage Project
Battery storage project in Worcester County, Massachusetts. 3 MW of nameplate capacity across 1 generator, operated by Massachusetts Mun Wholes Electric Co.
Also known as EIA plant 62219
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 3 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- March 2019First generator online
- Operator
- Massachusetts Mun Wholes Electric CoEIA operator ID 11806
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- None linkedNo verified ISO node
- Location
- Worcester County, MA42.6714, −71.9267
- EIA plant ID
- 62219EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Ashburnham Energy Storage Project produces
Free · EIA-923Net generation, 2025
−36 MWh
−36 MWh, final
Battery discharge, 2025
256 MWh
Charge 292 MWh
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2020 to 2025
−141.0–−5.0
MWh a year. Low 2021, high 2020
| 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 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | −3 | Not reported | 10 of 12 |
| 2020 | −5 | Not reported | 12 of 12 |
| 2021 | −141 | Not reported | 12 of 12 |
| 2022 | −133 | Not reported | 12 of 12 |
| 2023 | −51 | Not reported | 12 of 12 |
| 2024 | −58 | Not reported | 12 of 12 |
| 2025 | −36 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Battery plants can report negative net generation, when charging uses more energy than they discharge.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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 |
|---|---|---|---|
| AMLPB | Batteries | 3.0 | March 2019 |
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 Massachusetts Mun Wholes Electric Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
300 analyst questions a month, plus MCP
Query Ashburnham Energy Storage Project and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Ashburnham Energy Storage Project
More plants operated by Massachusetts Mun Wholes Electric Co
Questions about Ashburnham Energy Storage Project
How much power does Ashburnham Energy Storage Project produce?
Ashburnham Energy Storage Project reported −36 MWh (−36 MWh) of net generation in 2025.
Where is Ashburnham Energy Storage Project?
Ashburnham Energy Storage Project is in Worcester County, Massachusetts, at 42.6714, −71.9267. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Ashburnham Energy Storage Project?
EIA-860M for August 2026 lists Massachusetts Mun Wholes Electric Co as the operator (EIA operator ID 11806). The operator is not always the owner.
When did Ashburnham Energy Storage Project start operating?
Its first generator began operating in March 2019, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page