Station 9 Energy Storage System
Battery storage project in Norfolk County, Massachusetts. 2 MW of nameplate capacity across 1 generator, operated by Town of Braintree - (MA).
Also known as EIA plant 62257
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 2 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- June 2018First generator online
- Operator
- Town of Braintree - (MA)EIA operator ID 2144
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- None linkedNo verified ISO node
- Location
- Norfolk County, MA42.1877, −70.9764
- EIA plant ID
- 62257EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Station 9 Energy Storage System produces
Free · EIA-923Net generation, 2025
−29 MWh
−29 MWh, final
Battery discharge, 2025
326 MWh
Charge 354 MWh
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2019 to 2025
−103.0–−29.0
MWh a year. Low 2021, high 2025
| 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 | −33 | Not reported | 7 of 12 |
| 2019 | −64 | Not reported | 12 of 12 |
| 2020 | −69 | Not reported | 12 of 12 |
| 2021 | −103 | Not reported | 12 of 12 |
| 2022 | −102 | Not reported | 12 of 12 |
| 2023 | −98 | Not reported | 12 of 12 |
| 2024 | −98 | Not reported | 12 of 12 |
| 2025 | −29 | 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 |
|---|---|---|---|
| ESS1 | Batteries | 2.0 | June 2018 |
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 Town of Braintree - (MA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Station 9 Energy Storage System
More plants operated by Town of Braintree - (MA)
Questions about Station 9 Energy Storage System
How much power does Station 9 Energy Storage System produce?
Station 9 Energy Storage System reported −29 MWh (−29 MWh) of net generation in 2025.
Where is Station 9 Energy Storage System?
Station 9 Energy Storage System is in Norfolk County, Massachusetts, at 42.1877, −70.9765. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Station 9 Energy Storage System?
EIA-860M for August 2026 lists Town of Braintree - (MA) as the operator (EIA operator ID 2144). The operator is not always the owner.
When did Station 9 Energy Storage System start operating?
Its first generator began operating in June 2018, 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