Martinsville BESS
Battery storage project in Henry County, Virginia. 10.1 MW of nameplate capacity across 1 generator, operated by Onsite Partners, LLC.
Also known as EIA plant 69727
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 10.1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- April 2022First generator online
- Operator
- Onsite Partners, LLCEIA operator ID 60571
- Grid
- PJMBalancing authority PJM
- Price nodes
- None linkedNo verified ISO node
- Location
- Henry County, VA36.6853, −79.8724
- EIA plant ID
- 69727EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Martinsville BESS produces
Free · EIA-923Net generation, 2025
937 MWh
937 MWh, final
Battery discharge, 2025
937 MWh
Charge 5.74 GWh
January to July 2026
Not reported
Provisional. 0 of 7 months reported
| 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 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | Not reported | Not reported | 0 of 12 |
| 2025 | 937 | 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 |
|---|---|---|---|
| MBSS | Batteries | 10.1 | April 2022 |
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 Onsite Partners, LLC 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 Martinsville BESS
More plants operated by Onsite Partners, LLC
Questions about Martinsville BESS
How much power does Martinsville BESS produce?
Martinsville BESS reported 937 MWh (937 MWh) of net generation in 2025.
Where is Martinsville BESS?
Martinsville BESS is in Henry County, Virginia, at 36.6853, −79.8724. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Martinsville BESS?
EIA-860M for August 2026 lists Onsite Partners, LLC as the operator (EIA operator ID 60571). The operator is not always the owner.
When did Martinsville BESS start operating?
Its first generator began operating in April 2022, 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