Pacific Union College BESS
Battery storage project in Napa County, California. 1 MW of nameplate capacity across 1 generator, operated by ENGIE Storage Services NA LLC.
Also known as EIA plant 61795
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- June 2020First generator online
- Operator
- ENGIE Storage Services NA LLCEIA operator ID 61420
- Grid
- CAISOBalancing authority CISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Napa County, CA38.5700, −122.4440
- EIA plant ID
- 61795EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Pacific Union College BESS produces
Free · EIA-923Net generation, 2025
−71 MWh
−71 MWh, final
Battery discharge, 2025
27 MWh
Charge 98 MWh
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2024 to 2025
−85.0–−71.0
MWh a year. Low 2024, 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 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | −1 | Not reported | 7 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 | −85 | Not reported | 12 of 12 |
| 2025 | −71 | 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 |
|---|---|---|---|
| 12649 | Batteries | 1.0 | June 2020 |
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 ENGIE Storage Services NA 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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Questions about Pacific Union College BESS
How much power does Pacific Union College BESS produce?
Pacific Union College BESS reported −71 MWh (−71 MWh) of net generation in 2025.
Where is Pacific Union College BESS?
Pacific Union College BESS is in Napa County, California, at 38.5700, −122.4440. It is in the California Independent System Operator balancing area (CISO).
Who operates Pacific Union College BESS?
EIA-860M for August 2026 lists ENGIE Storage Services NA LLC as the operator (EIA operator ID 61420). The operator is not always the owner.
When did Pacific Union College BESS start operating?
Its first generator began operating in June 2020, 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