Bottleneck Energy Storage
Battery storage project in Tulare County, California. 80 MW of nameplate capacity across 1 generator, operated by VESI 12 LLC.
Also known as EIA plant 66757
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 80 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 2024First generator online
- Operator
- VESI 12 LLCEIA operator ID 65754
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Tulare County, CA35.8384, −119.0884
- EIA plant ID
- 66757EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Bottleneck Energy Storage produces
Free · EIA-923Net generation, 2025
−13.4 GWh
−13,392 MWh, final
Battery discharge, 2025
74.0 GWh
Charge 87.4 GWh
January to July 2026
−10.00 GWh
Provisional
| 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 | −1,450 | Not reported | 3 of 12 |
| 2025 | −13,392 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −9,995 | Not reported | 7 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 account · CAISOEmissions
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 |
|---|---|---|---|
| BN1 | Batteries | 80.0 | October 2024 |
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 VESI 12 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 Bottleneck Energy Storage
How much power does Bottleneck Energy Storage produce?
Bottleneck Energy Storage reported −13,392 MWh (−13.4 GWh) of net generation in 2025. From January to July 2026 it reported −10.00 GWh, which is provisional.
Where is Bottleneck Energy Storage?
Bottleneck Energy Storage is in Tulare County, California, at 35.8384, −119.0884. It is in the California Independent System Operator balancing area (CISO).
Who operates Bottleneck Energy Storage?
EIA-860M for August 2026 lists VESI 12 LLC as the operator (EIA operator ID 65754). The operator is not always the owner.
When did Bottleneck Energy Storage start operating?
Its first generator began operating in October 2024, according to EIA-860M.
Does InfraMap have power prices for Bottleneck Energy Storage?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Bottleneck Energy Storage, 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)
- CAISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page