Valley Center 85
Battery storage project in San Diego County, California. 85 MW of nameplate capacity across 1 generator, operated by Terra-Gen Operating Co-BESS 2.
Also known as EIA plant 66500
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 85 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2021First generator online
- Operator
- Terra-Gen Operating Co-BESS 2EIA operator ID 65552
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- San Diego County, CA33.2272, −117.0177
- EIA plant ID
- 66500EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Valley Center 85 produces
Free · EIA-923Net generation, 2025
−13.8 GWh
−13,820 MWh, final
Battery discharge, 2025
59.6 GWh
Charge 73.5 GWh
January to July 2026
−9.00 GWh
Provisional
Range, 2023 to 2025
−18.0–−13.8
GWh a year. Low 2023, 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 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | −17,993 | Not reported | 12 of 12 |
| 2024 | −17,269 | Not reported | 12 of 12 |
| 2025 | −13,820 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −8,995 | 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 |
|---|---|---|---|
| VC85 | Batteries | 85.0 | December 2021 |
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 Terra-Gen Operating Co-BESS 2 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 Valley Center 85
More plants operated by Terra-Gen Operating Co-BESS 2
Questions about Valley Center 85
How much power does Valley Center 85 produce?
Valley Center 85 reported −13,820 MWh (−13.8 GWh) of net generation in 2025. From January to July 2026 it reported −9.00 GWh, which is provisional.
Where is Valley Center 85?
Valley Center 85 is in San Diego County, California, at 33.2272, −117.0177. It is in the California Independent System Operator balancing area (CISO).
Who operates Valley Center 85?
EIA-860M for August 2026 lists Terra-Gen Operating Co-BESS 2 as the operator (EIA operator ID 65552). The operator is not always the owner.
When did Valley Center 85 start operating?
Its first generator began operating in December 2021, according to EIA-860M.
Does InfraMap have power prices for Valley Center 85?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Valley Center 85, 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