Cal Flats BESS
Battery storage project in Monterey County, California. 60 MW of nameplate capacity across 1 generator, operated by Arevon Energy, Inc..
Also known as EIA plant 63930
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 60 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- November 2021First generator online
- Operator
- Arevon Energy, Inc.EIA operator ID 61230
- Grid
- CAISOBalancing authority CISO
- Price nodes
- 1 CAISO nodeResource nodes with prices
- Location
- Monterey County, CA35.8667, −120.3294
- EIA plant ID
- 63930EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Cal Flats BESS produces
Free · EIA-923Net generation, 2025
−11.0 GWh
−10,995 MWh, final
Battery discharge, 2025
56.8 GWh
Charge 67.8 GWh
January to July 2026
−5.91 GWh
Provisional
Range, 2022 to 2025
−12.7–−6.3
GWh a year. Low 2023, high 2022
| 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 | 3,676 | Not reported | 2 of 12 |
| 2022 | −6,294 | Not reported | 12 of 12 |
| 2023 | −12,670 | Not reported | 12 of 12 |
| 2024 | −11,797 | Not reported | 12 of 12 |
| 2025 | −10,995 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −5,906 | 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 |
|---|---|---|---|
| CF60 | Batteries | 60.0 | November 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 Arevon Energy, Inc. 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 Cal Flats BESS
More plants operated by Arevon Energy, Inc.
Questions about Cal Flats BESS
How much power does Cal Flats BESS produce?
Cal Flats BESS reported −10,995 MWh (−11.0 GWh) of net generation in 2025. From January to July 2026 it reported −5.91 GWh, which is provisional.
Where is Cal Flats BESS?
Cal Flats BESS is in Monterey County, California, at 35.8667, −120.3294. It is in the California Independent System Operator balancing area (CISO).
Who operates Cal Flats BESS?
EIA-860M for August 2026 lists Arevon Energy, Inc. as the operator (EIA operator ID 61230). The operator is not always the owner.
When did Cal Flats BESS start operating?
Its first generator began operating in November 2021, according to EIA-860M.
Does InfraMap have power prices for Cal Flats BESS?
Yes. InfraMap has CAISO day-ahead and real-time prices at 1 price node linked to Cal Flats BESS, 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