EVLO announces successful delivery of 12.8MW/64MWh BESS for first California project

LinkedIn
Twitter
Reddit
Facebook
Email

System integrator EVLO Energy Storage (EVLO) has completed delivery of the BESS units for a 12.8MW/64MWh California BESS project, its first in the state.

Announced 10 December, the BESS will be commissioned in spring 2025 by the unnamed project owner. An offtake agreement was reached with a Southern California Community Choice Aggregator (CCA).

EVLO, a subsidiary of Hydro-Québec, has had success with BESS projects in Canada in Europe. In 2023, the company was selected to provide a 60MWh BESS in Ontario.

The California BESS is comprised of 64 EVLO 1000 units and 16 power conversion system (PCS) units. EVLO’s proprietary energy management system (EMS), EVLOGIX will manage the project.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Its 5-hour duration is notable since most BESS projects in California are 4-hour systems.

Energy-Storage.news spoke with a representative for EVLO who verified that the EVLO 1000 units are separate storage solutions from both EVLOFLEX and EVLO SYNERGY, its latest-generation products.

While the company’s website does not contain details about the EVLO 1000, a 2021 announcement from Hydro-Québec states that “EVLO 1000 is a 1-MWh battery energy storage system designed for large-scale projects.”

“Aimed mainly at electricity generators, transmission providers and distributors, the system has varied applications, including renewable-energy integration, microgrids, peak shaving, backup power and grid resilience.”

Details about the CCA have not been released at the time of publication, however, EVLO’s President and CEO, Sonia St-Arnaud, did say that the end customer had “very stringent requirements in terms of safety and cyber security.”

Affirmed by St-Arnaud and evidenced by the deal, the customer’s requirements for the project were met.

In November, EVLO’s EVOFLEX configurable BESS was recertified for the UL9540 standard as requested by Virginia utility Dominion Energy.

California, aiming to achieve carbon neutrality and reduce anthropogenic emissions 85% below 1990 levels by 2045, has seen a myriad of BESS projects recently.

Developer Strata Clean Energy completed the 70MW/280MWh Inland Empire Storage Project in early December, and Fengate Asset Management in collaboration with Alpha Omega Power closed a tax equity commitment with US Bancorp Impact Finance for the 400MWh Caballero energy storage project in late November.

EVLO’s first US project was the 3MW/12MWh BESS commissioned in August, in Troy, Vermont with a 20-year long-term service agreement with Vermont utilities including Vermont Electric Cooperative. The Vermont BESS is also comprised of 16 EVLO 1000 units with four PCS platforms.

This article has been updated from its original version to reflect inaccurate information originally provided to Energy-Storage.news stating that the EVLO BESS units were 12MW/64MWh, creating a 5.3 hour duration.

3 November 2026
Málaga, Spain
Understanding technology and supplier selection for Europe’s utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.
26 November 2026
9am GMT / 1pm GST
In this webinar, Florian Didier and Salomé Perperot from Clean Horizon share the approach they use when supporting IPPs through optimiser selection and contract negotiation across Europe. The presentation will be followed by a live Q&A session in which attendees can put their own questions to the speakers. Who should attend: IPPs and developers, asset owners and investors, lenders and financial advisors, and anyone involved in the commercial structuring of battery storage projects.
22 February 2027
InterContinental London - The O2, London, UK
The Future of Energy Storage Starts Here Three days in London where developers, IPPs, investors, utilities and the manufacturers building the technology come to close deals, not swap business cards. If you need to be in the room with the people deploying capital into European storage, this is that room.

Read Next

Premium
November 3, 2026
ESN Premium speaks with Zane Zhou of CATL Australia and New Zealand, about TENER+, sodium-ion demand, the Collie BESS and more.
November 3, 2026
Revera Energy has doubled its holdco credit facility from US$150 million to US$300 million to fund its BESS pipeline in the UK and Australia.
November 3, 2026
Victoria’s SEC secures 10-year Glenrowan BESS offtake as Gentari’s first BESS units arrive at NSW’s Maryvale solar-storage project.
Premium
November 2, 2026
US President Donald Trump’s 26 August emergency executive order banning imports of certain foreign-made power equipment has prompted widespread public comment and private concern across the energy storage industry.
November 2, 2026
Two Australian battery storage projects in Queensland and Victoria have entered federal environmental review, with AGL Energy and developer ACEnergy each submitting referrals under the same national process.