Fengate and Alpha Omega Power Launch 100MW/400MWh Battery Energy Storage System in California After Extensive Fire Training

Fengate and Alpha Omega Power’s California BESS Operational After Rigorous Fire Training
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Fengate Asset Management and Alpha Omega Power (AOP) have successfully commenced commercial operations of their 100MW/400MWh Caballero battery energy storage system (BESS) located in San Luis Obispo County, California. Acquired from Origis Energy, Caballero represents the first investment made by Fengate and AOP since their partnership began in 2023.

Fengate is managing this investment for the Fengate Infrastructure Fund IV and its affiliated entities, including contributions from the LiUNA Pension Fund of Central and Eastern Canada. The project was funded by MUFG Bank and US Bancorp Impact Finance, which provides capital for the renewable energy sector through tax equity and project finance debt.

Strategically situated near the Pacific Gas and Electric (PG&E) Mesa Substation, Caballero is an integral part of PG&E’s power system serving the California central coast and the PG&E Kern interconnection area.

In June 2025, local news outlet KEYT reported that firefighters from various agencies participated in extensive training sessions at the Caballero BESS facility over a two-week period. The San Luis Obispo County Fire Department stated that these exercises were designed to familiarize fire responders with the facility’s layout, fire protection measures, and appropriate response procedures.

Origis Energy, in its filing to California authorities, outlined the implementation of fire and hazard safety protocols for Caballero. This included collaboration with the local fire department to educate them on the BESS and effective fire suppression methods.

Earlier this year, the California Public Utilities Commission (CPUC) established new operating standards for battery energy storage systems within the state. One crucial requirement mandates that battery storage facility owners develop emergency response and action plans, as stipulated by state Senate Bill (SB 38).

Fengate and AOP indicated that Caballero underwent “rigorous testing and training” alongside Cal Fire, as well as the San Luis Obispo City and County Fire Departments, during both the construction and testing phases. The companies assert that the project “meets or exceeds all local, state, and federal safety requirements, including California Fire Codes and the latest National Fire Protection Association (NFPA) 855 standards for energy storage.”

### Arevon’s 200MW/400MWh Peregrine BESS Begins Commercial Operations

In another development within California, renewable energy developer Arevon Energy has launched commercial operations for the 200MW/400MWh Peregrine BESS located in the Barrio Logan community of San Diego. This facility marks Arevon’s fifth utility-scale energy storage project in the state.

The $300 million Peregrine project was developed, owned, and operated by Arevon, which secured $258 million in financing for the project earlier this year. The company also closed on a land financing facility with sustainable infrastructure investor HASI, solidifying its ownership of both the project and the underlying land.

During peak construction, Peregrine employed over 90 full-time personnel and is projected to provide long-term property tax benefits exceeding $28 million over its operational lifetime. The facility utilizes Tesla’s Megapack 2 XL lithium iron phosphate (LFP) batteries, with engineering, procurement, and construction (EPC) services provided by Rosendin, a previous supplier for Arevon.

Arevon currently operates more than 3.2GW of renewable energy and has over 800MW of renewable energy projects under construction in California. Recent activities also include the commencement of operations for the Eland 1 solar-plus-storage, Vikings, and Condor energy storage projects.