Fullmark Energy, a leading independent power producer specializing in energy storage, has announced the start of commercial operations for its 65MW/130MWh San Jacinto storage project in Banning, California. This achievement marks the completion of Fullmark Energy’s Redwood Projects portfolio—a strategic collection of battery energy storage systems across Southern California—each designed to enhance grid reliability and support the state’s renewable energy transition.
The announcement was commemorated with a ribbon-cutting ceremony at the San Jacinto facility, located at 300 Galleher Way in Banning. The event brought together key stakeholders and partners, including InfraRed Capital Partners, TWAICE, and representatives from Fullmark Energy, who celebrated the company’s latest operational milestone.
San Jacinto is Fullmark’s third project to reach commercial operations in 2025, following the earlier success of the 20MW/40MWh Desert-Carris project in Palm Springs and the 20MW/40MWh Ortega project in Lake Elsinore. Together with the earlier 20MW/80MWh Johanna ESS facility in Santa Ana, which became operational in 2021, these projects make up the complete Redwood portfolio—collectively adding 125MW/290MWh of capacity to the Southern California Edison distribution system.
Chris McKissack, Chief Executive Officer of Fullmark Energy, highlighted the achievement as a defining moment for the company. “Reaching commercial operations across the Redwood Projects marks a major milestone for our team and our partners,” he said. “These projects strengthen grid reliability, accelerate the renewable energy transition, and demonstrate our ability to deliver high-performing assets at scale. San Jacinto is particularly meaningful because it showcases how energy storage can enhance infrastructure while revitalizing communities and creating long-term value for local stakeholders.”
The San Jacinto facility is also a strong example of how energy storage development can drive community revitalization. The 65MW site was built on previously abandoned and overgrown property that had become a concern for nearby residents and businesses. In collaboration with local partners, Fullmark Energy transformed the neglected area into a modern, well-secured energy asset complete with fencing, lighting, and landscaping improvements. The project now provides both environmental and economic benefits, contributing to the City of Banning’s municipal electric utility, which serves approximately 13,500 customers.
“The completion of our Redwood Projects demonstrates our operational maturity and ability to execute complex projects from start to finish,” McKissack added. “With the Redwood portfolio fully operational, we’re advancing our next set of projects—including the 80MW Chiquito facility in California—and expanding into Texas with the 500MW Ramsey and 250MW East Valley projects. The experience gained from Redwood positions us to deliver similar success across our 4GW pipeline, all while upholding our focus on operational excellence, community partnership, and sustainable growth.”
The Redwood Projects collectively represent one of the largest independently owned battery storage portfolios in Southern California. Developed with diversified offtake agreements, the portfolio enhances revenue stability and minimizes operational risk. In January 2023, Fullmark Energy secured $100 million in financing through a consolidated term loan and letter of credit facility to support the development of these assets. All four projects actively participate in the California Independent System Operator (CAISO) market, providing essential grid services such as energy arbitrage, frequency regulation, and resource adequacy—reinforcing Fullmark Energy’s role as a key contributor to California’s clean energy and grid resilience goals.
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