Seaflower Energy Storage System Project

The Seaflower Energy Storage System Project, identified by solicitation number PLN 25-0027, involves the construction and operation of a 100 MW / 400 MWh utility scale battery energy storage system in Menifee, California. The facility will utilize lithium iron phosphate or similar battery modules arranged on racks within individual containers, including 102 SolBank 3.0 enclosures. The system is designed to interconnect with the Southern California Edison Valley Substation and will feature automated monitoring and remote management systems, eliminating the need for permanent onsite staff. Site infrastructure will include power conversion equipment, a security fence or wall, and a permanent parking area for periodic maintenance and inspection visits. The project has undergone extensive environmental and technical evaluations, including a Mitigated Negative Declaration, geotechnical investigations, and a Hazard Mitigation Analysis to ensure compliance with the 2022 California Fire Code. Assessments have covered air quality, greenhouse gas emissions, noise levels, and biological resources across the approximately 4 acre site. Cultural resource surveys indicate a low to moderate potential for archaeological deposits, necessitating monitoring during ground disturbance. Traffic analysis suggests minimal impact, with an estimated 9 daily trips. The City of Menifee Planning Commission scheduled a public hearing for October 28, 2026, following a public review period that concluded on October 21, 2026.