The Soboba Band of Luiseño Indians has taken ownership of a solar-plus-storage microgrid at its fire station near San Jacinto, California, following a ribbon-cutting ceremony and handover announced by Invinity Energy Systems on 9 November 2026.
The system combines three Invinity VS3 vanadium flow battery containers with a 50 kW onsite solar array and 0.5 MWh (500 kWh) of storage. It is designed to provide at least 10 hours of backup power to the fire station and emergency-response facilities. The California Energy Commission lists the project as a 50 kW/500 kWh installation supported by a $1.7 million grant to GRID Alternatives, which developed the project with CEC and Soboba Band support. The CEC says the system may operate for 24 hours or longer when solar production is high, depending on load, weather and battery state of charge.
Resilience in a high-fire-threat zone
The reservation is in a Tier 3 Extreme High Fire Threat Zone and has experienced repeated outages, including interruptions lasting more than 24 hours, according to Invinity. The fire station also functions as an incident-command location and community resource during major emergencies, making backup duration and islanded operation central to the project's value. The microgrid can separate from the larger grid during outages to support the fire station and its emergency operations center.
Invinity cites the vanadium flow battery's water-based electrolyte as a safety advantage: it is non-flammable and does not experience thermal runaway, a relevant attribute at a critical facility in a high-fire-threat area.
What the handover does and does not show
The announcement advances the project's public status from delivery and installation to ceremonial handover but does not disclose a commissioning date, measured outage performance, final project cost or operational savings. Ownership transfer confirms control of the asset but does not by itself establish how the system has performed during an extended utility interruption.
The Soboba project adds to a longer history of tribal microgrid development in California, including an earlier solar microgrid on the Chemehuevi reservation. The common operating question is whether local generation and long-duration storage can keep critical facilities functioning when utility service is unavailable.
This article was assisted by AI analysis. Please refer to the original source for official information.