A fire broke out at the Moss Landing Energy Storage Facility in Central California Thursday. The battery power plant is the largest in the world according to the company, Vistra, that owns it.

The Monterey County Sheriff’s Office issued evacuation orders for nearby residents and closed parts of Highway 1 in response. County Health officials have asked other residents to shelter indoors with windows and doors closed and to switch off ventilation systems.

The company will investigate the cause of the fire once it’s out, Vistra spokesperson Jenny Lyon told The Mercury News. Vistra did not immediately respond to an email from The Verge. It completed an expansion of the facility in 2023, adding more than 110,000 battery modules needed to store renewable energy. Energy storage facilities like this one are essential for power grids to be able to keep enough excess solar and wind energy so it’s available when the sun goes down and winds wane.

This isn’t the first battery fire in the area. A nearby Pacific Gas & Electric battery plant stocked with Tesla batteries caught fire back in 2022. The year prior, Vistra had to temporarily shut down its battery plant at Moss Landing after a malfunctioning smoke detector and heat-suppression system sprayed water on its batteries, Canary Media reported.