A fire at the world’s largest battery storage plant in Northern California is smoldering after sending plumes of toxic smoke into the atmosphere.

One of the world’s largest lithium battery plants went up in flames on Thursday, prompting evacuations and warnings to stay inside in Monterey County.

Fire crews are waiting for the flames to die out as lithium-ion batteries are tough to put out, as the flames continue to rise from the world’s largest lithium battery storage plant in California.