MOSS LANDING — Monday, the Environmental Protection Agency began overseeing cleanup of the lithium-ion batteries that burned in a massive fire at the Moss Landing Power Plant in January. The effort, which involves removing tens of thousands of damaged battery modules, is the largest lithium-ion battery cleanup in the EPA’s history.

On Jan. 16, lithium-ion batteries located in the Moss Landing storage facility and owned by Vistra, a Texas-based energy company, ignited and burned for two days. The fire, which burned about 55% of what was at the time the world’s largest battery energy storage system, made international headlines and caused local concern and confusion over the possible environmental and health effects of the disaster.

Vistra’s 300-megawatt battery energy storage system con

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