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Andrew Hoover

Principal, Risk Management & Product Compliance
Redwood Materials
Andrew Hoover, Principal of Risk Management + Product Compliance, leads Redwood Energy’s regulatory strategy, risk management, product compliance, and standards development for Redwood Materials, a company involved with battery recycling and repurposing, cathode active material (CAM) manufacturing, and energy storage system (ESS) manufacturing and decommissioning.

Previously at Tesla, he led the toxicology program and managed global chemical compliance across Gigafactories and cell manufacturing — building deep expertise in the hazards and safe handling of battery materials at industrial scale.

He was instrumental in the development of NFPA 800, Battery Safety Code — the world’s first comprehensive code addressing battery safety across the full lifecycle, from manufacturing through recycling and disposal. He also contributes to the evolution of key UL standards governing the battery industry, chairing several task groups for UL 9540 (Standard for Energy Storage Systems and Equipment) and UL 1974 (Standard for Evaluation for Repurposing Batteries), where he helps shape requirements for ESS safety and second-life battery evaluation.

Andrew also recently chaired the Cathode Active Material Science Alliance (CAMSA), a cross-industry group dedicated to studying the long-term health effects of high-nickel cathode active materials such as NMC and NCA.

Participated in

session

Battery Circularity: Where the Gaps Are and What Moves the Needle

June 24, 2026
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