Battery recycling and materials production, with an energy storage division using second-life EV batteries.
Founders
JB Straubel(United States · ♂)— Tesla's co-founder and longtime CTO who, after 15 years building EV batteries and the Gigafactory, founded Redwood Materials in 2017 to recycle lithium-ion batteries and close the battery-materials loop.
Funding history
Date
Round
Amount
Oct 2025
Series D Plus
Redwood Materials closed a $350 million Series E led by Eclipse Ventures at a $6 billion valuation.
$425M
Investors
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