Redwood Materials built record grid storage project using old EV batteries

Published on July 2, 2025

I was supposed to be looking at the largest energy-storage installation ever assembled from used electric-vehicle batteries, the tantalizing new side project of former Tesla Chief Technology Officer JB Straubel’s recycling juggernaut, Redwood Materials . Instead, all I saw was a dusty field strewn with oddly shaped…

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