Redwood Materials

Redwood Materials recycles batteries and turns the recovered metals into new battery materials. JB Straubel, a co-founder and former chief technology officer of Tesla, founded the company in 2017. It is based in Carson City, Nevada.

Redwood collects used lithium-ion batteries from phones, laptops, electric vehicles and factory scrap. It recovers lithium, nickel, cobalt and copper and refines them for reuse. It then supplies these metals and other battery parts back to cell makers, which reduces the need for new mining and imports.

The company works with carmakers and battery makers, including Toyota, Panasonic, Ford and Volkswagen. In 2025 it started Redwood Energy, which turns used electric vehicle batteries that still hold charge into energy storage systems, including systems for data centers. Its main plant is near Reno, Nevada, and it is building another in South Carolina. JB Straubel is chief executive. The company has raised several funding rounds and remains privately held.