Redwood Materials Closes $350 Million in Series E to Accelerate Energy Storage

Redwood Materials, powering America’s energy future, led by JB Straubel, Chris Lister, Colin Campbell, Cal Lankton, Mandy Clark, and others, has secured a $350 million Series E funding round, led by Eclipse with participation from new strategic investors, including NVentures (NVIDIA’s venture capital arm).  

The oversubscribed round underscores strong momentum across Redwood’s two core business lines: Critical Materials, including cobalt, nickel, copper, lithium, and cathode active materials, and Grid Energy Storage, focused on delivering large-scale, low-cost systems with seamless integration.

This is a pivotal moment for Redwood and the U.S., as global supply constraints meet soaring domestic demand for materials and energy.

Large-scale, low-cost battery storage has become the fastest, most scalable way to power AI infrastructure and unlock stranded grid capacity, supporting industrial electrification, stabilizing renewables, and strengthening America’s energy resilience.

Redwood is building the next generation of U.S.-made energy storage systems, scalable, low-cost, and powered by advanced materials, manufacturing, and software. These systems will supply data centers, industry, and the grid while reducing reliance on imported LFP batteries.

This new funding will accelerate the expansion of Redwood’s storage deployments, refining and materials capacity, and world-class engineering teams. The company is actively recruiting those ready to shape America’s next era of energy leadership and critical minerals independence.