Blue Current: Over $80 Million Series D Extension Anchored By Amazon To Commercialize Silicon Solid-State Batteries
By Amit Chowdhry ● Dec 15, 2025
Blue Current, a Hayward, California-based developer of silicon solid-state batteries, has closed a Series D extension funding round of more than $80 million, anchored by Amazon, with participation from Koch Disruptive Technologies, Piedmont Capital, Rusheen Capital Partners, and Allen & Company. The company said the financing is intended to accelerate the commercialization of its silicon composite solid-state battery platform for mobility and stationary energy storage applications, positioning the technology as a safer, higher-performing alternative to conventional lithium-ion batteries.