Blue Current has closed a Series D extension totaling more than $80 million, a round anchored by Amazon and joined by Koch Disruptive Technologies, Piedmont Capital, Rusheen Capital Partners, and Allen & Company.
The investment advances the company into its commercialization phase as it works to deliver safe, high-performance silicon solid-state batteries built for mobility systems and stationary energy storage.
As part of the funding announcement, Amazon Senior Vice President and Distinguished Engineer James Hamilton will join the company’s board of directors. Blue Current said the additional capital will accelerate efforts to scale its silicon composite battery platform, which the company designed from first principles to improve energy density, shorten charging times, enhance safety, and operate at low pressure without relying on flammable liquid electrolytes.
The company’s platform uses earth-abundant silicon and elastic polymer anodes paired with fully dry electrolytes. Its design approach supports multiple formulations and allows the batteries to be manufactured cost-effectively using widely deployed lithium-ion equipment. Blue Current emphasized that this combination of safety, performance, and manufacturability positions it to support both next-generation electric mobility and grid-scale energy storage.
The company noted that more than a decade of research and development has gone into creating batteries intended to reduce fire risk, increase cycle life, and improve charging speed. With new funding and Amazon’s participation, Blue Current is preparing for the next stage of commercial deployment and aims to address market limitations that have slowed the adoption of solid-state solutions.
Amazon’s participation signals continued interest in advancing domestic battery manufacturing and exploring technologies that can support longer-range electric vehicles and grid storage with improved safety. Blue Current’s headquarters and pilot line facility are located in Hayward, California.
KEY QUOTES
“To meet the urgent energy demands of today’s technology-driven world we need a de-risked approach to solid-state battery commercialization that unlocks domestic manufacturing capacity. Our technology platform fundamentally addresses the mobility and stationary storage sectors’ unique needs on an accelerated timeline to safely and reliably power the world. This commercialization phase will enable multiple high-value use cases that will allow us to quickly move to a safe and effective commercially available next-generation battery.”
Susan Stone, CEO of Blue Current
“Our team has dedicated more than a decade of research and development into creating an industry-leading battery that sets our technology apart from other approaches. By prioritizing battery safety as our north star from day one, we came to our silicon-based design, not only drastically reducing fire risk but greatly improving energy density, cycle life, and charging speed. With KDT’s continued investment and Amazon’s investment, we look forward to entering the next stage of commercialization and overcoming current market limitations to energy storage.”
Kevin Wujcik, Co-Founder and Chief Technology Officer at Blue Current
“Blue Current has a missionary approach to transforming battery technology and their talented team is pioneering solid-state batteries that address the need for safe, high-performance, U.S.-based solutions. Scaling new battery solutions requires more than lab breakthroughs – and Blue Current’s approach could make solid-state batteries more affordable and accelerate their adoption to meet the growing demand for stationary storage and longer-range electric vehicles with faster charging times. We’re excited to see what they do next.”
James Hamilton, Senior Vice President and Distinguished Engineer at Amazon
