Team
Leadership
Our team has spent decades constantly pushing the advanced energy industry forward into exciting, uncharted territory.
Meet the Team

Dr. Keith Kepler
Chief Technology Officer
Dr. Kepler began his foray into advanced energy research & development as part of his higher education experience. Armed with a BS in Materials Science, an MS in Chemistry, and his PhD in Chemistry, he spent time at both Argonne National Laboratories and PolyStor Corporation before co-founding Farasis Energy in 2002. Since then, he’s headed Farasis as the Chief Technology officer.

Dr. Madhuri Thakur
Director of Research & Development
Dr. Thakur brings a long history as a research and material scientist. During her years of formal education, including earning her PhD in Physics, she began specializing in developing and optimizing lithium-ion battery technology. Her hard work and research—which includes exploring fast-charging capabilities—has situated her at the forefront of many advanced energy breakthroughs, particularly with silicon anodes.
Through her years of study and practical application, Dr. Thakur gained extensive experience taking li-ion technology from idea conceptualization to commercialization. She has authored and co-authored several published works exploring the nuances of materials selection in lithium-ion battery applications.

Jack Johnson
Chief Executive Officer
Jack is an advanced energy storage expert and the co-founder of two unique technology companies specializing in mobile and grid energy storage. As an engineer, Jack was instrumental in the development of US lithium-ion infrastructure. As a businessman, he pays careful attention to strategic objectives, problem solving and team development. While his career is steeped in driving innovation and lean process improvement, Jack also cultivates deep, meaningful, lasting partnerships and business relationships across industries.

Marcel Brömlage
Plant Manager
Marcel brings a long history with the automotive industry and adjacent technologies. He’s spent decades honing his project management and high-level operations roles for a variety of companies, most recently as the General Manager of Farasis Energy Europe & USA.

Tiffany Ling
Director of Human Resources
Tiffany Vuong Ling, a seasoned professional with over 20 years of experience in Human Resources across diverse industries including nonprofit, private equity, manufacturing and logistics, specialty pharmacy, and now, lithium-ion battery. Armed with a Master’s in Public Administration, Tiffany has honed her expertise in fostering growth opportunities and advocating for employees, all while maintaining a delicate balance between organizational needs and employee welfare.
Elevate Your Energy
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