Matthias is the Director, Global Policy Research at Energy Innovation, where he works on targeted research projects to advance clean energy policy. He conducts integrated modeling and analysis on coupling low-cost clean electricity systems with zero emission end uses in transport, buildings and industry. He has advised partners around the world, ranging from individual utilities to national energy planning agencies.

Matthias has over 25 years of experience identifying innovative, cost-effective strategies to build clean, reliable power systems and address diverse energy challenges. Before joining Energy Innovation, he led initiatives across academia, industry, and consulting, including creating Switch, a cutting-edge planning model for high-renewable power systems. He has trained teams worldwide to design reliable, clean energy systems for their regions, taught university courses on power system operation and renewable energy integration, and developed efficient techniques to incorporate flexible electricity loads into power systems. His work also includes exploring the benefits of demand-side response for both customers and power system operators, as well as advising utilities and advocates on effective planning for a high-renewable future.

Matthias holds an M.S. and Ph.D. in Energy and Resources from the University of California, Berkeley, where he specialized in optimizing the design of reliable, high-renewable power systems. He also served as a post-doctoral researcher at the Environmental Change Institute at the University of Oxford and spent 10 years as a professor of Electrical Engineering at the University of Hawaii, working on renewable energy planning.