Mathias Zacarias

Mathias Zacarias is an associate fellow and energy transitions fellow in the Energy Security and Climate Change Program at the Center for Strategic and International Studies (CSIS). In this role, he covers low-carbon diplomacy and low-carbon innovation, with a focus on hydrogen, low-carbon fuels, and carbon management technologies. He also supports research on power sector decarbonization, clean energy supply chains, green industrial policy, and energy markets. Prior to joining CSIS, he worked as a graduate research assistant at the Georgia Institute of Technology, as an advocacy research volunteer at the Southface Institute, and as an intern in the CSIS Energy Security and Climate Change Program. He holds an MS and BS in civil engineering from the Georgia Institute of Technology, with minors in sustainable cities and German.
In the News
US 45V hydrogen tax credit: lifeline or short-term solution?
Mathias Zacarias in Kallanish Commodities — October 21, 2024
All Mathias Zacarias Content
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Experts React: Energy Policy in the Reconciliation Debate
Commentary by Joseph Majkut, Clayton Seigle, Kyle Danish, Leslie Abrahams, Jane Nakano, Arushi Sharma Frank, and Mathias Zacarias — May 15, 2025
Experts React: Energy Policy in the Reconciliation Debate
Podcast Episode by Joseph Majkut, Clayton Seigle, Kyle Danish, Leslie Abrahams, Jane Nakano, Arushi Sharma Frank, and Mathias Zacarias — May 15, 2025

Understanding 45V and Clean Hydrogen’s Importance to U.S. Energy Leadership
Podcast Episode by Mathias Zacarias — April 23, 2025

Understanding 45V and Clean Hydrogen’s Importance to U.S. Energy Leadership
Critical Questions by Mathias Zacarias — April 23, 2025
U.S. Low-Carbon Leadership
Brief by Mathias Zacarias, Ray Cai, and Joseph Majkut — March 6, 2025
Experts React: COP29 Highlights, Challenges, and Emerging Trends in Global Climate Policy
Commentary by Jane Nakano, Noam Unger, Ray Cai, Mathias Zacarias, Wilder Alejandro Sánchez, Quill Robinson, and Zach Slotkin — November 26, 2024
Powering Progress: Deploying U.S. Clean Technologies in Emerging Economies
Event — October 24, 2024
Power Plays: Europe’s Response to the Energy Crisis
Report by Max Bergmann, Cy McGeady, Otto Svendsen, Mathias Zacarias, and Ignacio Urbasos — September 3, 2024
What Happened to Hydrogen in the EPA’s Power Plant Rule?
Critical Questions by Mathias Zacarias and Joseph Majkut — June 12, 2024
What Happened to Hydrogen in the EPA’s Power Plant Rule?
Podcast Episode by Mathias Zacarias and Joseph Majkut — June 12, 2024
