Hagan Han is a Master of Public Policy candidate at the Yale Jackson School of Global Affairs, specializing in climate and environmental policy with an emphasis on implementation, equity, and trade issues. 

In the summer of 2025, he served as an Environmental Defense Fund Climate Corp Fellow at the East Central Florida Regional Planning Council in Orlando. There, he led the team’s land use and agricultural analysis, integrating mitigation, conservation, and adaptation priorities for the region’s first Climate Action Plan. As part of this work, he quantified potential avoided emissions from conserving land that was meant for development, prioritizing ecosystems identified in Marxan conservation modeling. 

Before Yale, Hagan worked at Clean Air Task Force on federal clean hydrogen policy. He led the team’s advocacy on the 45V Hydrogen Production Tax Credit, evaluating emission accounting methodologies for carbon-based and electricity-based hydrogen to incentivize truly low-carbon production. He also analyzed the Environmental Protection Agency’s 111(d) power plant regulations, conducting techno-economic assessments of hydrogen co-firing as an emissions reduction strategy.

Earlier in his career at Air Products and Chemicals, Hagan worked in various engineering, operations, and business roles. He provided 24/7 on-call support for hydrogen pipeline operations serving over 40 customers, assessed commercial opportunities for low-carbon ammonia, supported maintenance outages on hydrogen and carbon capture plants, modeled patented natural gas liquefaction processes, and negotiated equipment replacements in Algeria. 

Originally from Los Angeles and Shanghai, Hagan graduated cum laude from Cornell University with a degree in chemical engineering. He is fluent in Mandarin and Cantonese and is conversational in French.