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John Holler

Senior Fellow, Low-Carbon Fuels and Transportation
The Center for Climate and Energy Solutions (C2ES)
John Holler is the Low-Carbon Fuels and Transportation Senior Fellow at the Center for Climate and Energy Solutions (C2ES). He researches and analyzes the technologies, markets, and policies required to advance widespread adoption of low-carbon fuels toward the decarbonization of hard-to-abate sectors. Mr. Holler engages with the organization’s technology working groups, regional roundtables, and policy advocacy campaigns.

Participated in

session

Cleared for Takeoff: Designing the Next Decade of Climate-Ready Aviation

October 28, 2025
session

Sustainable Aviation Fuel: A Flightpath to 2030

October 30, 2024
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