Decarbonizing heavy-duty transportation industries.
Notable Achievements
- Raised a $17M Series A in 2021. The round was led by Breakthrough Energy Ventures and joined by Clean Energy Ventures, John Deere, Phoenix Global Resources, Mercuria and more.
- Signed MOUs with Reviva and Vander Haag’s, Inc., and successfully integrated ClearFlame’s technology into a Class-8 truck, validating the ability to seamlessly bring ClearFlame’s technology to scale using existing transportation solution providers and supply chains.
- Began first pilot fleet trials of Class-8 trucks with Beck’s, highlighting strong interest from commercial fleets.
Press Mentions

December 5, 2022
Tesla's electric Semi faces a long, slow, uphill climb
Tesla's flashy new electric Semi truck isn't very practical for most freight haulers. One Bill Gates-backed startup, ClearFlame, is promoting a simpler way for freight haulers to meet...
Read on Axios »
August 30, 2023
Trucking Urges Zero-Emission Approach That Goes Beyond EVs
Trucking industry aims for zero-emission vehicles by 2050, with companies investing in electric and hydrogen fuel cell technology. Government incentives and infrastructure improvements are needed...
Read on Transport Topics »
November 17, 2022
ClearFlame Engine Technologies Named a "Next Big Thing in Tech" in Fast Company's 2022 Awards
ClearFlame Engine Technologies announced that it has been named to Fast Company's second annual Next Big Things in Tech list in the Transportation category, honoring technology breakthroughs that...
Read on PRNewswire »
September 29, 2022
Long-Haul Trucking Nears The On-Ramp To The Highway To Climate-Friendly Transportation
Electrification is not the answer for heavy duty trucking. Fortunately, there is a different decarbonization option for these trucks that can begin to be more rapidly employed because it can expand...
Read on Forbes »
September 21, 2022
ClearFlame Engine Technologies hits multiple manufacturing, customer pilot, and fueling milestones
ClearFlame Engine Technologies, a company developing net-zero engine technology (earlier post), has hit a number of key milestones through multiple partnerships with customers, manufacturers, and...
Read on Green Car Congress »More Ventures in Energy & Environment
Get the Unreasonable Newsletter
Get monthly updates on ClearFlame Engine Technologies and over 370 other ventures working to solve the world's toughest problems.