Meet an Unreasonable Venture

ClearFlame Engine Technologies

Decarbonizing heavy-duty transportation industries.

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Employees 21–50

Headquarters Geneva, Illinois, United States

Founded in 2016 as a Black- and Women-founded and led business, ClearFlame Engine Technologies is developing a cost-effective solution to decarbonize the “hard-to-electrify” segments of the transportation sector. Their target markets include engines and vehicles in the long-haul trucking, agricultural, construction, and other non-road diesel engine sectors that have decades of use. By breaking the bond between the diesel engine and diesel fuel, ClearFlame engines eliminate the emissions of diesel particulate matter (PM) and NOx that increase asthma emergencies and threaten health in disadvantaged communities that live with disproportionate levels of diesel pollution, while also reducing GHG emissions.

Energy & Environment

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.

Currently Operating in One Region

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Press Mentions

May 31, 2024

PEP Insights Energy Transition Spotlight: ClearFlame Engine Technologies

ClearFlame Engine Technologies is gaining attention for their innovative engine technology that can run on low-carbon and renewable fuels, offering a promising solution for reducing emissions in...

Read on NetZero Bulletin »

February 20, 2024

Ethanol fuel proves to be a solution for lower GHG emissions

Ethanol fuel is highlighted as a solution for reducing greenhouse gas emissions. The article discusses the benefits of using ethanol as a cleaner alternative to traditional gasoline, emphasizing...

Read on ajot »

January 3, 2024

ACT News Talks Tech: ClearFlame's BJ Johnson - ACT News

ClearFlame, a startup focused on decarbonizing heavy-duty engines, is developing a technology that allows diesel engines to run on ethanol, reducing emissions. The company aims to provide a...

Read on ACT News »

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 »

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 »

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 »