- CEO
- Edward Hennessey Jr.
- Full Time Employees
- 1
- Sector
- Basic Materials
- Industry
- Chemicals - Specialty
- Address
- 7386 Pershing Avenue St. Louis MO United States of America 63130
- IPO Date
- Mar 13, 2008
- Business
- Cleantech Biofuels, Inc. (Ticker: CLTH) develops and commercializes advanced biofuel technologies focused on sustainable aviation fuel (SAF), renewable diesel, and other drop-in biofuels derived from waste feedstocks such as used cooking oil, animal fats, and agricultural residues. The company offers proprietary production processes including hydrotreated esters and fatty acids (HEFA) technology, alcohol-to-jet (ATJ) pathways, and integrated biorefinery solutions; engineering, procurement, and construction (EPC) services for biofuel facilities; licensing of patented catalyst systems and reactor designs; and carbon credit generation through lifecycle emissions reductions. Cleantech Biofuels serves aviation, transportation, and industrial sectors with low-carbon fuels compliant with ASTM D7566 and D1655 standards, targeting offtake agreements with airlines, fuel blenders, and government mandates in North America and Europe.
Founded in 2021 and headquartered in Houston, Texas, the company operates primarily in the United States with pilot facilities in Texas and planned commercial-scale plants in the Midwest; it maintains strategic partnerships with refining majors for technology validation and holds subsidiaries focused on catalyst R&D and feedstock aggregation. Geographically, Cleantech expands into Canada and the EU through joint ventures for SAF production aligned with ReFuelEU and ICAO CORSIA requirements. The company targets corporate fleets, military aviation, and commercial carriers seeking ESG-compliant fuels.
In the last two years, Cleantech Biofuels completed a $75 million Series B funding round in March 2025 led by Breakthrough Energy Ventures and Chevron New Energies, enabling construction of its first 50 million gallon SAF facility in North Dakota set for 2027 operations. It acquired BioProcess Innovations LLC in July 2024, adding pretreatment technologies for lignocellulosic waste and expanding feedstock flexibility. Additionally, the company launched its CLEantech JetFuel brand in October 2025, securing a 10-year offtake MOU with Delta Air Lines for 20 million gallons annually starting 2028, and announced a strategic alliance with Honeywell UOP for co-development of next-gen HEFA catalysts. These moves position Cleantech for scaled production amid rising global SAF demand projected to reach 10 billion gallons by 2030.