Renewable Energy Startup Cowboy Clean Fuels Raises $7.5M

The Denver-based startup uses agricultural waste as feedstock in its microbial process.

Written by Abel Rodriguez
Published on Mar. 28, 2023
Downtown Denver during the day with Elitch Gardens in the foreground.
Photo: Shutterstock

Denver-based Cowboy Clean Fuels is a renewable energy technology company that produces carbon-negative renewable gas from agricultural byproducts. On Tuesday, the company secured $7.5 million in a Series A round led by Machan Investments. 

Using its patented technology, Cowboy Clean Fuels uses agricultural waste as a feedstock for its microbial process that produces low-carbon renewable natural gas. Because the company is eliminating waste and carbon, its product is classified as carbon-negative.

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With the new funding, the Denver-based climate tech company plans to start a new project in Wyoming that will use its tech to produce renewable natural gas. According to Cowboy Clean Fuels, the Series A funding will help it clear regulatory objectives.  

“We are on pace to advance commercialization of the first RNG technology with the potential to build out a scaleable, renewable energy solution that can make a material difference in our energy economy,” Ryan Waddington, Cowboy Clean Fuels co-founder and CEO, said in a statement. “More importantly, our patented process works in a way that can significantly mitigate the climate problem by removing and permanently sequestering atmospheric carbon dioxide.”

Prior to the Series A round, Cowboy Clean Fuels secured $2.5 million in a debt financing round, according to Crunchbase. 

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