SMRTR Science & EngineeringJun 15, 2026Interesting Engineering

US achieves world’s first end-to-end conversion of cow manure biogas into jet fuel

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California startup Circularity Fuels has completed the world's first end-to-end conversion of raw cow manure biogas into jet fuel, running continuously for thousands of hours at a dairy farm. The process could produce sustainable aviation fuel at one-fifth the cost of current European facilities, potentially making it price-competitive with fossil-based jet fuel.

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