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Clean Energy Fuels highlighted the impressive performance of the RNG-powered Cummins X15N truck at the 2025 RNG Conference.
UPS's Global Director of Sustainability outlined the vehicle's ability to achieve 7 miles per gallon, a 700-mile range, and maintain speeds of over 65 mph on challenging U.S. terrains.
The Cummins X15N's performance not only underscores the operational capabilities of RNG-powered fleets but also builds upon earlier developments, such as Clean Energy Fuels' initiative to convert cow manure into 2.6 million gallons of fuel annually. Moreover, the findings reinforce the ongoing assessment that RNG adoption remains cost-effective for large logistics operators like UPS when compared with traditional diesel alternatives.