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By the middle of next year, Cummins will be offering a full-size truck engine that runs on natural gas, called the X15N.

Cummins has been testing its X15N engine in the U.S. for more than a month, a big step forward for its largest natural gas-powered, heavy-duty trucking powertrain in North America.

The Biden administration has dropped, for now, a plan that would have awarded automakers such as Tesla Inc. credits for using renewable natural gas to power electric vehicles.

U.S. natural gas prices tumbled after a fire broke out at a Texas export terminal, threatening to leave supplies of the fuel stranded in shale basins despite surging overseas demand.

Progressively tougher clean air mandates and the increasing corporate focus on environmental sustainability could signal a larger role for natural gas — especially renewable natural gas — as a trucking fuel, experts said.

Dekalb County started with a simple idea to convert methane into usable natural gas, and it turned the idea into an economic winner that increased the efficiency and productivity of their operations.

Anheuser-Busch is transitioning more than 180 Class 8 trucks, representing 30% of its dedicated fleet, to renewable natural gas.

Hyliion Inc.’s Class 8 long-range electric powertrain underscores the transition period of multiple alternative powertrains is at hand. And the powertrain, whose batteries are charged by an undersized natural gas engine, could prove to be an important step toward carbon-free over-the-road transportation, experts said.

Clean Energy Fuels Corp. announced it launched an online calculator to estimate the cost of transitioning an individual vehicle or an entire fleet to natural gas from diesel fuel.