The energy transition is pushing natural gas vehicles (NGV) aside for battery electric vehicles (EV), according to new research.

“The State of Sustainable Fleets 2021,” issued in late May by consultancy Gladstein, Neandross and Associates, said imminent climate change priorities make EVs the ultimate solution. The report was sponsored by transportation fueling, manufacturing and leasing firms, with perspective from the University of California (UC), Davis and the Institute of Transportation Studies.

According to UC Davis, many fleet operators have adopted “low-pollution technologies such as natural gas and propane, which are significantly more affordable” than zero-emission vehicles. “However, the urgency to meet climate change goals and the fact that these clean...