SHIPPENSBURG, Pa. — On a 40-acre dirt and gravel lot, I climbed into the cabin of a 55,000-pound excavator. Construction crews use these hulking machines to dig trenches for laying pipes and wires or hollowing out building foundations. I took it out for a joyride.
When they run on diesel, the biggest pieces of construction equipment can churn through 10 or more gallons of fuel per hour, emitting as much carbon and air pollution as several cars combined. Off-road equipment, including excavators, bulldozers, cranes and tractors, create about 3 percent of U.S. carbon emissions — roughly the same as the airline industry.
I drove both the electric and diesel versions of the machine, and the differences between them mirrored the differences between EVs and gas-powered cars.