Hydrogen power seen as 1 way to cleaner energy
CANTON, OHIO — Each morning at a transit facility in Canton, Ohio, more than a dozen buses pull up to a fueling station before fanning out to their routes in this city south of Cleveland.
The buses — made by El Dorado National and owned by the Stark Area Regional Transit Authority — look like any others. Yet collectively, they reflect the cutting edge of a technology that could play a key role in producing cleaner inter-city transportation. In place of pollution-belching diesel fuel, one-fourth of the agency’s buses run on hydrogen. They emit nothing but harmless water vapor.
Hydrogen, the most abundant element in the universe, is increasingly viewed, along with electric vehicles, as one way to slow the environmentally destructive impact of the planet’s 1.2 billion vehicles, most of which burn gasoline and diesel fuel. Manufacturers of large trucks and commercial vehicles are beginning to embrace hydrogen fuel cell technologies as a way forward. So are makers of planes, trains and passenger vehicles.
Transportation is the single biggest U.S. contributor to climate change, which is why hydrogen power, in the long run, is seen as a potentially important way to help reduce carbon emissions.
To be sure, hydrogen remains far from a magic solution. For now, the hydrogen that is produced globally each year, mainly for refineries and fertilizer manufacturing, is made using natural gas or coal. That process pollutes the air, warming the planet rather than saving it. Indeed, a new study by researchers from Cornell and Stanford universities found that most hydrogen production emits carbon dioxide, which means that hydrogen-fueled transportation cannot yet be considered clean energy.
Yet proponents of hydrogen-powered transportation say that in the long run, hydrogen production is destined to become more environmentally safe. They envision a growing use of electricity from wind and solar energy, which can separate hydrogen and oxygen in water. As such renewable forms of energy gain broader use, hydrogen production should become a cleaner and less expensive process.
Within three years, General Motors, Navistar and the trucking firm J.B. Hunt plan to build fueling stations and run hydrogen trucks on several U.S. freeways. Toyota, Kenworth and the Port of Los Angeles have begun testing hydrogen trucks to haul goods from ships to warehouses.
Volvo Trucks, Daimler Trucks AG and other manufacturers have announced partnerships, too. The companies hope to commercialize their research, offering zero-emissions trucks that save money and meet stricter pollution regulations.
In Germany, a hydrogen-powered train began operating in 2018, and more are coming. Frenchbased Airbus, the world’s largest manufacturer of airliners, is considering hydrogen as well.
“This is about the closest I’ve seen us get so far to that real turning point,” said Shawn Litster, a professor of mechanical engineering at Carnegie Mellon University who has studied hydrogen fuel cells for nearly two decades.