Walmart Bets on Truck-Fuel Smorgasbord to Cut Greenhouse Gases

Walmart Inc. will use natural gas, hydrogen and electricity to power its trucks as the world’s largest retailer seeks to honor a pledge to achieve zero greenhouse-gas emissions by 2040.

The strategy is to develop “the right recipe” of alternatives for its big rigs by testing an array of technologies, Fernando Cortes, Walmart’s senior vice president of transportation, said in a statement Wednesday. What they have in common is the goal of cutting diesel consumption.

Walmart will be relying on help from partners including Chevron Corp., Cummins Inc. and Nikola Corp., the electric-truck maker, as well as ...