The world’s biggest company is utilizing a range of companies from the giants to tiny independents as it battles to reduce its carbon emissions to zero.

Walmart has been fighting its emissions from a variety of angles, including last-mile delivery operations with venture-backed drone company companies like Zipline or DroneUp, autonomous deliveries with Gatik, and electric robots wandering the streets of Bentonville via Serve Robotics.

A Walmart spokeswoman confirmed the retailer was doing “small scale work” with Serve Robotics and said that Walmart is “constantly testing new and up and coming technology to identify solutions that best meet our customers’ needs.”

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The largest issue is Walmart’s massive supply network. Walmart has more than 90,000 vehicles or trailers in its Class 8 fleet and employs 12,000 drivers.

Walmart’s fleet travels around 1.1 billion miles per year, accounting for approximately 24 percent of the company’s scope one emissions, or emissions produced by Walmart’s own assets.

Fernando Cortes, senior-vice president of transportation told Forbes: “The reality today is that there is no scalable solution for us.”

Later this year, Walmart is going to be testing Capacity’s second-generation hydrogen fuel cell-powered yard truck.

Walmart will begin installing Cummins’ new 15-liter natural gas engine in a couple of its trucks early next year. It is collaborating with Chevron to supply its vehicles with CNG that is powered by renewable natural gas.

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Over the last year, Walmart has also been testing zero-emissions electric yard trucks, such as Autocar’s all-electric terminal tractor, in its distribution centers, and it has collaborated with Thermo King to haul produce and other groceries in an electric-powered refrigerated trailer, among other initiatives.

As per Walmart, while it has made at least one investment in one of its last-mile firms, DroneUp, it has not made any investments in any of the companies driving its transportation test programs.

Walmart is introducing 1,100 all-electric vans into its fleet this year, according to Cortes, and has reserved 5,000 General Motors BrightDrop EVs, which will be on the road in 2023.

Source: Fortune

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