Logistics

Walmart's Full Hybrid Truck

Given the size of Walmart’s fleet, we are striving to lead the industry in testing, piloting, and deploying a suite of clean technologies that will help us save money on diesel fuel, reduce air pollutants in the communities we serve, and help our customers live better.

Goals

  • Double our truck fleet efficiency in the U.S. by October 2015 (2005 Baseline).
    • Update: Since 2005, we have achieved a 65 percent increase in fleet efficiency and are continuing to work toward achieving this goal.

Objectives and Actions

Walmart uses our size, in a three-phase new technology deployment process, to test and pilot promising technologies, and then deploy the technologies that make economic and environmental sense.

Experiment:

  • We began testing new technologies that can help reduce our environmental impact, are viable for our business and provide a return on investment.
  • We collaborated with Daimler Trucks North America LLC (DTNA) to build a hybrid-electric Freightliner Cascadia. This truck features a parallel hybrid system based on an electrically-driven second drive axle. It also marks the beginning of a long-term strategic partnership with DTNA to develop innovative, sustainable technologies.
  • In partnership with Arvin Meritor, Walmart is testing a first of its kind, full-propulsion, dual-mode, diesel-electric hybrid in the Detroit area. The truck is powered solely by battery at speeds of less than 48 mph and is currently on the test track.
  • In Phoenix, Arizona, fifteen trucks are being retrofitted to run on reclaimed brown waste cooking grease and will be the first of their kind.
    • The waste cooking grease is being collected from Walmart stores, enabling us to close the loop on a former waste product.

Pilot:

  • Working with Eaton Corp, Walmart has five diesel-assist hybrid trucks in-market now. The trucks are pulling loads in Texas, California, Georgia, and Maryland.
  • In southern California, five Liquid Natural Gas (LNG) trucks are hauling loads today, so we can better understand the real-world benefits and challenges with LNG in class 8 truck fleets.

Deploy:

  • We are continuing to broaden and accelerate investments in trucking fleet efficient technologies across all new trucks to help us save money and our communities live better, including:
    • Engine calibration and installing Auxiliary Power Units (APUs).
    • Addition of five-hundred new aerodynamic trucks to our fleet.
    • Trailer side skirts, Super single tires, Aerodynamic tractor package, and Tag axles.

Progress to-date:

Over the past two years, we replaced nearly two-thirds of our fleet with more efficient tractors. In 2010, we delivered 57 million more cases, while driving 49 million fewer miles. This equates to avoiding almost 40,000 metric tons of CO2 emissions, which is the equivalent of taking 7,600 cars off the road.