ACS Publications: Abstract “The United States Postal Service plans to purchase 165,000 next-generation delivery vehicles between 2023 and 2032. The USPS submitted an environmental impact statement for two NGDV procurement scenarios: 90% internal combustion engine vehicles and 10% battery electric vehicles and 100% BEVs . To correct several significant deficiencies in the EIS, we conduct a cradle-to-grave life cycle greenhouse gas assessment of these two scenarios.
Though the Postal Service now says at least 40% of the new delivery vehicles will be electric, the flaws in the USPS environmental analysis remain and need to be addressed, said Woody, a research area specialist at the Center for Sustainable Systems, which is part of the U-M School for Environment and Sustainability.
When anticipated improvements to electric vehicles and future electrical-grid decarbonization are factored in, a fully electric USPS delivery fleet would result in up to 63% lower greenhouse gas emissions than the agency estimated, over the lifetime of the fleet. The U-M study includes greenhouse gases generated throughout a delivery vehicle’s lifetime, including the mining and manufacturing of materials, vehicle assembly, vehicle operations and service and end-of-life disposal. The Postal Service analysis looked only at use-phase emissions.
Study senior author Greg Keoleian said the new findings suggest the Postal Service should be deploying electric delivery trucks at a rate much higher than 40%. The failure to do so exposes a lack of sustainability leadership by the agency, he said.
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