Near elimination of air pollution from diesel-electric freight trains by 2025 is now possible by retrofitting them with battery tender cars. (Credit: BeyondImages/iStock)
Trains have been on the sidelines of electrification efforts for a long time in the U.S. because they account for only 2% of transportation sector emissions, but diesel freight trains emit 35 million metric tons of carbon dioxide annually and produce air pollution that leads to $6.5 billion in health costs, resulting in an estimated 1,000 premature deaths each year. What’s more, these deaths and adverse health impacts disproportionately affect disadvantaged and low-income communities, which are more likely to be located near freight rail yards and railways.
The recent dramatic decline in battery prices has created a new possibility for electrification of freight trains. Researchers from the U.S. Department of…