In an unprecedented move within North America’s freight rail industry, Union Pacific Railroad, in collaboration with ZTR, a prominent rail technology firm, is set to commence extensive testing of the first of six hybrid battery-electric locomotives next month.

The prototype, designed and constructed as a joint effort between Union Pacific and ZTR, represents a significant leap in locomotive technology. With the capability to operate on both diesel and battery power, akin to today’s plug-in hybrid cars, this innovation marks a pioneering milestone in sustainable rail transportation.

Beth Whited, president of Union Pacific Railroad, expressed enthusiasm for the project’s potential to enhance fuel efficiency within the locomotive fleet, stating, “This is an incredibly exciting pilot project with great potential to improve the fuel efficiency of our locomotive fleet. It underscores our strong commitment to exploring and developing alternative energy sources while reducing our carbon footprint and advancing our sustainability goals.”

Collaborating closely on the project, ZTR spearheaded the design of the hybrid propulsion technology, while Union Pacific oversaw the prototype’s construction at its facility in North Little Rock, Arkansas. Sam Hassan, CEO and President of ZTR, hailed the partnership with Union Pacific as pivotal in advancing sustainable solutions, emphasising the groundbreaking nature of the hybrid technology.

The hybrid locomotives will operate in a unique “mother-slug” configuration, with one locomotive utilising diesel power and an accompanying “slug” unit providing battery assistance. Offering multiple charging options, including wayside charging and onboard self-charging capabilities, the batteries are poised to revolutionise yard switching operations, enhancing pulling and braking power.

Expected to consume up to 80 percent less fuel compared to traditional diesel units, these hybrid switchers will significantly reduce greenhouse gas and other pollutants emissions while also lowering maintenance expenses and noise levels.

Union Pacific’s commitment to sustainability extends beyond this project, with ongoing efforts to explore biofuels, enhance locomotive fuel efficiency, and collaborate with stakeholders to identify sustainable synergies. Since 2018, Union Pacific has achieved a cumulative reduction of 19 percent in GHG Scope 1 and 2 emissions, with aspirations to further reduce emissions by 50.4 percent.

Jason Fox, senior director of locomotive engineering and quality, hailed the project as a monumental leap in zero-emission technology, underscoring its potential for widespread adoption across Union Pacific’s rail yards.

Rail transportation is already recognised as one of the most fuel-efficient modes of transportation, with Union Pacific leading the charge towards a greener future. On average, Union Pacific moves a tonne of freight (463 miles) on a single gallon of diesel fuel, substantially reducing greenhouse gas emissions compared to alternative modes of transport.

For more information visit www.up.com