http://www.bnsf.com/news-media/railtalk ... otive.html
Sounds like it’s based off the ES44AC, but with 50,000 Li-ion batteries replacing the GEVO-12 prime mover. Kind of a road slug but with regenerative braking and power boost.BNSF LEADS THE CHARGE ON TESTING BATTERY-ELECTRIC LOCOMOTIVE
BNSF and project partners are developing and will soon begin testing a battery-electric high-horsepower road locomotive (the type that moves freight trains from Point A to Point B). BNSF and other railroads have tested low-horsepower battery-electric locomotives in rail yards for years, but mainly for switching freight cars.
In 2018, BNSF and Wabtec (formerly GE Transportation) joined forces to begin developing a 100-percent battery-electric road locomotive prototype that works with conventional diesel locomotives to make a battery-electric hybrid consist. (Consist refers to when two or more locomotives are coupled together.) Performance testing of the hybrid is expected to begin in late 2020.