Not for cross-country journeys yet (at least not alone), but battery powered locomotives are picking up steam... https://www.forbes.com/sites/alanohnsman/2022/

Not for cross-country journeys yet (at least not alone), but battery powered locomotives are picking up steam... https://www.forbes.com/sites/alanohnsman/2022/03/01/the-new-frontier-in-electric-vehicles-trains-with-batteries-big-enough-to-power-small-towns/ https://www.forbes.com/sites/alanohnsman/2022/03/01/the-new-... Apparently they largely have regenerative breaking already but nowhere to store the energy so dump it through resistors to vent it as heat, if they had big battery arrays the savings could be significant.