Apparently, electric buses have problems with hills, highways, and can't provide enough heat for passengers.
"Alexandria bus network DASH has been charging ahead on its electric bus program, but DASH leadership said the initiative has also faced a few bumps in the road. At a meeting of the Northern Virginia Transportation Commission last week, DASH General Manager Josh Baker shared some of the city bus service’s experience with implementing electrical buses. Baker also admitted that the electric buses have some challenges, specifically that “they don’t love hills and they don’t love highways, which is something to keep in mind as the program moves forward.” As winter starts to approach, Baker said the other issue is heating on the buses. Baker said that the electric buses don’t have an engine to generate the same levels of heat that diesel buses do."
https://www.alxnow.com/2021/11/08/dash-electric-buses-face-challenges-from-hills-and-cold-weather