East Yorkshire Buses says it is a short-term measure due to delays in electricity infrastructure.
The co-operative says it wants to establish charging hubs at railway stations for trains and buses.
SquarePeg drivers protest by travelling in convoy to the transport authority's headquarters.
First Bus says the disruption is due to a "technical review of some vehicles".
Charging points are expected to power 30 new electric buses which Stagecoach says it has and wants to get into service.
A new depot in Stockport is part of plans to electrify the entire Bee Network fleet by 2030.
A councillor for Hereford City Council says she hopes they can lease the buses to the new operator.
Councils hope visitors will learn about the benefits of electric vehicles and sustainable transport.
Double-decker buses are set to operate on a different route from what was announced last year.
