The routes have ten charging stations: five 450 kW AC/DC and five 450kW DC/DC. Average electrical energy consumption is about 1.1KWh/km.
The e-buses are in operation from 4:30am to 24:00pm daily (7 days per week), each e-bus covering 75,000km a year.
The order for 30 new Chariot-Higer low-floor fast-charging e-buses and 10 new charging stations is a part of the project Action to Boost Ambient Air Quality in Sofia Municipality by Purchasing and Commissioning Electric Road Transport Vehicles: E-Buses and Trolleybuses under Operational programme Environment 2014-2020 implemented with the assistance of the European Union Cohesion Fund.
The project is entirely financed under procedure No BG16M1OP002-5.004 Measures Addressing Transport as a Source of Air Pollution under the Operational Programme’s Priority Axis 5 Improving Ambient Air Quality.