Bus operators, in conjunction with local authorities and regulators, have been trialling low and zero emission buses over the last few years.
The UK is now in a position where both single and double deck buses are viable for many routes, particularly those in urban and ultra-urban environments.
Developing electrical bus charging infrastructure is complex, with multiple options such as:
- Classic charging - Multi MVA connections are being used but are costly for the operators, time consuming and causes disruption to the communities near bus garages
- Timed connections are being used to reduce costs, with less disruption reduced timescales
- Pantograph - opportunity charging solutions including the buses have only been trialled in Manchester with Volvo and require loss of risk mitigation strategies
- Co-location of batteries being considered with some small projects and could be used for stop gaps once an initial connection has been made
Bus electrification involves several key issues:
- EV buses can cost twice as much as conventional buses
- Electrification requires additional support from local authorities and grants
- Charging infrastructure is regarded as expensive
- Route contracts are typically 5-7years which is not long enough to fund 20 - 40 year asset
- AC or DC charging
- Some bus designs require significantly more power than others
- Format War – Opportunity Charging or Charge at bus garage?
- Bus depot supplied at Low Voltage or High Voltage?
- Night buses have little time to charge and may require additional buses or charging at higher power
- Electric bus requires 22KW, 44KW or 100KW charging and it's difficult to manage multiple options in space-constrained garages
- Bus garage layout is constrained and not designed for charging
- Bus operators and manufacturers have little knowledge of electricity infrastructure and delivering large infrastructure projects
- Bus garages often have a minimal electricity connection, typically a 200 - 300 Amp supply
Bus electrification – our solutions
Consulting & Design
Strategy development, site specific solution development including design, smart charging, renewables and battery storage integration
Programme management of DNO interface, Independent Connection Providers, HV and LV networks, chargers and commissioning
Operations, Inspections and Maintenance
Private HV and LV networks EV chargers
Fully funded solution including, DNO connection, battery storage (if relevant), high voltage, low voltage networks and chargers