Public transport with electric bus fleets
A bus operator wants to replace 24 of his buses with electric buses and to build the necessary charging infrastructure. These e-buses charge with up to 150 kW of power. The grid connection needs to be expanded, the size can be reduced with prioritised load balancing, and the design can therefore be made more cost-efficient.
In doing so, the grid expansion can be reduced from 2.3 MW to 500 kW, and the related costs reduced by €320,000. The operator also saves around €140,000 per year with regard to demand charge costs.
Prioritised load balancing charges electric buses depending on their schedules, and ensures that they are fully charged at the next scheduled departure time. The charging processes of the various vehicles are spread over the entire day and not carried out at peak times.
This allows low power to be drawn from the grid throughout the day, rather than creating peak loads. In turn, this creates cost savings in grid expansion and demand charges.