New tool helps municipalities in procurement of electric bus traffic

Tuesday, May 29, 2018

How do we know where electric bus chargers should be built? And how big batteries do the buses really need? A new analysis tool makes it easier to decide where chargers are to be placed and the size of the batteries. Several Swedish cities have already been using the tool in the procurement of electric bus traffic.

The analysis tool has been developed within the project Energy transfer solutions for electrified bus systems (EAEB), financed by the Swedish Energy Agency. The project has looked at technology and costs for electric buses running within large areas and with different types of bus lines.

From Swedish Electromobility Center, Electric vehicle specialist Anders Grauers at Chalmers University of Technology has participated in the project.

Summary of the project

Electric buses are in many cases a cost-effective alternative to gas buses in city traffic. They also represent a realistic alternative to diesel-powered city buses run on HVO, especially if access to HVO in the long run will be scarce. What kind of electric bus system is most cost-effective depends on several factors and requires careful analysis. There is no universal, simple solution.

In the project, a method has been developed to analyze single lines as well as more complex traffic areas with a number of lines, more or less intertwined. A tool has been developed that, among other things, simulates charging and energy consumption, visualizes vehicle schedules and calculates the total cost in a simple way. The tool makes it possible to compare different ways of designing an electric bus system by understanding how the respective systems are affected by, for example, bus frequencies and stop times, vehicle parameters, and the location of charging infrastructure and depot. The tool is particularly suitable for regional public transport authorities in order to create the right conditions for and make the right demands in procurement of electric bus systems.

See project report

See educational movies (in Swedish)

Via Swedish Energy Agency and RISE