We were commissioned by the South East Councils Climate Change Alliance (a coalition of south eastern Melbourne councils) to prepare an Electric Vehicle Charging Roadmap. This project provided an implementation pathway for councils, to built a network of charging infrastructure.

Our Roadmap included a detailed set of prioritised locations for future charging infrastructure, as shown in the map below. This included a combination of medium to fast chargers, as well as Ultra Fast Chargers at Baxter and Koo Wee Rup, to service high volume roads with vehicles travelling large distances. The locations are colour coded, based on their implementation phase.

The market was segmented into three key types, as outlined in the figure below.

A passing through motorist will generally not want to spend a long time waiting for their battery to charge and their priority is to continue their journey with minimal delay.

Opportunistic charging describes the charging that takes place when someone was going to that particular location anyway, and takes the opportunity to top up, because of the availability of a charger. This can be thought of as analogous to charging a phone not because you are low on charge, but because it is convenient for you to top up the battery.

A local resident without the ability to charge in an off street car park will generally find a slow, 7kW public charger suitable for their needs, as overnight charging is possible.

What did this project cover?

This project helped this group of councils understand electric vehicle charging requirements, network design and least cost methods of building EV charging across multiple local government areas. The project included the following areas:

  1. Electric vehicle charging fundamentals
  2. Understanding electric vehicle ownership within the study area, including forecast ownership between now and 2030
  3. Mapping existing and planning EV charging sites
  4. A detailed EV Charging Roadmap and implementation plan
  5. Forecast usage of the proposed charging network, including average number of charging sessions per day between 2022 and 2030.
  6. Funding options.