GIS-based modelling of electric-vehicle–grid integration in a 100% renewable electricity grid

•Hourly bidding simulation of 100% renewable grid with EV charging for Australia.•Spatio-temporal optimization to find least-cost configurations using GIS data.•100% renewable grid (RG) without EV is possible with 143 GW capacity and 13.5 ¢/kWh.•100% RG under EV controlled charging achievable with 205 GW capacity and 14.7 ¢/kWh.•100% RG with EV charging increases electricity cost by 1710 AUD/capita annually.