The National Grid estimates that electrifying all road transport, aside from heavy goods vehicles, would require less than a third more energy than Great Britain’s current demand of around 300 terawatt hours “which the grid could easily cope with”, according to Cooper.
At peak electricity demand periods – such as the early evening – the grid may see demand for electricity climb by 10% if drivers “switched to electric vehicles overnight”, he said. “However, some targeted investment will be needed to ensure there are appropriate places where drivers can access sufficient high power charging away from home.”