SIR – You report that electric vehicle charging will put increased strain on the National Grid, and that homes will need to be upgraded to 100-amp main fuses.
But cars are not the only fossil fuel-powered domestic appliance; gas cookers are common, as are gas- or oil-fired boilers. In 2011, Ofgem estimated that typical households used five times as much energy in gas as in electricity – so replacing fossil fuels entirely means that upgrades to our electricity distribution are inevitable.
These upgrades don’t undermine the feasibility of electrification; they are just a necessary cost to bear. New homes should be provided with high-capacity electrical supplies as standard, and business premises given a supply capable of charging their staff’s vehicles throughout the working day.