The Slow Socket Settlement: Granny Charging Costs for UK Drivers in 2026
Charging an EV from a standard UK three-pin socket remains the cheapest way to start, but the arithmetic changes once continuous-load limits, conversion losses and tariff windows are included. This guide sets out the real pence per mile for granny charging in 2026 and identifies the mileage patterns where a 7kW wallbox earns its keep.