Definition: A time-of-use tariff prices electricity differently through the day — cheap overnight windows (often 5-9p/kWh) and pricier peaks — rewarding households that can shift usage.

Who benefits

EV drivers and battery-storage owners benefit most: charging a car or home battery overnight at a quarter of the standard rate transforms running costs.

Requirements

You need a smart meter operating in half-hourly mode. Compare the peak rate carefully — a high peak can wipe out overnight savings if you can’t shift usage.

Estimate your numbers: try the free savings calculator or browse all upgrade guides.