Check whether your smart meter records usage in half-hourly intervals and use your retailer’s app or online portal to spot patterns. Ask your retailer which tariff applies, because a smart meter does not automatically mean you are on a cheaper time-of-use plan. Shift flexible activities such as running the dishwasher, washing machine or charging an electric vehicle to lower-priced periods only if the tariff makes this worthwhile. Compare your meter data with your bills, and contact your retailer if readings look unusual or you suspect a fault—never interfere with the meter yourself.