A time-of-use tariff charges different electricity rates at different times, usually with higher peak prices, lower off-peak prices and sometimes shoulder rates in between. Peak periods often occur in the evening, but times vary by retailer, network and state, so check the plan’s fact sheet. You’ll generally need a compatible smart meter, and the tariff may suit you if you can shift usage such as washing or charging an electric vehicle to cheaper periods. Compare the rates and your actual usage with other offers, because a time-of-use plan can cost more for some households.