A time-of-use tariff does what it says on the tin: it charges different rates for different times – peak (high-energy use times), off-peak (low-energy use times) and shoulder (between peak and off-peak hours). Peak periods cost more, off-peak costs less.
Peak and off-peak periods vary between different states, distributors and even retailers, but here’s a common breakdown for metro areas:
- New South Wales (Ausgrid): Off-peak: 10pm–7am; Peak: 2pm–8pm*
- Queensland (Energex): Off-peak: 12am–7am & 10pm–12am; Peak: 4pm–8pm*
- South Australia (SA Power Networks): Off-peak: 1am–6am; Peak: 6am–10am & 3pm–1am
- Victoria (Citipower): Off-peak: 12am–3pm & 9pm–12am; Peak: 3pm–9pm
If you’re on a time-of-use tariff, you'll pay less if you shift your highest energy use to off-peak hours. When’s the best time to run the washing machine or dishwasher? Usually, it’s very early in the morning, so get ready to set those timers.