This time of use tariff FAQ explains how electricity prices can vary across peak, shoulder and off peak periods. It covers how these tariffs work, who may benefit, how to check your meter and bill, and what to consider when comparing plans. You will also find practical ways to shift electricity use and questions to ask before changing retailers. Tariffs, availability and rates vary, so confirm current details with your retailer and the relevant energy regulator.
What Is a Time of Use Tariff
A time of use tariff charges different rates for electricity used at different times of day, rather than applying one general usage rate. The periods are commonly described as peak, shoulder and off peak, although the names and hours depend on the retailer, network and tariff rules. Peak periods are usually linked with higher demand, while off peak periods are often scheduled when demand is lower. Your bill records how much electricity you used in each period and applies the relevant rate.
A time of use tariff is different from a flat tariff, where the same usage rate generally applies regardless of when electricity is consumed. It is also different from a demand tariff, which may include a charge based on the highest level of electricity use during a particular interval. Some plans combine time based rates with controlled load charges for equipment such as electric hot water systems. Read the full tariff description because the same labels can mean different things between retailers.
The main issue is not simply whether an off peak rate is lower. A household can pay more overall if it uses substantial electricity during expensive peak periods, even when it moves some activity into cheaper periods. Peak timing, off peak availability and daily supply charges all affect the result. Compare the pattern of your actual consumption with the plan's published rates instead of judging an offer by one advertised price.
Who Can Use a Time of Use Tariff
Eligibility usually depends on the electricity meter, the local network and the retailer's available plans. A smart meter can record usage in regular intervals and send or store the information needed for time based billing. Some older meters may need to be replaced before a time of use plan is available. Ask the retailer whether changing plans would require a meter upgrade, whether there is a fee, and whether the work could affect your supply arrangements.
Time of use pricing may suit homes that can shift flexible usage away from peak periods. Common examples include households that run dishwashers, washing machines, pool pumps, electric vehicle chargers or heat pump hot water systems later at night or during other lower priced periods. Solar households may also benefit in some circumstances if they use more of their generated electricity during the day, but export credits and evening consumption must be assessed together. A plan that suits one solar home may not suit another.
It may be less suitable when residents are home during peak periods and rely heavily on electric heating, cooling, cooking or hot water at those times. Medical equipment, caring responsibilities and work schedules can make load shifting impractical. Meter compatibility and household flexibility are therefore more important than assumptions about a plan being cheaper. Ask for a clear explanation of how the change affects your existing meter, controlled loads, solar system and any concessions.
How to Read the Rates and Your Bill
Start with the retailer's energy price fact sheet, contract terms and current bill. Identify the usage rates for each time period, the daily supply charge, any controlled load rate, solar feed in tariff and discounts. Check whether rates include GST and whether discounts apply to usage, supply charges or both. A lower off peak rate may be outweighed by a higher supply charge or a higher peak rate.
Your bill should show the billing period, total consumption and, where interval data is available, how usage was allocated across the tariff periods. Compare the dates and meter readings with your previous bill, particularly after a meter change or tariff transfer. If the bill shows estimated rather than actual readings, ask the retailer how the estimate was calculated. Keep copies of bills so you can compare the same length of billing period and account for seasonal changes.
When checking an unexpected increase, separate price changes from usage changes. Heating and cooling, visitors, a new appliance or a faulty hot water system can raise consumption even when the tariff has not changed. Check the fact sheet, supply charge and actual interval usage before deciding that the tariff itself caused the increase. Contact the retailer if the bill does not explain the time bands or if the meter data appears inconsistent.
How to Compare Time Based Electricity Plans
A useful comparison starts with your own consumption history, ideally covering a full year so that seasonal heating and cooling are included. List the average usage in each time band if your retailer can provide it, then compare that pattern with each plan's rates and charges. If interval data is unavailable, use your daily usage and ask the retailer or a comparison service what information can be used. An energy comparison is most useful when it compares estimated annual costs on the same usage assumptions.
People searching for an electricity price Hobart or another local price should confirm the distribution area and postcode first. Electricity prices can differ between states, networks and customer types, and a plan available in one suburb may not be offered in another. Compare the contract length, fixed or variable pricing, exit conditions, payment requirements, concessions and hardship arrangements as well as the usage rate. Check the offer directly with the retailer because published comparison information can become outdated.
An electricity usage comparison should consider behaviour, not just the number of appliances in the home. For example, two similar homes may have very different outcomes if one runs a pool pump and electric vehicle overnight while the other uses electric heating through the evening peak. Estimated annual cost across your actual time bands is a stronger decision measure than the cheapest individual rate. Recheck the calculation after a major change such as solar installation, electrification or a change in occupancy.
Ways to Manage a Time of Use Tariff
Begin by identifying appliances that can operate automatically or be delayed without affecting comfort or safety. Washing machines, dishwashers, pool pumps and some hot water systems may be suitable, provided they are used according to the manufacturer's instructions. Timers and smart controls can help, but check that appliances are connected safely and that automatic operation does not create a new peak in another period. Do not switch off essential medical equipment or safety systems to chase a lower rate.
Solar generation changes the best time to use electricity because the lowest cost energy may be the electricity your system produces and your home uses directly. Try to match flexible loads with the hours when your solar system normally generates, while remembering that output changes with weather, season and shading. Batteries can alter when grid electricity is purchased, but their cost, performance, warranty and export settings need separate assessment. A solar installer or qualified electrician can explain system-specific issues, while the retailer confirms tariff and export arrangements.
Review your plan after the first few bills rather than assuming the initial estimate was accurate. Record when major appliances run, compare that record with interval data, and check whether the tariff periods changed. Shift flexible demand without compromising safety or essential needs, and avoid relying on a timer for equipment that requires supervision. If you are having difficulty paying, contact the retailer early about its hardship program or payment support instead of delaying action.
Key Takeaways
A time of use tariff can reward households that use a meaningful share of electricity outside higher priced periods, but it is not automatically cheaper. The outcome depends on the tariff's time bands, your meter, daily supply charge, seasonal usage, solar exports and ability to shift demand. Treat promotional estimates as examples rather than promises, because your actual bill may differ.
Before switching, obtain the plan's current fact sheet and ask the retailer to confirm the tariff structure, meter requirements, contract terms and any costs. Use bills or interval data to estimate your present pattern, then compare the likely annual cost with other plans. If you are in Hobart, check the applicable local network and current offers rather than relying on a general electricity price estimate.
In short, compare total annual cost and practical fit, not just the lowest off peak rate. Confirm current rules and available plans with the retailer and use an authorised comparison service or government energy information where appropriate. If a billing, metering or payment problem is difficult to resolve, seek help from the retailer, your state energy ombudsman or an appropriate financial counselling service.