What is the main difference between a single rate and a time-of-use tariff?

A single-rate tariff charges the same price for electricity at all times of the day. A time-of-use tariff has different prices for different time periods, with electricity being most expensive during high-demand 'peak' hours.

Are electricity prices going down in Australia in 2026?

Yes, draft determinations from the Australian Energy Regulator (AER) and Victoria's Essential Services Commission (ESC) indicate that default electricity prices are set to decrease from July 2026 for households in NSW, SE QLD, SA, and Victoria.

What time is electricity cheapest in Australia?

On a time-of-use tariff, electricity is cheapest during the 'off-peak' period. This is typically from around 10 pm to 7 am, but you must check the specifics of your plan as times vary by retailer and location.

How do I know if a time-of-use tariff is worth it for me?

Analyse your electricity usage. If you can shift more than 60% of your power consumption to off-peak hours (e.g., by charging an EV or running appliances overnight), it might be worth it. For most people, a single-rate tariff is safer and cheaper.

Time-of-Use Electricity Tariffs Explained: Are They Worth It?

For the vast majority of Australian households in 2026, a standard single-rate electricity tariff is simpler and likely cheaper than a Time-of-Use (ToU) tariff. A ToU tariff is only financially worthwhile if you can commit to shifting a significant portion of your daily electricity usage to designated off-peak periods, which are typically overnight or, in some new plans, during the middle of the day. With the universal Energy Bill Relief Fund having ended on 31 December 2025, and default electricity prices set to fall in mid-2026, understanding your tariff structure has never been more critical to managing your household budget.

This guide breaks down exactly how ToU tariffs work, using real 2026 prices to show you who they’re for—and who should steer clear.

What Exactly is a Time-of-Use Tariff?

Unlike a single-rate tariff where you pay the same price for electricity no matter when you use it, a ToU tariff divides the day into different blocks with different prices per kilowatt-hour (kWh).

These blocks are usually:

Peak: This is when electricity demand on the grid is highest, typically in the afternoon and evening on weekdays when people arrive home from work and school. Electricity used during this period is the most expensive.
Off-Peak: This is when demand is lowest, usually late at night and in the early morning. This is the cheapest time to use electricity.
Shoulder: These are the periods in between peak and off-peak, such as during the day and later in the evening. The rates are priced between the two extremes.

To be on a ToU tariff, your property needs a smart meter, which records your electricity usage in real-time and communicates it back to your retailer.

Single Rate vs. Time-of-Use: A 2026 Price Comparison

The only way to know if a ToU tariff is worth it is to compare the numbers. Let’s create a scenario for a typical family of four in Sydney (Ausgrid network) using an average of 20 kWh of electricity per day.

Scenario 1: Single-Rate Tariff On a standard flat tariff, the price is the same all day. As of early 2026, a competitive single rate in this area is around 36c/kWh.

Daily Cost: 20 kWh x $0.36/kWh = $7.20

Scenario 2: Time-of-Use Tariff (Typical Household Usage) Now let’s put that same family on a ToU tariff. Based on real examples, rates could be approximately: Peak: 70c/kWh, Shoulder: 37c/kWh, Off-peak: 30c/kWh.

A typical family’s usage might be: 40% in peak hours (8 kWh), 50% in shoulder hours (10 kWh), and 10% in off-peak hours (2 kWh).

Peak Cost: 8 kWh x $0.70/kWh = $5.60
Shoulder Cost: 10 kWh x $0.37/kWh = $3.70
Off-Peak Cost: 2 kWh x $0.30/kWh = $0.60
Total Daily Cost: $5.60 + $3.70 + $0.60 = $9.90

In this realistic scenario, the family would pay $2.70 more per day, or nearly $1,000 more per year, on a ToU tariff.

Scenario 3: Time-of-Use Tariff (Highly Optimised Household) What if the family makes a heroic effort to shift their habits? Let’s say they manage to use only 10% in peak (2 kWh), 30% in shoulder (6 kWh), and a huge 60% in off-peak (12 kWh).

Peak Cost: 2 kWh x $0.70/kWh = $1.40
Shoulder Cost: 6 kWh x $0.37/kWh = $2.22
Off-Peak Cost: 12 kWh x $0.30/kWh = $3.60
Total Daily Cost: $1.40 + $2.22 + $3.60 = $7.22

Even with this dramatic and often unrealistic lifestyle change, the saving is negligible. This demonstrates that for most people, the potential savings don’t justify the effort and risk of higher bills.

So, Who Should Consider a Time-of-Use Tariff?

While not for everyone, ToU tariffs can be highly effective for a specific type of consumer:

Electric Vehicle (EV) Owners: Charging an EV overnight is the perfect way to use large amounts of cheap, off-peak electricity.
Households with Solar and a Home Battery: These homes can use their own solar power during the day, their stored battery power during the expensive evening peak, and only draw from the grid for charging during the cheapest off-peak times. The government’s Cheaper Home Batteries Program is designed to encourage this.
Night Owls: If you consistently run your dishwasher, washing machine, and clothes dryer after 10 pm, you might benefit.
Shift Workers: Those who are home and active during the day and sleep during the evening peak might also find savings.

The Australian Energy Regulator’s (AER) draft Default Market Offer for 2026-27 indicates that annual electricity bills for customers on default plans could fall by up to $226 in parts of NSW and $216 in South East Queensland, driven by lower wholesale costs.

A Guide to Peak Times Across Australia

Peak and off-peak times vary between states, distributors, and retailers, so you must check the specific plan’s fact sheet. However, here is a general guide for weekdays in 2026:

New South Wales (Ausgrid network): Peak is often 2 pm to 8 pm.
Victoria (Citipower network): Peak is commonly 3 pm to 9 pm. Victoria is also transitioning to a three-period ToU tariff structure to encourage energy use during sunny midday periods.
South East Queensland (Energex network): Peak is typically 4 pm to 9 pm.
South Australia (SA Power Networks): Often has split peak periods, such as 6 am to 10 am and 3 pm to 1 am.

Weekends and public holidays are usually treated as off-peak or shoulder periods.

How to Check Your Tariff and Find a Better Deal

Check Your Bill: Your most recent electricity bill will name your current tariff (e.g., ‘Single Rate’, ‘Time of Use Residential’).
Use Official Comparison Tools: Do not rely on commercial switching sites. Use the independent government-run websites Energy Made Easy (for NSW, QLD, SA, TAS, ACT) or Victorian Energy Compare (for VIC). These tools use the official Default Market Offer (DMO) or Victorian Default Offer (VDO) as a benchmark to compare all available plans.
Call Your Retailer: Ask your provider for an analysis of your recent usage. They can model your consumption against a ToU tariff to give you a clear estimate of whether you would save money.

Bottom Line

For most Australians in 2026, the potential for bill shock on a Time-of-Use tariff outweighs the potential for savings. The discipline required to consistently avoid expensive peak periods is significant and often impractical for families and those with conventional 9-to-5 routines.

Our recommendation is to stick with a competitive single-rate tariff unless you have an electric vehicle, a home battery system, or a lifestyle that means you use the majority of your power overnight. Before making any switch, use the government’s free comparison tools and analyse your own usage patterns carefully. The cheapest tariff is always the one that best matches how and when you use electricity.