Winter Electricity Bills: What Sydney Households Can Move to Off-Peak Power

Your winter electricity bill just landed — and it is probably worse than you expected. Sydney households are paying an average of around $235 a month during winter, with quarterly bills regularly topping $700. And that is before you factor in the expiry of federal energy rebates, which pushed Australian electricity costs up 37 per cent in the year to February 2026.

Here is the thing most households do not realise: a large portion of that bill is driven by appliances that do not need to run during peak hours at all. Hot water systems. Pool pumps. EV chargers. These are heavy energy users that can be quietly shifted to off-peak windows — when electricity can cost less than half the peak rate — with the right setup.

‍

‍

This guide explains which appliances are worth moving, what changes you actually need to make it happen, and how much you can realistically save this winter.

‍

‍

What is off-peak power — and how does it work in NSW?

If you are on a time-of-use (TOU) tariff in NSW, your electricity price changes depending on the time of day. There are three pricing windows:

‍

Peak: weekday afternoons and evenings (typically 2pm–8pm in summer, 5pm–9pm in winter) — the most expensive period.Shoulder: morning and early afternoon on weekdays — moderately priced.Off-peak: 10pm to 7am every day, including weekends — the cheapest window.

Off-peak rates in NSW typically sit around $0.27–$0.30 per kWh on standard TOU plans, compared to peak rates that can reach $0.65–$0.70 per kWh. That gap is significant.

Separately, there is also a controlled load (CL) tariff — a dedicated off-peak circuit for specific high-draw appliances like electric hot water systems. Controlled load rates are even lower, typically $0.19–$0.23 per kWh, because the network operator can manage when those loads run. Your distributor (Ausgrid, Endeavour Energy, or Essential Energy depending on where in Sydney you are) controls the switch.

Important: off-peak and controlled load tariffs only apply if you have the right meter and tariff setup. Not every Sydney household is on a time-of-use plan — check your bill or contact your retailer to confirm.

‍

‍

Why winter is the worst time to be on peak rates

In winter, Sydneysiders come home, turn on the heater, run the dishwasher, cook dinner, and hop in a hot shower — all between 5pm and 9pm. That is peak demand for the grid, and it is exactly when your tariff is highest.

Heating and hot water together typically account for 30–50% of a household's total energy use. If both of those are running during peak hours, you are paying the most expensive rate for your two biggest loads. Shifting even one of them out of that window makes a measurable difference.

‍

‍

5 appliances Sydney households can move to off-peak

‍

1. Electric hot water systems — the biggest win
   An electric storage hot water system is typically the single largest off-peak opportunity in a Sydney home. These systems heat a tank of water and keep it ready — they do not need to run continuously, and they certainly do not need to run at 6pm.
   
   If your hot water system is wired to a controlled load circuit, your distributor schedules it to run during off-peak windows automatically. Controlled load rates ($0.19–$0.23/kWh) are significantly cheaper than standard off-peak rates, let alone peak rates.
   
   The catch: many Sydney households have electric hot water systems that are not on a controlled load circuit. They are running on general supply, which means they may be heating water at whatever time of day the thermostat fires — including peak hours. A licensed electrician can check your setup and wire the system to a dedicated controlled load circuit if it is not already on one.‍
2. Pool and spa pumps
   Pool pumps need to run daily to keep water circulating and clean, but they do not need to run at any particular time of day. Shifting your pump to run overnight or in the early morning is straightforward — either via a timer on the pump's circuit or through a controlled load connection — and can cut the operating cost of the pump significantly given it may run for 6–10 hours a day.‍
3. Dishwashers and washing machines
   These appliances draw a moderate amount of power and are easy to shift with nothing more than a smart plug or a delayed start setting on the appliance itself (most modern dishwashers and washing machines have one built in). Running them after 10pm or before 7am puts them squarely in the off-peak window on a TOU tariff.
   
   No rewiring required — just a change in habit or a $30–$60 smart plug if your appliance lacks a timer.‍
4. EV chargers
   Electric vehicles are increasingly common in Sydney, and home EV chargers are a significant load — typically 7kW or more for a Level 2 charger. Charging overnight is both the cheapest and most convenient approach, putting the bulk of the charging load in the off-peak window.
   ‍
   Most EV chargers and vehicle apps allow scheduled charging. A licensed electrician can also install your charger with a dedicated circuit and timer to ensure it only draws power during off-peak hours automatically.‍
5. Battery storage charging
   If your home has a solar battery, off-peak rates create an opportunity to top up the battery from the grid overnight at low cost, ready to use during peak hours the following evening. This strategy — sometimes called arbitrage — can make a meaningful difference to households that exhaust their solar storage before the evening peak.
   
   This requires a battery system configured to allow grid charging and a TOU-aware inverter. Not all systems support it out of the box — your installer or electrician can advise.

‍

‍

What wiring or hardware changes do you actually need?

The level of work required depends on the appliance:

Hot water system on controlled load: requires a licensed electrician to wire a dedicated circuit and arrange the controlled load connection with your distributor. This is not a DIY job — it involves your switchboard and metering.

Pool pump on a timer or controlled load: a licensed electrician installs a timer switch or dedicated circuit. Straightforward job, typically completed in a few hours.

EV charger with scheduled charging: if your charger does not have built-in scheduling, an electrician can add a timer to the circuit. If you are installing a new charger, scheduling can be built in from the start.

Dishwasher and washing machine: no electrical work needed if the appliance has a delay start. A smart plug handles the rest for appliances that do not.

All work involving your switchboard, metering, or new dedicated circuits must be carried out by a licensed electrician. In NSW, unlicensed electrical work is illegal and can void your home insurance.

‍

‍

How much can you realistically save?

The savings depend on your current tariff, your appliances, and how much you shift. As a rough guide:

A household moving its hot water system to a controlled load circuit could save $200–$400 per year, depending on system size and current tariff.

Shifting a pool pump to off-peak timing can save $100–$250 per year for a pump running 8 hours a day.

Running a dishwasher and washing machine off-peak instead of during peak adds up to $50–$150 per year, depending on usage frequency.

The most reliable way to get an accurate estimate for your home is to have a licensed electrician assess your current setup, check your tariff, and recommend the changes that will have the most impact.

You can also compare energy plans at energymadeeasy.gov.au — the government's free comparison tool — to make sure you are on a time-of-use tariff that actually rewards off-peak usage.

‍

‍

Frequently asked questions

‍

‍