Free power savings calculator
Free electricity from 11am to 2pm sounds great, but the rates outside the window are higher. This calculator estimates whether a free-hours plan would beat a typical flat-rate plan for your household.
The ACT, Tasmania, WA and NT do not have a free-power scheme yet.
Your bill shows average daily usage. A 2-person home is typically 10 to 15 kWh; a family with ducted aircon or a pool is often 25+.
Free-hours plans charge time-of-use rates outside the window, with the highest rates in the evening peak. Evening-heavy homes pay more of those peak rates.
How this calculator works
We compare two plans for your usage: a typical competitive flat-rate plan in your state, and a modelled free-hours plan where the 3-hour window is free (up to 24 kWh/day) but everything outside the window is charged at a higher rate, consistent with how the Solar Sharer Offer and Victorian Midday Power Saver recover the cost of the free window. Both plans include the daily supply charge.
We assume about 15% of your existing usage already falls inside the window, and that solar households have most of that midday usage covered by their own panels. Batteries are modelled as shifting about 6 kWh/day of evening usage into free midday charging (after losses). Evening-heavy households are charged a higher peak-weighted rate outside the window, consistent with Energy Consumers Australia modelling showing such homes can end up around $320 a year worse off.
Want the full picture first? Read is a free electricity plan right for you? or browse the Free Power Hub.
Compare plans in your area
Enter your details below and we will find the best options for your address. It takes about 2 minutes, and there is no obligation.
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