Tariff Fit Checker
Check whether flat rate or time-of-use fits better.
This tool is not trying to predict your exact bill. It is meant to answer the earlier decision question: which tariff structure is more likely to suit the way your home actually imports electricity?
Your result will appear here
Submit the form to get a recommendation profile, supporting reasons, suggested next steps, and relevant devices, integrations, or guides.
How to use this tariff tool correctly
What this tool helps with
Use it to judge whether flat rate or time-of-use looks more natural for your current home behavior before you start comparing retailer offers.
What this tool does not do
It is not a full bill simulator. It is a direction tool for normal flat-vs-TOU decisions, not a replacement for detailed retailer-by-retailer tariff analysis.
How to read the result
The result is strongest when it helps you spot which habit is really driving the tariff fit, such as heavy evening imports or controllable overnight EV charging.
What changes the answer fastest
Heavy evening imports are the strongest flat-rate signal
If most imports still happen after sunset, TOU usually needs real off-peak loads or a battery to win cleanly.
Overnight EV charging is the strongest TOU signal
A repeatable overnight charging block can change the tariff logic quickly because it moves a large controllable load into the cheap window.
A battery changes TOU from theoretical to practical
Without a battery, the home is more exposed to whatever still lands after sunset. With a battery, TOU can become much more workable.