How is my electricity bill calculated?
Most Australian electricity bills have two main parts: a daily supply charge (a fixed amount you pay every day just to be connected) and a usage charge (a rate per kilowatt-hour for the electricity you use). If you have a controlled load — such as electric hot water on a separate meter — that usage is billed at its own rate. Compare My Power does exactly this maths for every retailer you enter: supply charge plus usage, shown as a daily, monthly and yearly cost so plans are easy to compare like-for-like.
What is a supply charge?
The supply charge (sometimes called a service or daily charge) is a fixed amount, in cents per day, that you pay regardless of how much electricity you use. It covers the cost of keeping your property connected to the network. Because it's charged every day, a low usage rate with a high supply charge can end up dearer than the reverse — which is why comparing whole-bill costs matters more than comparing single rates.
What is a controlled load?
A controlled load is an appliance metered separately from the rest of your home — typically electric hot water systems, pool pumps or underfloor heating. The network can switch it on during off-peak times, so it's billed at a cheaper rate than your general usage. Naming differs by state; in Queensland it's commonly called Control Load (Tariff 31 or 33). If you don't have one, enter zero and the calculator ignores it.
Where does the imported plan data come from?
For supported states, plan data comes from the Australian Energy Regulator's Product Reference Data — the same government dataset behind the official
Energy Made Easy comparison site. We use each retailer's generally available flat-rate plans with GST-inclusive reference rates, matched to your postcode's network area. Every dataset shows the date it was retrieved, and each imported plan links back to its source.
How often is the plan data updated?
The imported dataset is a snapshot, not a live feed, and the retrieved date is always shown in the app. It's currently refreshed with each site release, and automated weekly refreshes are planned. Retailer prices can change between snapshots, so always confirm the current rate on the retailer's website before switching.
Why isn't plan import available in my state?
Importing real plans relies on the national Energy Made Easy dataset, which covers Queensland, New South Wales, South Australia, Tasmania and the ACT. Queensland is live now and the other four are next. Victoria runs its own system (Victorian Energy Compare), so its import will be built separately. Western Australia and the Northern Territory aren't part of the national retail market, so those pages will support manual entry — which still gives you the full calculator.
Is Compare My Power really free? What's the catch?
Yes — free. No ads, no signup, no selling your details to retailers or brokers, and we earn nothing if you switch. There's no catch: the site is an independent side project, and the only ask is an optional Buy Me a Coffee link in the footer if you find it useful.