Your electricity bill usually combines your energy usage, measured in kilowatt-hours (kWh), with a daily supply charge for keeping your connection available. The usage price depends on your plan, tariff, time of use and any controlled-load charges, while GST, discounts, concessions or solar feed-in credits may also affect the total. Check whether the meter reading is actual or estimated and review the billing dates to understand the amount charged. Your retailer can explain specific line items, and you can compare plans through the Energy Made Easy website or your state’s approved comparison service.