A Sydney electricity bill can rise because of higher usage, seasonal heating or cooling, supply charges, tariff changes, or an estimated meter reading. Check the bill against the same period last year and review your usage, daily supply charge and peak, off-peak or time-of-use rates. You can compare available offers in your area through the Australian Government’s Energy Made Easy service, then ask your retailer whether a cheaper plan or payment arrangement is available. If you hold an eligible concession card, check Services Australia or your state government’s guidance, as support depends on your circumstances.