An Adelaide electricity bill can rise because of higher usage, air-conditioning, tariff or supply-charge changes, estimated readings, or seasonal demand. Check the bill for kilowatt-hours used, the billing period, whether the reading was estimated, and any discounts or concessions applied. You can compare available plans using the Australian Government’s Energy Made Easy website, entering your postcode and recent usage so the results are more relevant. If you are struggling to pay, contact your retailer promptly to discuss assistance, and check the South Australian Government website for energy concession eligibility.