Start by checking the bill’s meter reading, billing dates, daily usage and tariff against your previous bills. In Wollongong, higher air-conditioning use, electric hot water, heating and seasonal changes can increase consumption, while an estimated reading or a rate change may also affect the total. Ask your retailer whether a cheaper plan, payment arrangement or available concession could apply, and compare NSW offers through the Australian Government’s Energy Made Easy website. If the bill seems incorrect, contact your retailer first and ask for a review before considering a formal complaint.