Start by checking your bills or smart meter data to identify when and where you use the most electricity. Heating and cooling, hot water, clothes dryers and older fridges often use significant energy, so set efficient temperatures, wash in cold water, use the line-dry option and switch appliances off at the wall when practical. LED globes, draught-proofing and cleaning air-conditioner filters can also help reduce usage. Ask your retailer whether a different tariff would suit your pattern, and see energy.gov.au for Australian energy-saving guidance.