Compare the kilowatt-hours (kWh) used on your bill, rather than the dollar amount, because tariffs and daily supply charges vary between retailers. Check usage across the same billing period and consider household size, home type, climate, solar panels, heating and major appliances. Your retailer may show usage history or an online comparison tool, and your smart meter may provide more detailed data. For broader guidance, check the Australian Government’s energy information at energy.gov.au, while remembering that comparisons are indicative rather than a judgement about what your household should use.