Compare the retailer’s estimated annual cost, usage rates, daily supply charge, discounts, fees and contract terms rather than focusing only on the headline offer. Check whether prices are fixed or can change, how bills are issued, available payment options, and what support is offered if you have payment difficulty. If you have solar, review feed-in tariffs, export limits and any solar-specific charges. Use the Australian Government’s Energy Made Easy website where available, and read the plan’s fact sheet before signing up; the retailer can confirm details for your address and circumstances.