An energy retailer buys electricity or gas and sells it to households and businesses through a plan or contract. It sets your usage and supply charges, sends your bills, processes payments and usually handles customer support, while the local distributor maintains the poles, wires, pipes and meters. You can compare retailers and plans, but prices, discounts, contract terms and availability vary by location and circumstances. Check the retailer’s offer and the Australian Energy Regulator’s Energy Made Easy website before switching.