Compare the off-peak or controlled-load rate, daily supply charge and peak electricity rate, rather than focusing on the discounted overnight price alone. Check when off-peak electricity is available, as hours vary by network and may not suit all appliances, especially hot-water systems. Estimate how much of your usage can shift to those periods, then compare the total annual cost using your bill or the Energy Made Easy website. Ask each retailer about controlled-load requirements, connection fees and any exit conditions before switching.