Start by checking your bill or smart-meter data to identify when and where you use the most electricity. Heating and cooling, hot water, pool pumps and clothes dryers can be major users, so use efficient settings, timers and cold-water cycles where practical. Switch off appliances at the wall when they are not needed, replace older globes with LEDs and seal draughts around doors and windows. Comparing available plans with your retailer or an authorised comparison service may also help, but savings depend on your home, usage and tariff.