Check your retailer’s peak, shoulder and off-peak times first, as they vary by plan and location. Run high-use appliances such as washing machines, dishwashers and electric hot-water systems during cheaper periods where practical, while avoiding unnecessary peak-time use. If you have solar, use more of your solar generation during the day, and consider whether a battery or controlled-load option suits your circumstances. Compare available plans using your actual usage patterns, and contact your retailer or an independent energy adviser before changing tariffs.