To save money on a time of use tariff, try to shift your energy usage to off-peak times when rates are lower. This can include running appliances like washing machines and dishwashers at night or on weekends. Additionally, consider using a smart meter or energy monitoring app to track your usage patterns and identify peak times. Lastly, always check with your energy retailer for any specific discounts or offers that may apply to your tariff, and visit energy.gov.au for more insights on managing your energy costs effectively.