A smart meter is a digital electricity meter that records your usage at regular intervals and sends readings remotely to your retailer or distributor. It can reduce the need for estimated bills and may support time-of-use tariffs, where electricity prices vary throughout the day. Having one does not automatically lower your bill, because costs depend on your usage, tariff and retailer plan. Check with your retailer or distributor to find out whether a smart meter is available at your property and how your usage data is handled.