An electricity meter is a device that measures the amount of electrical energy consumed by a home or business. It records the usage in kilowatt-hours (kWh), which helps utility companies determine how much to charge customers for their electricity. These meters can be analog, with dials that need to be read manually, or digital, which display usage on a screen and can often send data automatically to the utility provider. Electricity meters are typically installed outside buildings and are connected to the electrical supply. They play a crucial role in energy management and billing, ensuring that customers are accurately charged for their electricity consumption. Modern smart meters also provide real-time data, helping users monitor their energy usage more effectively.