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 consumption. These meters can be analog, with dials that need to be read manually, or digital, which display usage on a screen. Some modern smart meters can transmit data wirelessly, allowing for real-time monitoring and more accurate billing. This technology helps both consumers and utility providers manage energy use more efficiently.