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 bill customers accurately for their electricity consumption. These meters can be analog, with dials that need to be read manually, or digital, which can provide real-time data and may even allow for remote monitoring. Electricity meters are typically installed on the exterior of buildings and are connected to the electrical supply. They play a crucial role in energy management and conservation, as they help users understand their energy usage patterns and identify opportunities for reducing consumption and costs.