A smart meter is a type of energy meter that measures and records the electricity, gas or water usage of a household or building. The key feature of a smart meter is its ability to communicate wirelessly with the utility company, providing real-time information about energy usage and enabling remote management of the energy grid.

Smart meters can provide accurate and timely information about energy consumption, making it easier for customers to monitor and manage their energy usage, and potentially reducing energy bills. They can also help utilities to better manage energy distribution and reduce the need for manual meter readings.

In addition to tracking energy usage, some smart meters can also provide real-time feedback to customers on their energy consumption and suggest ways to reduce their usage. They may also be integrated with other smart home devices and systems to enable more efficient energy management.