Nonintrusive load monitoring

Nonintrusive load monitoring (NILM) is a way to monitor how much electricity is being used in a home or building without having to install any sensors or wires. It works by measuring the changes in the electricity flowing through a building's wiring system. These changes indicate how much electricity is being used by different devices, such as lights, TVs, and air conditioners, and can be used to make more efficient use of energy. For example, NILM can help you turn off devices when they are not being used, which can save you energy and money.