The DECC document adds households could even have their power to some appliances turned off remotely to help the national grid if there is too much demand. It says: "In terms of potentially intrusive non-physical behaviour unrelated to data, smart metering potentially offers scope for remote intervention such as dynamic demand management, which is designed to assist management of the network and thus security of supply. This could involve direct supplier or distribution company interface with equipment, such as refrigerators, within a property, overriding the control of the householder."