How is storage heater usage controlled and monitored by the electricity supplier?

How is storage heater usage controlled and monitored by the electricity supplier?

• A. A time switch installed and sealed by the supplier
• B. A user-programmed thermostat
• C. A manual switch on the heater
• D. A remote control unit

Answer: (A)

Storage heaters are designed to store heat during off-peak times, so charging must be controlled by the supplier. A time switch is installed in the circuit to switch the heater’s charging input on only during the off-peak window, and it is sealed by the supplier to prevent tampering. This ensures charging occurs at the designated times and that the supplier can monitor and bill appropriately. A user-programmed thermostat or a manual switch would let the occupant influence charging, undermining the tariff and control scheme, while a remote control unit would similarly place control in the customer’s hands.

Storage heaters are designed to store heat during off-peak times, so charging must be controlled by the supplier. A time switch is installed in the circuit to switch the heater’s charging input on only during the off-peak window, and it is sealed by the supplier to prevent tampering. This ensures charging occurs at the designated times and that the supplier can monitor and bill appropriately. A user-programmed thermostat or a manual switch would let the occupant influence charging, undermining the tariff and control scheme, while a remote control unit would similarly place control in the customer’s hands.