This is a situation where the “meter cover” is open and unable to dispense power/supply/current to a customer's premise.

The price per unit of electricity consumed is regulated by the Nigerian Electricity Regulatory Commission (NERC).

This is a unique code after purchasing electricity units that is entered into the meter to activate the purchased units. 

A device that changes the voltage of electricity.

This refers to the process of transporting electricity from generation plants to distribution networks, often over long distances and using high voltage.