The Ghana Grid Company Limited (GRIDCo) on Tuesday explained that the loss of electricity supply experienced countrywide on Monday night was a result of the failure of critical sub-station equipment at the Volta sub-station in Tema.
The incident, which happened at about 19.49 hours, followed an explosion in equipment used for measuring power flows and a resultant fire outbreak, which affected other nearby equipment.
This led to the loss of all generating units and some transmission lines within the National Power System, a statement from GRIDCo issued in Accra said.
It said the explosion affected one of three lines supplying power to the Achimota sub-station, the bulk supply point in Accra.
"GRIDCo is working around the clock to restore the line to service within the shortest possible time," it said.
Meanwhile, GRIDCo has requested the Electricity Company of Ghana (ECG) to reduce supply to consumers in Accra by 50 MW in order to prevent overloading on he two operating lines to the Achimota substation.