ZESCO limited says it regrets the system disturbance that resulted in the loss of power supply to most parts of the country on Monday night.
Senior manager for marketing and public relations Bessy Banda in an official statement said that, “Preliminary investigations indicate that the power outage was caused by a suspected fault at Kitwe substation which later spread to Luano substation. The entire ZESCO Grid was characterized with excessive high voltages due to sudden drop in loads. This triggered the automatic switching off of the generators at Kariba North Bank and Kafue Gorge Power stations to safeguard and protect them from damage.”
Prior to the outage, the internal demand for electricity stood at 1622 Mega Watts. As a result of the system disturbance, over 1500 megawatts was not available on the national grid causing a partial national outage affecting Lusaka, Copperbelt, North-Western, Northern, Eastern, Muchinga, Central and Luapula Provinces.
Banda said only 90 megawatts from Victoria Falls Power Station remained on the grid supplying power to Southern and Western Provinces.ZESCO Limited is in the process of restoring power in all the affected areas.
“So far we have restored power to Muchinga, Eastern, Northern, Lusaka and Central Provinces. We are still working to restore power to the Copperbelt and North- Western Provinces,” Banda said.
Investigations are still underway to establish the actual cause of the fault.