ISLAMABAD: The National Power Control Center (NPCC) on Tuesday submitted a report to the Power Division stating the reason behind the nationwide blackout.
According to Geo NewsAt 11:41 pm on January 9, the 500 KV Guddu-Shikarpur transmission line slipped in circuits 1 and 2, the report said. As a result, 500 KV Guddu Muzaffargarh and Guddu. Dera Ghazi Khan transmission lines also tripped, causing the entire power system to shut down.
According to the report, before the blackout, the frequency of the system was 49.85 and it was generating a total of 10,311 MW of electricity, of which 1,257 MW was being generated, 983 MW of government thermal power. It was being generated by power plants, while 8,070 MW was coming from Independent Power Generators (IPPs).
The report further said that the process of restoration of this system started from Tarbela, Mangla and Warsak power houses but due to high frequency fluctuations, tripping in this system is continuing. To stabilize the system, Tarbela and Mangla were interconnected.
The report said that power was restored across the country by 7:40 pm on January 10, and the network of the National Transmission and Dispatch Company (NTDC) was connected to electricity at 6:44 pm on the same day.