Reportedly this is the video from one of the grid stations in Mardan. the frequency of the voltage fluctuates erratically and then suddenly drops to 0.... bringing down the entire transmission grid. power and transmission engineers should explain why this happened? #blackout

 https://twitter.com/ZaidZamanHamid/status/1348309751541673984

 

 https://twitter.com/ZaidZamanHamid/status/1348311036886208512