Are you aware of the transmission loss of energy with distance?
Yes, but it’s not an insurmountable challenge. Remote power generation plants have been connected to the grid with high voltage power lines in such a way to decrease transition loss.
Initial coats can be high, but the long term benefit of a connecting an underutilized producer with a growing consumer market should pay for itself over a number of years. Pakistan already has the Diamer Bhasha Dam being built along the route.
But considering the climate and terrain, it may indeed not be economically feasible. Although, There was that plan for electricity through Central Asia; CASA 1000 Or something, so a connection to the Chinese grid via Central Asia maybe a more sustainable alternative. This is is Phase 2 of CPEC doesn’t materialize. Re-industrialization and local electricity use is the preferred option.