For Gas we are already face shortage
Again this has nothing to do with actual shortages just total mismanagement.
In 2009 Pakistan's natural gas reserves stood at 31.3 trillion cubic feet and at current consumption rates (i.e. about 1.5 trillion cubic feet a year). If production from conventional natural gas reserves are increased to meet that demand it lasts for almost 21 years.
Now obviously consumption rates are going to increase and more importantly Pakistan has to meet it's current overall electricity shortfall which stood at around 8500 MW in 2012 but let's assume 10,000 MW to account for 2013. Thus, Pakistan would next need to tap it's recoverable shale gas reserves which currently stand at around 51 trillion cubic feet and a fuel source the US has been successfully exploiting for years now. A Generac SG200 (i.e. 200KW) natural gas generator consumes around 2600 cubic feet of natural gas an hour at full load so a 10,000 MW power plant (containing 50000 of these generators though obviously the country would use larger scale generators) running 24/7/365 (there are peak demand hours and less electricity is required in the evenings but for simplicity sake we'll just go with this) would last about 44 years on the shale gas reserves.
This doesn't include Pakistan's coal bed methane (about 35 trillion cubic feet total but around 21 trillion cubic feet considered recoverable according to Energy Delta Institute) and tight gas reserves (33 trillion cubic feet according to ENI Pakistan though not sure how much of that is considered recoverable but let's assume about 19 trillion or 60% of total reserves like the case with coal bed methane).
Obviously work will also need to be done to Pakistan's transmission/distribution system which is loosing a lot of electricity (about 16% according to the World Bank when countries like the US and UK experience losses around 7% of total output).
Regardless, You can clearly see that Pakistan is not lacking energy sources. However, because of the lack of tax collection that can be used to fund indigenous energy production and corruption on the part of government officials who I suspect are paid bribes to sign contracts that require Pakistan to import gas/oil from abroad the country is facing the crisis it is today.
This is one of the major reasons I support the PTI because they tell people the truth and their energy policy was centered on the principle that Pakistan must exploit it's own reserves.
With the energy produced from the above sources (based on recoverable yields), assuming $3 of GDP/KWh and 1% of the GDP allocated towards energy production the country would have about $255 billion to invest in power plants that use Thar coal/lignite for electricity production (ex. about $2500/KW for UCG) or more environmentally friendly hydro projects like Kalabagh Dam or even, what I believe is the future, enhanced geothermal energy (though the initial costs are high because of it's overall superior capacity factor and the fact it's environmentally friendly/renewable source of electricity it's the better investment).