I still not quite sure what you mean, but I can say that Pakistan doesn't really tax the energy sector at all. In fact, the energy sector is quite subsidized, and unjustifiable so, as the reason why those subsidizes existed was to encourage economic growth, through increased industrial output, but that has not materialized at all.
To be frank, the rupee has little to do with the energy sector, and only the end use is where the rupee actually factors in. The US dollar is what Pakistan uses to import oil and gas.
I should also mention, Pakistan also faces a huge problem of oil and gas theft, as well as illegal refineries, which have cost the economy and the energy sector quite literally billions of dollars, including unpaid taxes.