Higher amount of current flowing through a transmission line increases transmission loss, especially when current exceeds its limit, as higher current generates more heat resulting increasing line resistance. Bangladesh Power System (BPS) is currently facing problems in few 132 grid points where the thermal limits of transmission are often exceeded. BPS is also foreseeing problem in transmitting additional power from the new generating units in Sylhet to Dhaka zone. This paper investigates the potential solution to these transmission problems with a view to give an idea to the transmission planners.