Mangla Dam Hydel energy since its commissioning. The annual generation during 2008-2009 was 4797.425 Million KWh while the station shared a peak load of 1150 MW which was 8.18% of the total WAPDA system peak. On 1 September 2013, the water level in Mangla Dam reached to a record height of 1237.15 feet against the maximum conservation level of 1242 feet. "Radio Pakistan" reported that "the water level in Mangla Dam has attained maximum height of 1237.15 feet in the history and it is still increasing." Mangla reservoir had an initial reservoir capacity of 5.88 Million Acre-feet (MAF), which reduced to 4.674
Mangla Dam tailrace discharges into New Bong Canal, which has a length of 25,000 feet with discharge capacity of about 49,000 cusecs, and terminates at an automatic gate control headworks at about 12 km downstream located near old Bong Escape Headworks. There are ten vertical Francis type turbines in the power house. Each of these turbines has an output of 138,00 bhp with a rated head of 295 feet of water. The first four turbines were manufactured by Mitsubishi Electric, Japan and were installed in 1969, turbines 5 and 6 are manufactured by , Czech Republic and were installed in 1974, turbines