Energy in the form of electricity is now one of the basic necessities of life. Though deficiency in oil and gas, Pakistan has abundant water and other energy sources like Hydel power, coal and solar power. Hydel power provides about 34 percent of the renewable energy in Pakistan.
Hydroelectric power plants do not use up resources to create electricity nor do they pollute the air Land water as other power plants may.
No Fuel is required to run the plant No air-pollution is created Has a longer life No change in efficiency with the age Hydraulic turbines can be started speedily Cost of power per unit is very less
Sr # Power Station Hydropower Progress/ (MW) Completion1 Golen Gol – Khyber 106 Feb 2015 Pakhtunkhwa2 DUBER KHWAR 130 84.5% Kohistan, KPK Dec 20123 NEELUM JHELUM 969 34% Neelum, AJK Oct 20154 Mangla Dam Raising 644 Substantially Mirpur, AJK completed5 Satpara Dam 17.36 99.8% Skardu Feb 2013
Water, when it is falling by the force of gravity, can be used to turn turbines and generators that produce electricity. When the electricity is generated from the power plant it is transmitted by power lines or cables to the homes.
Reservoir-this is where water is stored for use as needed. Water Turbine-used to convert hydraulic energy of flowing water into rotational mechanical energy. Penstock-is a conduit which carries water into the turbines. Generator-it is used to convert rotational mechanical energy into electrical energy
Some of the major and known Hydel power projects are as follows:
It’s build on Indus at Bara near village Tarbela. It’s the world largest earth filled dam. The dam was completed in 1976 at a cost of Rs.18.5 billion. It’s 143 km high and a reservoir area of 243 square km. With a storage capacity of 119 billion cubic meters of water.
It’s located on the River Jhelum. It’s one of the longest earth filled dam in the world. The main structures of the dam include 4 embankment, 2 spillways, 5 power irrigation tunnels and a 1,000 MW power station. It’s a multipurpose project to control flood water and generate HEP.