The government would award the contract of ”Tarbela Fourth Extension Hydropower Project”, costing $928.9 million, including $840 million World Bank loan in March next year to initiate Civil and Engineering and Management (E&M) work. According to documents obtained by Business Recorder, mobilisation of contract was expected by the end April 2013. Pre-qualification of applicants for Civil and E&M works is under way.
The project would be completed by June 2018. The government would spend $88.9 million for this project. Tarbela has an installed power generation capacity of 3,478 megawatts on tunnels 1, 2 and 3 while tunnel 4 was originally intended for irrigation water releases only, but subsequent studies proposed its conversion to irrigation-cum-generation tunnel.
The latest proposed installed capacity of Tarbela is 1,410MW. Ultimately, Tarbela”s capacity would be upgraded to 4,888MW after the development of tunnel 4. The projected energy form the project is 3840 GWh/year while annual capacity factor is 31 %.
According to the Project”s cost estimate, powerhouse and tunnel work is to cost $307.45 million, turbines, generators and auxiliaries; $434.24 million and implementation of SAP and EMP dam monitoring $28.63 million. Similarly, project management, technical assistance and training cost is $20.45 million while base cost with physical/price construction is $817.9 million.
The Executive Committee of National Economic Council (ECNEC) has approved the Project on August 16 this year for Rs 83.6 billion, including foreign exchange component of Rs 65.8 billion. A million families would benefit from the additional power. Load shedding would be substantially reduced. Documents also showed that about Rs 39 billion per annum revenue was expected after the completion of the Project. During construction period, between 2,000 and 2,500 jobs would be created.