Pakistan extends civil work deadline for 1,410-MW Tarbela 4th Extension

Pakistan’s Water and Power Development Authority (WAPDA) has extended the deadline of applications for pre-qualification for civil works of the 1,410-MW Tarbela 4th Extension hydropower project. Responses now are due August 27.

WAPDA previously invited pre-qualification by July 27 for civil works and by August 22 for electro-mechanical equipment for Tarbela 4th Extension.

The extension project would add another powerhouse to the 3,478-MW Tarbela hydroelectric project on the Indus River. The new powerhouse would contain three 470-MW turbine-generators utilizing discharge from the existing irrigation Tunnel 4 of Tarbela Dam.

The World Bank said in March it approved a US$400 million loan for construction of Tarbela 4th Extension. In 2010, WAPDA named a joint venture of Mott MacDonald and Coyne et Bellier to be design engineer of the project.

WAPDA now invites applications for pre-qualification by August 27 for civil works including modification of intakes of Tunnels 3 and 4; design, supply, installation, and testing of a penstock; and construction of the powerhouse. WAPDA expects to invite bids from pre-qualified firms in October or November.

In a separate solicitation, WAPDA previously invited applications for pre-qualification by August 22 for design, supply, installation, commissioning, and testing of electro-mechanical equipment. Equipment includes three vertical-shaft Francis turbines and 470 MW generators, main inlet and relief valves, generator transformers, 500-kilovolt SF6 circuit breakers, switchgear, control instrumentation, supervisory control and data acquisition (SCADA) systems, and other associated powerhouse equipment. WAPDA expects to invite bids from pre-qualified firms in December.

Complete sets of pre-qualification documents for both solicitations, in English, may be obtained from WAPDA’s Internet site at or from the address below.

For information, contact Water and Power Development Authority (WAPDA), Muhammad Yousaf Khattak, Chief Engineer/Project Director, Tarbela 4th Extension Hydropower Project, WAPDA, Tarbela, Ghazi, Haripur, Khyber Pakhtunkhwa, Pakistan; (92) 99-5660562-64; Fax: (92) 99-5660003; E-mail:; Internet:

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