Project details

Upper Tamakoshi Hydropower Plant, the largest power station of the country with the installed capacity of 456 MW, suffered a severe loss due to large landslide and rockfall as consequence of incessant rainfall of 27-28 September 2024.The headworks control building was completely damaged, whereas a part of settling basin and box culvert at headworks area of the plant has also been extensively damaged resulting in the complete shutdown of the plant. Two separate contract agreements have been signed between Upper Tamakoshi Hydropower Limited (UTKHPL) and NEA Engineering Company Limited (NEC) for LIDAR survey, damage assessment and rehabilitation works of control building, settling basin, box culvert and other structures of the plant. Following the review of design/as built drawings of the structures and site visits, NEC has submitted the Issued for Construction (IFC) drawings for repair of left settling basin along with the cost estimate and bid documents for repair of right settling basin. The consulting services for construction supervision of repair works have been continued and the design works of control building as well as protection for the gullies above the settling basin are in progress.

The plant has resumed the power generation in the RoR mode after the partial repair of the left settling basin. It is expected that the repair of left settling basin will be completed within a week so that the plant could generate 456 MW during the peak hours.

Status Ongoing

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