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Tamakoshi Project Team
Feasibility Study to produce a bankable report for UTK HEP located in the lower region of the Higher Himalayas 100 km northeast of Kathmandu and 60 km west of Mt Everest.

Feasibility Study to produce a bankable report for UTK HEP located in the lower region of the Higher Himalayas 100 km northeast of Kathmandu and 60 km west of Mt Everest.

Run-of-river project with capacity for daily peaking operation to be developed as BOOT with foreign investment for covering domestic demand and possible export of surplus energy to India.

Gross head 820m, maximum output 309 MW and mean annual electricity production 1,727 GWh.

Main features of power plant:

  • Intake dam of concrete of maximum height 23m and four bottom outlets for sediment flushing
  • River intake and two 250m long settling basins
  • Power intake and a 7,200 long headrace tunnel
  • Combined construction access and surge tunnel
  • Pressure shaft, partly concrete lined and partly steel-lined
  • Underground powerhouse with four pelton units
  • Underground transformer cavern and SF6 insulated switchgear
  • Cable, access and ventilation tunnels
  • 2,500m long tailrace tunnel designed for free surface flow.

The study included optimisation of capacity, power system analysis of and the 47 km long 230 kV double circuit transmission line for connection at Khimti HEP.


Services Rendered:

  • Collection of information and review of previous studies
  • Program additional surveys and field investigations
  • Topographic survey
  • Hydrological, meteorological and sediment studies
  • Geological and geotechnical investigations and material testing
  • Hydraulic model tests
  • Glacial lake outburst floods (GLOF) study
  • Project layout and design
  • Construction planning and cost estimates
  • Economic evaluation and financial analyses
  • Environmental and socio-economic impact analyses
  • Training and transfer of technology
  • Study of project implementation.

Client: Nepal Electricity Authority (NEA)

 Read more (.pdf):

Completion of the Detailed Project Reports for Kali Gandaki Koban and Tama Koshi I Hydroelectric Projects in Nepal