Upper Tamor Hydroelectric Projectमाथिल्लो तमोर जलविद्युत आयोजना
A ~285 MW peaking run-of-river project on the Tamor River in Taplejung, developed by Tamor Energy Pvt. Ltd. and approved by the Investment Board Nepal. It is set to become Nepal's first project to use a Tunnel Boring Machine for its ~8.7 km headrace tunnel, under an April 2025 agreement with China Railway, and is in early construction.
Installed capacity
285 MW
Peaking run-of-river
River / basin
Tamor
Koshi basin
Location
Taplejung
Koshi
Expected online
2027
Under construction
Milestones & projected timeline
Key dates so far, with planned milestones marked. Future dates are targets from the developer or government and frequently shift.
- Apr 2025
TBM agreement signed with China Railway
- 2027Planned
Expected commissioning
Location
Approximate dam-area location on OpenStreetMap — precise to the district and river reach, not the exact structure.
Upper Tamor Hydroelectric Project: key facts
Quick answers on capacity, river, developer, status and commissioning, drawn from the sourced data above.
What is the capacity of the Upper Tamor Hydroelectric Project?+
The Upper Tamor Hydroelectric Project has an installed capacity of 285 MW. It is a peaking run-of-river hydropower scheme.
Which river is the Upper Tamor Hydroelectric Project on?+
The project is on the Tamor River, part of Nepal's Koshi basin, in Taplejung district, Koshi Province.
Who is developing the Upper Tamor Hydroelectric Project?+
The Upper Tamor Hydroelectric Project is developed by Tamor Energy Pvt. Ltd. (private (ipp)), with China Railway (TBM tunnelling contract).
What is the status of the Upper Tamor Hydroelectric Project?+
As of mid-2026 the project is under construction.
When is the Upper Tamor Hydroelectric Project expected to be commissioned?+
The Upper Tamor Hydroelectric Project is expected to be commissioned around 2027, though dates for projects under development frequently shift.
Sources & data note
Figures for Upper Tamor Hydroelectric Project are compiled from the sources below and cross-checked where possible. Status and projected dates reflect research as of mid-2026 and may change as the project progresses. The map location is an approximate dam-area estimate. Commentary is Amarnepal's own.