Tanahu Hydropower Projectतनहुँ जलविद्युत आयोजना
A 140 MW peaking storage project on the Seti River in Tanahun, built by Tanahu Hydropower Ltd (an NEA subsidiary) with ADB, JICA and EIB financing. It features a ~140 m dam and is one of Nepal's few large reservoir projects, designed to supply dry-season peak power. By August 2025 main-dam concreting had begun and Package 2 was about 55% complete.
Installed capacity
140 MW
Reservoir
River / basin
Seti
Gandaki basin
Location
Tanahun
Gandaki
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.
- 2013
Loan agreements signed (ADB / JICA / EIB)
- 2023
Access tunnel completed
- Mar 2025
First concrete poured in main dam
- 2027Planned
Expected commissioning of Package 1
Location
Approximate dam-area location on OpenStreetMap — precise to the district and river reach, not the exact structure.
Sources & data note
Figures for Tanahu Hydropower 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.