Overview

The Kaligandaki A Hydropower Plant is one of Nepal’s most significant and successful hydropower projects. Located in the Syangja District of western Nepal, it is a run-of-the-river (RoR) plant on the Kali Gandaki River, a major tributary of the Gandaki River system. The project has played a vital role in meeting Nepal’s electricity demand and reducing the need for imports.

• Installed Capacity: 144 MW

• Commissioned: 2002

• Project Type: Run-of-the-river

• River: Kali Gandaki

• Owner/Operator: Nepal Electricity Authority (NEA)

Project Highlights

• Location: Beltari, near Mirmi village, Syangja District

• Catchment Area: ~46,000 km²

• Powerhouse Type: Underground

• Transmission: Connected to Butwal substation via a 132 kV line

• Annual Generation: Approximately 842 GWh

Significance of Kaligandaki A

1. Pioneer in Hydropower Scale

At 144 MW, Kaligandaki A was the largest hydropower plant in Nepal until the commissioning of the Upper Tamakoshi Project. It marked a major leap in domestic energy generation capacity.

2. Foreign-Funded but Locally Operated

The project was funded primarily through international development assistance:

• ADB (Asian Development Bank)

• Norwegian Government

• Japan’s OECF (Overseas Economic Cooperation Fund)
  Despite this, it is operated and maintained by the Nepal Electricity Authority (NEA).

3. Environmentally Conscious Design

The run-of-the-river design avoids large reservoirs, minimizing displacement and environmental degradation.

Technical Details

• Dam Type: Concrete gravity dam

• Dam Height: ~44 meters

• Headrace Tunnel: Approx. 5.9 km long

• Penstock Length: 1.5 km

• Turbines: 3 x 48 MW Francis-type turbines

Challenges Faced

• Sedimentation: The Kali Gandaki River carries high sediment loads, especially during the monsoon, causing abrasion and wear on turbines.

• Maintenance: Due to sediment and operational complexity, regular desilting and turbine maintenance are essential.

• Earthquake Risk: The area is seismically active, requiring robust disaster management planning.

Socio-Economic Impact

• Local Employment: The plant generated significant employment opportunities during and after construction.

• Infrastructure Development: Roads, bridges, and utility services improved in surrounding areas.

• Energy Security: It contributed significantly to ending load-shedding in western and central Nepal.

Interesting Facts

• Kaligandaki A was constructed at a cost of approximately USD 354 million.

• It was the first large-scale underground powerhouse in Nepal.

• The power plant contributes about 10% of Nepal’s total electricity generation.

Future Outlook

While Kaligandaki A remains a backbone of Nepal’s power grid, future upgrades may include:

• Improved sediment control systems

• Automation and digital monitoring

• Potential capacity optimization

Conclusion

The Kaligandaki A Hydropower Plant stands as a testament to Nepal’s capability to develop and manage large-scale infrastructure. Its continued performance has laid the groundwork for even larger projects and inspired confidence in the nation’s hydroelectric potential. As Nepal transitions into a regional energy exporter, plants like Kaligandaki A remain vital assets in the national grid.