Houay Kapheu Hydropower Project, Saravan, Laos — 5 MW

Houay Kapheu Hydropower Project (Laongam District, Saravane Province, Lao PDR) is a diversion-type hydropower plant. The project was completed and began generating electricity in 2023.

The dam on the Houay Kapheu Stream is a homogeneous earthfill dam with a maximum height of approximately 34.5 m. The reservoir has a storage capacity of approximately 4.0 million m³. The uncontrolled chute spillway has a spillway width of 20 m and a chute width of 15 m.

The water conveyance system on the left bank comprises an intake structure; a headrace tunnel with D = 2.0 m and a length of 298 m; a surge tank with D = 5 m and a height of 20 m; and an exposed steel penstock with D = 0.9 m and a length of 1305 m.

The powerhouse contains 02 horizontal-shaft Pelton turbine units, with a total installed capacity of 5 MW and average annual generation of 22.4 million kWh. Maximum generating head: Hmax = 276 m; maximum design discharge through the generating units: Qmax = 2.5 m³/s.

Contracting entity: Vientiane Automation & Solution Engineering Co.LTD (VASE)

Contract No.: 01/2019/VASE-VCE

Scope of work:

• Revision of technical design and shop drawings as a subcontractor to Viện Thủy điện & Năng lượng tái tạo.
• Consultancy for construction supervision and equipment installation supervision. Geological logging of foundation excavations.