Colenco Power Engineering AG of Switzerland has begun a feasibility study of developing the 400-MW Xe Pian-Xe Namnoy hydroelectric project in the Xe Kong River Valley of Laos.
Colenco said it initiated project activities with a site visit in December. The study, for South Korea’s Dong Ah Construction, is to investigate feasibility and to elaborate, design, and optimize alternatives. The work is to be complete by the end of 2007.
The project is located on the Bolaven Plateau of southern Laos. It is to store water from three catchments in a large regulation basin. From there the water is to be conveyed by a 13.5-kilometer headrace tunnel to a pressure conduit, dropping about 700 meters to the powerhouse at the bottom of the Xe Kong Valley.
Project power is expected to be exported to Thailand.
Xe Pian-Xe Namnoy was to be developed in the second half of the 1990s, but was halted by the Asian financial crisis at that time. In 2005, Dong Ah decided to resume the project.
Colenco, associates study Pakistan’s 3,712-MW Dasu
A consortium including Colenco, NESPAK of Pakistan, and other firms is conducting a 30-month feasibility study of the 3,712-MW Dasu hydroelectric project on the Indus River in northern Pakistan.
Colenco said the work, for Pakistan’s Water and Power Development Authority, requires detailed investigations and engineering studies of the site.
The dam and run-of-river hydro plant is to be located 63 kilometers downstream from Basha Dam and 547 kilometers northeast of Islamabad. It would have a gross head of 215 meters and would generate 16,781 gigawatt-hours annually.