VIENTIANE, Laos
11/19/2015
By Gregory B. Poindexter
Associate Editor
Associate Editor
Construction of Xe-Pian Xe-Namnoy
Power Company's (PNPC) US$1.02 billion 410-MW Xe-Pian Xe-Namnoy hydroelectric
power project in Lao People's Democratic Republic (Lao PDR) includes the construction
of three dams: Houay Makchan Dam, Xe Pian Dam, and Xe-Namnoy Dam along the
Mekong River.
Xe-Pian and Xe-Namnoy are rockfill dams will be
constructed on the Bolaven plateau, along with saddle dams and Houay Makchan
Dam, while the powerhouse will be located at the plateau base, giving the
scheme a head of more than 630 m. Water will be discharged to the Xe Kong
River.
About 20% complete, developers think
the project will annually generate about 1,860 GWh once it begins generating
energy. The feasibility study for the project was completed in November 2008,
construction began in February 2013 and commercial operations are expected to
begin in 2019.
Xe-Pian Xe-Namnoy (also spelled Xae
Pien-Xae Nam Noi and other variations) is located in Attapeu and Champasak
provinces near the border with Thailand. It is about 80 km east of Pakse on the
Mekong River and 35 km northwest of Attapeu, approximately 550 km southeast of
Vientiane, the capital city of Laos, in the country’s southern region.
The scheme will also have a storage
reservoir on the Xe Namnoy River, underground tunnels, shaft waterways, and a
powerhouse that features three Francis and one Pelton turbine.
PNPC is a joint-venture formed in
March 2012 by SK Engineering and Construction (SK E&C), Korea Western Power
(KOWEPO), Ratchaburi Electricity Generating Holding (RATCH), and Lao Holding
State Enterprise (LHSE).
SK E&C holds 24% stake in PNPC,
LHSE 26%, and RATCH and KOWEPO each own a 25% share in the project.
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