IEE: Nabong 500kV Substation and Transmission Facility Project

Published Date: 
06/2011

The Government of Lao People’s Democratic Republic (Lao PDR) requested assistance from the Asian Development Bank (ADB) for the development of the Nabong–Udon Thani Power Transmission Project for possible ADB financing. The project aims to deliver power from hydropower sources in Lao PDR through a transmission line and substation system in Nabong Village towards the Udon Thani border in Thailand.

In 2010, the Nam Ngum 2 Power Company Limited (NN2PC) constructed and developed a 230 kV substation in Nabong Village and a 500 kV transmission line to evacuate power from the Nam Ngum 2 hydropower project to Thailand. The Electricite du Laos (EDL) and the Electricity Generating Authority of Thailand (EGAT) acted as operators of the project.

The Government of Lao PDR, through EDL, plans to upgrade the operating voltage of the 230kV substation to a 500kV substation within the existing 42 ha site in Nabong Village, Pakngum District and to acquire the existing 500 kV transmission line from NN2PC. The upgraded substation and transmission line will be used as a common transmission facility of the Nam Ngum 2, Nam Ngum 3, Nam Theun 1, and Nam Ngiep 1 hydropower projects.

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