Technical Information 

The Project’s location is very favourable for a large hydroelectric power facility.

The natural geography of the Nakai Plateau and the surrounding area is unique in that it allows

a hydroelectric project with a significant head of water without a corresponding requirement for

a high dam.

Specifications:

• a 39-m high, 436-m long, concrete gravity dam with integrated spillway;
• a 450-km² reservoir (at Full Supply Level) with active storage of 3,530 million m³;
• a catchment area of 4,039 km²;
• an average net head of water of 348 m;
• a Power Station comprising 4 x 250 MW Francis turbines (for supply of power to EGAT) and 2 x 37.5 MW Pelton turbines (for supply of power to EDL);
• a double-circuit 115 kV transmission line to Mahaxai in Laos;
• a 138-km long double-circuit 500 kV transmission line to the Thai border; and
• a 160-km long double-circuit 500 kV Transmission Line from the Thai border to Roi Et (built and funded by EGAT).

Dam site and reservoir - new pics here / Waterways  - new pics here / Power house  - new pics here / Transmission lines / Safety
 

Further Information