Key Technical Figures

 Weir
Type RCC spill-over
Height 10.7m
Length 33m
Spillway Capacity
 165.86m3/sec
 Water Channel
Dimension (Lxl)
 2.8 x 1.9m
Length 1212m
Design Flow
 9.1 m3/sec
 Penstock
Diameter 1600mm
Length 178.4m
 Turbines
Type Francis Horizontal
Quantities (set)
 2
Rated Head
 44m
T1 design flow
 4.5m3/sec
T2 design flow 4.5m3/sec
T1 output
 1.5 MWh
T2 output
 1.5 Mwh

 

Project technical overview:

Stages #2 includes a small dam / weir (RCC with spillway), water intake equipped with a settling basin, a 1.2 km long open concrete water channel, a forebay, a penstock and a power house equipped with 2 Francis turbines.Stage #2 is expected to save 9,000 tC0² per year by displacing fossil energy imports, and will consequently receive CERs (Carbon Emission Reductions).  Stage #1 technical data will be available when ready.

 

Electricity generation and distribution
Dam Nhone HHP Stage #2, which is currently under construction, should supply 75% of the province’s electricity needs during rainy season and 30% in dry season, which means its Stage #1 (an estimated 3 MW additional capacity) is critical in order to meet the current demand and for all future growth. Synchronized with the Thai network, Nam Nhone HPP will sell its entire production to EDL, which will realize a substantial saving in energy costs.Any surplus production generated during the rainy season can be sent to Thailand, whereas the lack of energy during the dry season will be offset by Thai electricity imports.An agreement has been concluded between PEA (Thai electricity distribution authority) and EDL regarding this synchronization. Contact us for more technical information on Nam NHone HPP

 

CO Emission Reductions (CERs)
Nam Nhone Hydropower Project Stage #2 has been selected by STEA (Science, Technology and Environment Agency) to be part of the CDM (Clean Development Mechanism) under United Nations supervision (UNFCC). Nam Nhone HPP is expected to replace fossil fuel generated energy and is forecasted to save up to 9,000 tons of CO² per year. It will therefore take an active part in the greenhouse gas emission policy in which all the signatories of the Kyoto Protocol are involved. Laos is one of them, and NNHPP fulfills all the criteria set by the UNFCC. It is expected that NNHHP Stage #1 will comply with CDM requirements and is being advised by experts in its early design stage.