Electricity of Vietnam (EVN) Group yesterday officially started construction on the second turbine of Song Tranh 2 hydropower plant with designed capacity of 95MW. The Song Tranh 2 hydropower plant project has been conducted by EVN Group as the main investor. It's the second hydropower plant to be built on Vu Gia-Thu Bon river system. It is expected that the hydropower plant will produce annual electricity output of 679.6 million KWh to join the national grid.