Namgum – Ban Phao HPP is expected to locate on Nam Ngum river,in Ban Phao commune, Pakngum District, Vientiane Capital ,141 Km farfrom the dam site of NamNgum – Nanin HPP on the downstream and about 28 Km from confluence between NamNgum river and Mekong rivertoward the downstream. NamNgum - Ban Phao is about 50 Km from Vientiane Capital toward theNortheast.The catchment area of Nam ngum – Ban Phao at dam site is 16,780 Km2. Normalwater level is 159 m and dead water level is 158.5 m. Area of reservoir surface confirming to NWLis 24.92 km2. It is geographical coordinates are within:18°12'15" Northern Latitude and 103°00'30" longitude.Installed capacity : 84 MWAnnual average energy output : E0 = 350.52 x 106 KWhTurbine type : Bulb turbineNumber of units : Z = 4 unitsFIRR : 12..94%EIRR : 17.87 %Payback period : 12 yearsTotal investment cost estimate : 163.273 Million USD