Hydropower Sion project is located at Parlilitan, HumbangHasundutan district, North Sumatera Province, Indonesia. It is 43 km away from Doloksanggul, the capital of HumbangHasundutan district.
To reach the location, it takes a 12 hours from Jakarta (2 hours flight from Jakarta to Silangit,
With additional 2 hours drive).
Hydropower Sion project is a run-of-river of hydropower. It takes advantages of enormous waterflow of AekSimonggo river. The catchment area is 279.2 km2. The region has high rain fall between 3.000 – 3.500 mm per annum.