Belihul Oya
The project area is located about 10.5 km North East of Balangoda Town near Balangoda Haputale main road. The catchment area of the project is about 21.5 km2. The upper boundary of the catchment extends up to Horton Plains. This catchment is mainly fed by the North East monsoon and the average rainfall is about 2,638 mm. This produces an average daily flow of 0.98 m3/s. Gross head of the project is 178 m and design flow is 1.5 m3/s. The installed capacity of the project is 2.2 MW and average energy generation is 9.0 GWh per annum. There are two units of Turgo type of turbines with the capacity of 1.1 MW each and M/s Wasserkraft Volk AG was the equipment supplier for the project.
The project was commissioned in May 2002. At the installed capacity of 2.2 MW and the annual average energy generation of 9.0 GWh, the plant factor works out to 47%.
Assupini Ella
The project is located in the upper reaches of Maha Oya on the border of Gampola and Mawanella electorates. The catchment area at the intake is 27 km2 with an average rainfall of 2,134 mm per year. This produces an average river flow of 1.5 m3/s. Gross head of the project is 210 m and design flow is 2.2 m3/s. The installed capacity of the project is 4.0 MW and average energy generation is 16.3 GWh per annum. There are two units of Pelton type turbines with the capacity of 2 MW each. M/s VA Tech was the equipment supplier for the project.
The project was commissioned in November 2005. At the installed capacity of 4.0 MW and annual average energy generation of 16.3 GWh, the plant factor works out to 47%.
Kadawala
The project area lies between Watawala and Kadawala in the Ginigathhena electorate of Nuwara Eliya district. The project land is owned by Carolina Estate of Watawala Plantations PLC. The catchment area of the project is about 26 km². Since the project site is located in the wet zone area, the catchment receives a high annual rainfall (approximately 4,406 mm/year) mainly from the Southwest monsoon between May and October. The installed capacity of the project is 6 MW and the average energy generation is 13 GWh per annum. Gross head of the project is 132 m and design flow is 5.2 m3/s. There are two units of horizontal shaft Francis type of turbines and M/s Voith Siemens Hydro Kraftwerkstechnik GmbH & Co was the equipment supplier for the project.
The project was commissioned in March 2008. At the installed capacity of 6 MW and the annual average energy generation of 13 GWh, the plant factor works out to 25%.
Neluwa
The project lies across Gin Ganga and is located on the border of Galle and Kalutara districts. The catchment area at the diversion site is about 340 km2. The catchment receives an average annual rainfall of 3,973 mm which produces an average river flow of 22.24 m3/s. Gross head of the project is 6 m and design flow is 40 m3/s. The installed capacity of the project is 2.2 MW and average energy generation is 6.3 GWh per annum. There are two open-fume Kaplan type turbines with a rated output of 1.1 MW per turbine and M/s Gugler Hydro Energy GMbH was the equipment supplier for the project.
The project was commissioned in January 2008. At the installed capacity of 2.2 MW and the annual average energy generation of 6.3 GWh, the plant factor works out to 33%.
Theberton
The project lies across Maskeli Oya at Theberton Estate located in Kiriwaneliya village in Nuwara Eliya district. The catchment area is about 10 km2 with an average annual rainfall of 4,086 mm, and an average daily flow of 1.10 m3/s. The project has a design flow of 1.95 m3/s with a gross head of 90m.
The installed capacity is 1.3 MW and the expected energy generation is 4.6 GWh per annum. There is one 0.8 MW Francis type turbine supplied by Fuchun Industry Development Company and one 0.5 MW Turgo type turbine supplied by Hongya Power Generating Equipment. The plant was commissioned in September 2015. At the installed capacity of 1.3 MW and expected annual energy generation of 4.6 GWh, the plant factor works out to 41%.
Campion
The project lies across Kehelgamuwa Oya in Bogawantalawa in Nuwara Eliya District. The catchment area is about 27 km² with an average annual rainfall of 2,384 mm and an average daily flow of 1.35 m³/s. The project has a design flow of 2.1 m³/s with a gross head of 76 m.
The installed capacity is 1.2 MW and the expected energy generation is 4.76 GWh per annum. There are two Francis type turbines of 0.4 MW and 0.8 MW each supplied by Hongya Power Generating Equipment, China. The project was commissioned in May 2017. At the installed capacity of 1.2 MW and expected annual generation of 4.76 GWh, the plant factor works out to 45%.
Bambarapana
The project lies across Uma Oya in Bambarapana in Badulla District. The catchment area is about 180.5 km2 (after development of the Uma Oya multi-purpose project) with an average annual rainfall of between 1,650-1,880 mm and average daily flow of 4.3 m3/s. The project has a design flow 6.5 m3/s and a gross head of 46 m.
The installed capacity is 2.5 MW and the expected energy generation is 8.69 GWh (after development of the Uma Oya multi-purpose project). There are two Francis type turbines of 1.7 MW and 0.8 MW each supplied by Global Hydro Energy GmbH, Austria. The project was commissioned in February 2018. At the installed capacity of 2.4 MW and expected generation of 8.69 GWh, the plant factor works out to 41%.