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The Polgolla Barrage (also erroneously known as the Polgolla Dam) is a barrage built across the Mahaweli River at Polgolla, in the Central Province of Sri Lanka.The main purpose of the barrage is to maintain the water level of Mahaweli river at a constant height to provide a uniform potential head at the intake to the underground tunnel which conveys water to Ukuwela powerplant.
Execution of the project one of the first phases, which included Polgolla headwork, commended in 1970. [3] The first phase of the program consisted of diversion headworks at Polgolla and Bowatenna, 40 MW hydropower plant at Ukuwela and an improved water supply to about 52,700 ha of existing irrigated land. Phase one was completed in 1976.
Ukuwela (Sinhala:උකුවෙල, Tamil:உக்குவளை) is a large suburb of Matale, Sri Lanka. lt lies south about 5.5 kilometres (3.4 mi) from the Matale Municipal Council, area, located on the Wattegama-Matale Road.
Mahaweli Authority is a state-owned operator in Sri Lanka for managing the Mahaweli River and its projects. It was established in 1979. [2]The primary objective of the Mahaweli Authority is to implement the Mahaweli River development scheme.
Hydroelectricity accounts for nearly half of the installed power capacity of Sri Lanka. The following page lists most dams in Sri Lanka.Most of these dams are governed by the Mahaweli Authority, while the Ceylon Electricity Board operates dams used for hydroelectric power generation.
The Mahaweli River (Sinhala: මහවැලි ගඟ, literally "Great Sandy River"; Tamil: மகாவலி ஆறு [mahawali gangai]), [2] is a 335 km (208 mi) long river, ranking as the longest river in Sri Lanka.
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The installed electrical capacity and production of Sri Lanka by sources, from 2000 to 2018. Sri Lanka's electricity demand is currently met by nine thermal power stations, fifteen large hydroelectric power stations, and fifteen wind farms, with a smaller share from small hydro facilities and other renewables such as solar.