Rantembe Dam  The Rantembe Dam is a hydroelectric gravity dam at Rantembe, in the Central Province of Sri Lanka. Construction of the dam began in January 1987, and was completed in April 1990 as scheduled. The dam was constructed by the German 'Joint Venture Randenigala'; a different German joint venture has built the Randenigala Dam, further upstream. Construction of the dam cost approximately , of which 34.7% () was funded by the Ceylon Electricity Board, with the majority of the remainder funded by Germany. The Rantembe Dam, located just downstream of the Randenigala Dam, measures in height, in length, and consists of 4 tainter gate spillways with a combined discharge capacity of . The dam creates the relatively small Rantembe Reservoir, which has a catchment area of , and a total capacity of . Water from the reservoir is channelled through the dam through a steel penstock to power the two turbines. The power station's combined output of 52-megawatts generates annually.