Sejarah Pembangkit Listrik Tenaga Air (PLTA) Siguragura Tahun 1976-1982

Abstract

This study discusses the History of the Siguragura Hydroelectric Power Plant (PLTA) in 1976-1982. This study aims to: (1) analyze the history of the construction of the Siguragura Hydroelectric Power Plant (PLTA); (2) analyze the history of the development of the Siguragura Hydroelectric Power Plant (PLTA) in 1976-1982. This study uses a historical approach with a development concept to answer the research problems. This study uses a historical method, which includes the stages of heuristics, source criticism, interpretation, and historiography. Data sources include: archives, interviews with contemporary figures, books, articles, newspapers, reports, documents, and other relevant literature. These sources are criticized, interpreted, and reconstructed to compile a historical narrative. In the early days of the Siguragura Hydroelectric Power Plant (PLTA) construction, it consisted of planning that included surveys and feasibility studies. The survey covered the scope and extent of the project area, divided into hydrological and meteorological surveys beginning in December 1977; topographic surveys or aerial photography conducted between July and December 1975 and August 1977; geological surveys; and preparatory work and infrastructure including public roads, access roads, settlements, telecommunications, and the provision of crushed stone. Another pressing concern was the initial development capital obtained through a collaboration between the Indonesian Government and 12 consortiums of Japanese businessmen. The subsequent development included the construction of an aluminum factory in Kuala Tanjung, the construction of the Siguragura Hydroelectric Power Plant, and the construction of the Tangga Hydroelectric Power Plant. The Siguragura Hydroelectric Power Plant, with a capacity of 286 MW, began in 1978 and was completed in 1982. Construction was carried out according to schedule, with a workforce of approximately 5,000, consisting of Indonesian and Japanese workers. Construction then involved widening the Asahan River or improving the river channel, dredging for the construction of the Siguragura catchment dam, an upper channel tunnel, and an inner tunnel.