Perencanaan Pembangkit Listrik Tenaga Air (PLTA) Lubuk Gadang Sangir Solok Selatan

Abstract

This paper presents the planning of Hydropower Plant (HP) Lubuk Gadang in Sangir subdistricts South Solok districts. The feseability study is one of the key documents in the establishment of hydropower that contains the feasibility study of technically, economically and financially. Technical study include the potential, civil, mechanical and electrical. It required hydrological data, geological, land contours, river discharge, catchment area etc. Economical and financial study include the costs and financial parameters such as BEP, IRR, NVP, BCR etc. To determine the installed capacity of hydropower use the optimization based on flow duration curve (FDC). The results of the study and the analysis obtained hydropower installed capacity of 11.99 MW. It utilize the water discharge design of 31.603 m3/s, high effective water falling 48.55 meters. Results of annual revenue amounting to Rp 103.026 billion. These results show that Lubuak Gadang Hydropower is said to be technically, economically and financially so that it can be continued to next process.
Keywords-Feseability study, hydropower, Lubuk Gadang