The high demand for electrical energy resources requires humans to make the best use of energy sources contained
in nature. The use of renewable energy as a source of electrical energy is one of the efforts that must be increased, Indonesia has a large enough water potential that can be utilized as a source of electrical energy, the source of electrical energy derived from water energy has several problems, one of which is in maximizing the use of water in dams, good planning will maximize the use of water for generation. The purpose of this research is to create an inflow discharge monitoring system for the daily operation of the Bakaru hydropower plant. The data collection of this research was located in the Bakaru Hydroelectric Power Plant. Data obtained from daily recording data, Monthly reports and Business reports. The data collection of this research was carried out in realtime on the data of the Bakaru Hydroelectric Dam from January 2015 to December 2016, which was taken once every hour at the dam, namely dam elevation data, use of discharges, discharges of water entering the dam (Inflow) and dam gate runoff data. Inflow discharge monitoring system for daily operations helps operators in planning daily operating patterns based on inflow discharge and water usage used for generation. Daily operating pattern is one of the important factors to increase production results. The monitoring system can simulate for calculation of elevation, water holding time and inflow discharge. Based on the results of the study, it was found that the inflow discharge monitoring system for daily operations is very useful to optimize the operation of the Bakaru hydropower system, reducing the start stop range so that the equipment lifetime can be achieved as well as the Capacity factor (CF) can be increased.
Keyword: PLTA, Debit Inflow, Discharge , Capacity factor