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Electric power system is said to have a high degree of reliability if the system is able to provide a supply of electrical energy required by consumers continuously. Power loss that occurs in line resulting voltage drop on the line and cause a loss due to the decreasing reliability of the system to supply power to the load. To reduce the power loss in the line do installation of capacitors. Installation of capacitors conducted by calculating the position of the placement and size, so that placement of capacitors that do can be optimized to reduce losses that occur. Optimal methods are quite effective is algorithm genetics. In this method, capacitor placement is done with the chromosome leads to the selection obtained. The best results will be obtained from a chromosome that contains a condition that there is optimum placement of capacitors that can minimize power loss that occurs in the channel as well as minimize the amount of use of the capacitor. The comparison can be done by using Newton Raphson power flow between before and after forging capacitor.