JPS_V3_N2_RP4 D. Chinna Kullay Reddy P. Murthy S. Mallikarjunaiah V. Ganesh Journal on Power Systems Engineering 2322–0376 3 2 22 27 Distributed Generation, Artificial Bee Colony, Genetic Algorithm, Loss Reduction, Radial Distribution Network A method proposed here for the placement of Distributed Generation (DG) in electrical distribution system in order to reduce the system power loss and voltage profile improvement. The DG real and reactive power injections typically installed near to the load centers and distribution system voltage support energy savings, and reliability improvement by reducing the losses in the system. This work focuses on the ancillary service of real power and also both real and reactive power support provided by DG. Artificial bee colony algorithm (ABC) is proposed to find the DG optimal size and location by using Loss Sensitivity Index (LSI) in order to minimize the total system real power loss. Simulation studies are examined on 33 and 69-bus radial test system to validate the proposed method with existing method. May - July 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3482