Reliability assessment plays a vital role regarding scheming of distribution systems. It ensures to operate in such an economical manner that the interruption at customer loads will minimum. No matter how the service from whether it’s an utility system (electric) or distributed system or any other types source, the main objective is to achieve the satisfactory reliability goal .Distributed generation (DG) importance is seen in this modern era power system network because using of various types of resources not only serves energy to power network but also conserve it too. DG is the backup option and its mere presences in the power system network effectively improve reliability of the system as it provides the support to the electrical power supply system. Dissimilar types of R Indices (Reliability Indices) can track frequency interruptions and period of customer interruption over a particular time range. Ultimate objective is to achieve the customer satisfaction. For that purpose proper planning should be execute. Here, the case analysis focusing on reliability analysis in the radial network system and evaluation of Reliability indices also impact of DG in the network system. The main objective is to improve the reliability of the system by putting DG to different buses. Simplified mathematical formulas are demoed. By analyzing the graphs a comparative conclusion is presente
