20 Int. J. Convergence Computing, Vol. 3, No. 1, 2018 Copyright © 2018 Inderscience Enterprises Ltd. Designing and modelling of grid connected photovoltaic system (case study: EEU Building at Hawassa City) Yishak Kifle and Baseem Khan* School of Electrical and Computer Engineering, Hawassa University, Hawassa, Ethiopia Email: yisshita@gmail.com Email: baseem.khan04@gmail.com *Corresponding author Jitendra Singh Department of Electrical Engineering Sobhasaria Group of Institutions, NH 52, Village Gokul Pura, Sikar, Rajasthan 332403, India Email: jraysbhadoriya@gmail.com Abstract: Renewable energy sources are integral part of the present energy system because of the various problems, associated with conventional energy sources. Solar and wind are the major renewable energy sources. The renewable energy sources are sufficient enough to meet the world energy requirement. In this paper, a comprehensive analysis on energy output calculation of the photo-voltaic (PV) system is presented. The solar radiation effect is articulated based on monthly average sun shine hours. After local area solar potential is assessed, small plant is developed and designed for EEU building electric power supply, which is connected to the grid. Therefore, there is huge reduction in grid supply demand. The study uses different metrological data and simulates the grid connected PV technologies to end users, for decision making in PV energy investment. Performance ratio and specific energy is calculated as indicator for the plant feasibility in the area. Keywords: solar potential assessment; grid connected PV; performance ratio; specific energy. Reference to this paper should be made as follows: Kifle, Y., Khan, B. and Singh, J. (2018) ‘Designing and modelling of grid connected photovoltaic system (case study: EEU Building at Hawassa City)’, Int. J. Convergence Computing, Vol. 3, No. 1, pp.20–34. Biographical notes: Yishak Kifle completed his Bachelor of Science degree in Electrical Engineering. He completed his Master of Science degree in Power System and Energy Engineering from the School of Electrical and Computer Engineering, Hawassa University Institute of Technology, Hawassa University, Hawassa, Ethiopia. Currently, he is working as an Assistant Manager in the Ethiopian Electric Power Corporation, Ethiopia. His area of interest are power system, renewable energy integration, micro grid, reliability analysis of power system, solar generation, wind generation, battery storage system, adequacy analysis of power system, power quality, optimal operation of renewable energy generation sources, stability analysis and probabilistic load flow analysis of power system.