Woinshet Lera Lachore, Ing Getachew Biru
Ethiopia is one of the second populated countries in Africa. The highest percentage of the population lives in remote rural areas without having access to clean energy. Energy is one of the power full tools to change the populations’ lifestyle. Either extending from the grid or using a standalone system is options to energize the area. The Dubetu and Rarati Kebeles which are found at Minjar-Shenkora woreda in the Amhara Region of Ethiopia at Latitude: 8.598565, Longitude: 38.433785 with an elevation of 2312. The woreda is located at the southern end of the Semien Shewa Zone, bordered on the east, south, and west by Oromia Region, on the northwest by Hagere Miriamna Kesem, and on the northeast by Berehet. The total number of population and householder respectively is 14088 and 2499. The rural villages are far away from grid (mojo substation of Ethiopia) with a distance of more than 64km. Due to its geographical location and distance from the grid, the area has not been electrified yet, and the population is still living in dark. So, a standalone system is a way to electrify this remote village. The energy demand of the two towns Residential and Differential load respectively is 5898.605kWh/day and 3611.25KWh/day. In Minjar-Shenkora woreda attractive renewable energy resource are available with a huge potential like good solar insolation, unwanted waste and water. Considering minimum solar insolation of Gmin 4600 Wh/m2/day, the Average Biomass input of 8.15t/h, and minimum water flow 3.497m3/s of a river, a hybrid model has been designed and evaluated using HOMER and MATLAB Simulink Software. The best feasible generation system is determined for the selected site from optimization process; which can supply the whole load in reliable way despite the variation of radiation and water flow. The selected system contains PV, Biogas, Mini Hydro, Battery and Converter with a COE of $0.1718/kWh and a total net present cost (NPC) of $9.203604 million. This system has excess electricity generation of 63.5%, capacity shortage of 1.92%, and unmet electric load 1.92%. The COE of the feasible setups is in the range of 0.1718 to 0.7620 $ per kilowatt-hour, with a relatively low COE than the national tariff.
Hybrid, PV, Biogas, Mini-Hydro, Primary Load, Deferrable Load, optimization, sensitive, COE, HOMER and MATLAB.
Cite this paper
Woinshet Lera Lachore, Ing Getachew Biru. (2021) Feasibility Study and Design of Standalone Hybrid Power Generation System for Rural Area in Ethiopia: Case Study of Minjar-Shenkora Woreda. International Journal of Renewable Energy Sources, 6, 8-29