[Application of Micro-Hydro Pv/Battery off- Grid Hybrid Energy System for Ethiopian Rural Area]

No Thumbnail Available



Journal Title

Journal ISSN

Volume Title


Addis Ababa University


Ethiopia is a developing country with a total access to electricity not exceeding 41% (in 2012) and the number of household connected to this access is 17%. About 85% of the population lives in places where access to electricity is less than 2%. The village for this study, Mogno Keshenbel Village (8.570N, 37.450E) has a total population of 4526 and 874 households (CSA, 2007, Guder Wereda Health Office). The village is about 68km from Guder substation; whicht makes the extension of the grid not yet practical and off grid electrification is the best option for the village. The community in the Mogno Keshenbel village uses Kerosene for lighting, water for milling and biomass for cooking and dry cells for radios. Nothing has been done so far in developing the renewable energy resources, such as small-scale hydro, solar and wind energy in the village. In this study, feasibility of micro hydro/PV/battery hybrid electric supply system to the village is analyzed using HOMER software (hybrid optimization model for electrical renewable) as optimization and sensitivity analysis tool. The logic behind HOMER selection is that it is proven and worldwide used for micro power design. Hydro potential of the village is analyzed by measuring the gross head of the river with the help of GPS (Geographical Position System) and stream flow data obtained from Ministry of Water, Irrigation and Energy and also Meteorological data of the village is collected from National Meteorological Agency of Ethiopia and NASA. Surface Metrology is used for the estimation of solar energy potentials. Electric load for the basic needs of the community, such as, for lighting, radio, television, ‘injera Mittad”, water pumps, milk processing and flour mills is estimated. One primary school and one health posts are also considered for the community. Additionally three Protestant churches and two Orthodox churches also considered. As a result, many feasible hybrid system combinations are generated, and accordingly, total net present cost (NPC) of the hybrid configuration and cost of energy (COE) for PV/ micro hydro/ battery hybrid system is $394,819 and $0.044/kWh, respectively, which is much lower than previously studied Micro hydro/wind hybrid system and PV/hydro/wind hybrid systems, and this value is less than the current grid price of Ethiopian ($0.06) [EPCO]. Index terms: Hybrid energy systems, Photovoltaic, Micro - hydro, off - grid system, HOMER



Hybrid energy systems;Photovoltaic, Micro - hydro; off - grid system; HOMER