Abstract:
Ethiopia is one of the developing countries in the horn of Africa with a total population of over
80 million in 2007. Population where is living in rural areas, mostly access to modern electricity
is difficult. Kedemesa kebele is found around 82 km away from Jimma town at 1675.2m above
sea level having latitude of 7.510N and longitude 36.350
E for the specific study site is found.
And has no electricity access from grid connection. Objective of the thesis would focus on
Design and Optimization of Hybrid Solar PV, Micro Hydro and Bio-Mass Power Generation in
the selected site .The study area has an average 6.6325 sunshine hrs per day. The incoming
average solar energy has been converted in to 5.16 kWh m2 ⁄ /dusing Angestron model. The flow
rate of Naso River was found 1.22m3⁄s from the flow rate of Gigel Gibe I through empirical
area ratio method. Monthly average biogas feedstock (i.e. cow dung), the kebele is
1.35 tonnes⁄day . To produce18 KW from Solar PV system 416 modules, having 83m2
area
and Solar insolation at the site during the worst month at July is 3.86kWh m2 ⁄ /dwas used. For
the Micro-hydro to produce 63KW, 1.22m3⁄s flow rate, 8.1m head, 65% efficiency and 0.36m
weir length, 2.13 m2
canal area and 100 m penstock length was found. To produce 20 KW from
Bio-mass system through the processes of anaerobic digestion mechanism, I have to found that
daily an average of 70.6 m3⁄day biogas production could be found. The homer software has
been design and cost estimation of each components of the hybrid system (i.e. Solar PV-Biomass-Micro-hydro power generation) has been modeled. Hence the designed peak power
demand at installed capacity after 10 year is around 122.24 KW. The output power generation
was seen that from homer software is 209 kW to satisfy power demand from customer side at
specific area of site was got saved. Since EEPCO can sells for urban is 0.025$⁄kWh and for the
rural is double price that is 0.05$⁄kWh because of by considering transmission line cost,
maintenance cost and transportation cost. The hybrid system is cost would found
around 0.031$⁄kWh. So that from Economic Point of View the hybrid system is feasible.
