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Feasibility study for a standalone solar-wind-based hybrid energy system for application in Ethiopia

Getachew Bekele and Björn Palm

Applied Energy, 2010, vol. 87, issue 2, 487-495

Abstract: The aim of this paper is to investigate the possibility of supplying electricity from a solar-wind hybrid system to a remotely located model community detached from the main electricity grid in Ethiopia. The wind energy potential of four typical locations has been assessed in a previous article. The solar potential has also been investigated and the results are presented in detail in an accompanying article awaiting publication. For one of the sites, Addis Ababa, the results of the investigation are given here in detail. For the other sites, the results are given as sensitivity diagrams only. Based on the findings of the studies into energy potential, a feasibility study has been carried out on how to supply electricity to a model community of 200 families, which comprises 1000 people in total. The community is equipped with a community school and a health post. The electric load consists of both primary and deferrable types and comprises lighting, water pumps, radio receivers, and some clinical equipment. A software tool, Hybrid Optimization Model for Electric Renewables (HOMER) is used for the analysis. The result of the analysis is a list of feasible power supply systems, sorted according to their net present cost. Furthermore, sensitivity diagrams, showing the influence of wind speeds, PV costs, and diesel prices on the optimum solutions are also provided.

Keywords: Hybrid; energy; system; Ethiopia; Wind; energy; Sunshine; duration; Primary; load; Deferrable; load; Initial; capital; Net; present; cost; (NPC) (search for similar items in EconPapers)
Date: 2010
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