AIMS Energy, 2017, 5(4): 667-690. doi: 10.3934/energy.2017.4.667

Research article

Export file:

Format

• RIS(for EndNote,Reference Manager,ProCite)
• BibTex
• Text

Content

• Citation Only
• Citation and Abstract

Feasibility study for power generation using off- grid energy system from micro hydro-PV-diesel generator-battery for rural area of Ethiopia: The case of Melkey Hera village, Western Ethiopia

1 School of mechanical and industrial engineering, Addis Ababa university, Addis Ababa, Ethiopia
2 School of mechanical and industrial engineering, Addis Ababa university Addis Ababa, Ethiopia
4 School of mechanical and industrial engineering, Addis Ababa university Addis Ababa, Ethiopia

## Abstract    Full Text(HTML)    Figure/Table    Related pages

Electricity supply in Ethiopia is extremely antiquated. Most of the remote rural areas of Ethiopia are not yet electrified. Electrifying these remote areas by extending grid system is difficult and costly. Melkey Hera village is one of a rural community situated in western Ethiopia. In this village, extension of the grid is not yet practical. As the current international trend in rural electrification is to utilize renewable energy resources; solar, wind, biomass, and micro hydro power systems can be seen as alternatives. Therefore, the target of this paper is to investigate the viability of a micro hydro, Photo Voltaic (PV) and Diesel Generator-battery hybrid power system options to come up with the best techno-economic and optimum configuration for supplying electricity to this village. The study was performed by an assessment of the predicted village energy demand, the available renewable energy resources, and then using the software called HOMER. The best hybrid system type was described and the optimization of the system configuration was also done. Furthermore, through the simulation of different configuration of the supply system, the optimal mini-grid hybrid system design was established to combine hydro, solar PV, battery energy storage and diesel generator. This system demonstrated to be more reliable in operation, and the most cost-effective for the required level of service. The role of energy storage in system operation also demonstrated to offer additional operational advantages in-terms of reliability and cost savings. Overall, the design results show that the majority of energy obtained from hydropower, which accounts 79%, the PV module covers 20%, and diesel generator is only 1% of the total load consumption. The obtained hybrid system is cost competitive with \$\$$0.133/kWh, which is somewhat good to satisfy the community needs. However, this is more than current energy price in Ethiopia which \$$0.06/kWh. If due-merit given to the electricity deficiency of the country, it would play major role in improvement of life quality of community living in rural areas. From environmental standpoint, the renewable fraction of the project is 99%, which shows the system is environmentally friendly. Finally, this study identified that off grid hybrid micro hydro-PV-DG-battery bank energy system is cost effective and environmentally friendly in delivering power for rural areas far from the grid. Moreover, the study provides valuable information to the government and Non-government organization (NGO) about the renewable energy potential of the country for a rural electrification project in Ethiopia.
Figure/Table
Supplementary
Article Metrics

# References

1. https://energypedia.info/wiki/Ethiopia_Energy_Situation#Hydropower.

2. Nfah EM, Ngundam JM, Vandenbergh M, et al. (2008) Simulation of Off-Grid Generation Options for Remote Villages in Cameroon. Renew Energ 33:1064-1072.

3. Zelalem G (2014) technical and economic assessment of solar PV/diesel hybrid power system for rural school electrification in Ethiopia. Int J Renew Energ Res 3: 735-744.

4. Bajracharya I (2015) Assessment of Run-Of-River Hydropower Potential and Power Supply Planning in Nepal using Hydro Resources.

5. Clint Arthur Ouma (2011) Hybrid Energy System for Off–Grid Rural Electrification Master thesis university of Gotland.

6. HOMER beta 2.68 user manual, 2009

7. Akella AK, Saini RP, Sharma MP (2010) Sizing and cost analysis for integrated renewable energy system in a study area, In International Conference on Renewable Energies and Power Quality.

8. Ugirimbabazi O (2015) Analysis of Power System Options for Rural Electrification in Rwanda, Master's thesis, University of Agder.

9. HOMER® Pro Version 3.7 User Manual (2016) HOMER® Energy 1790 30th St Suite 100 Boulder CO 80301 US.

10. www.wholesalesolar.com/9900062/surrette.../surrette-rolls-6cs-25ps-flooded-battery

11. Nour M (2014) Prospect of stand-alone PV-diesel hybrid power system for rural electrification in UAE. Int J Renew Energ Res 4: 749-758.

12. http://www.kinpha.com/index/product/id/22.html

13. Ayodele TR, Ogunjuyigbe ASO (2014) mathematical methods and software tools for designing and economic analysis of hybrid energy system. Int J Renew Energ 9: 57-68.

14. Dilip Singh (2009) Micro hydro power resource assessment handbook Economic and social commission for Asia and the pacific (ESCAP)

15. Kimera R (2011) Consideration for a sustainable hybrid electric power mini-grid: case study for Wanale village in Uganda (Doctoral dissertation, University of Cape Town).

16. Tesfaye B (2011) Improved Sustainable Power Supply for Dagahabur and Kebridahar Town of Somalia Region in Ethiopia. Eykjavik Energy Graduate School of Sustainable Systems Master Thesis.

17. Sadiqi M, Pahwa A, Miller RD (2012) Basic design and cost optimization of a hybrid power system for rural communities in Afghanistan. In North American Power Symposium (NAPS), 2012 (pp. 1-6).

18. http://www.theecoexperts.co.uk/which-solar-panels-are-most-efficient#top

19. National renewable energy laboratory (NREL2016)

20. Ayodele TR, Ogunjuyigbe ASO (2014) Mathematical methods and software tools for designing and economic analysis of hybrid energy system. Int J Renew Energ 9: 57-68.

21. Marzband M, Parhizi N, Savaghebi M, et al. (2016) Distributed smart decision-making for a multimicrogrid system based on a hierarchical interactive architecture. IEEE Trans Energy Convers 31: 637-664.

22. Berihun G (2013) modeling and simulating of a micro hydro wind hybrid power generation system for rural area.