The Determination of Optimal Operating Condition For an Off-Grid Hybrid Renewable Energy Based Micro-Grid: A Case Study in Izmir, Turkey

  • sezai polat Yasar University
  • Hacer Sekerci Electrical and Electronics Engineering Department, Engineering Faculty, Yasar University, Izmir, Turkey
Keywords: Hybrid system, Homer, Renewable energy, Control strategy, Energy cost, Optimization


Nowadays, off-grid systems, which do not require grid connection investment instead of grid connected systems, have become quite feasible. In this study, a feasibility analysis was carried out for a hybrid energy system using solar and wind energy sources to supply to uninterrupted electricity demand of a region with 100 villas in Izmir, Turkey. It has been shown that how changes cost of the hybrid energy system sizing according to the control strategies by using the HOMER software. In the paper, two different control strategies are determined as Cycle Charging (CC) and Load Following (LF), and then the control strategies are compared. According to the results obtained as a result of the simulations, it has been revealed that the research region to operate with CC can supply to the electrical energy demand with lower capacity system architecture. The CC was found to be more suitable for the research region than LF in terms of both Cost of Energy (COE) and Net Preset Cost (NPC).


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S. Upadhyay and M. P. Sharma, “A review on configurations, control and sizing methodologies of hybrid energy systems,” Renewable and Sustainable Energy Reviews, vol. 38, pp. 47–63, 2014.

T. Strasser et al., “A Review of Architectures and Concepts for Intelligence in Future Electric Energy Systems,” IEEE Transactions on Industrial Electronics, vol. 62, no. 4, pp. 2424–2438, 2015.

S. Polat and H. Şekerci, “Dünyada ve Ülkemi̇zde Önemli̇ Elektri̇k Çöküntüleri̇,” ETUK - National Congress and Exhibition of Electrical Installation, pp. 1–12.

“Ministry of Energy and Natural Resources.” (accessed Feb. 14, 2021).

S. Polat and H. Sekerci, “Analysis of Economic Effects of Different Control Strategies in a Hybrid Energy System,” in 2020 Innovations in Intelligent Systems and Applications Conference (ASYU), Oct. 2020, pp. 1–6.

S. O. Sanni, A. AWAISU, and T. S. AJAYI, “Optimal Design and Cost Analysis of Hybrid Autonomous Distributed Generation System for a Critical Load,” EMITTER International Journal of Engineering Technology, vol. 6, no. 2, pp. 337–353, 2018.

M. Bagheri, S. H. Delbari, M. Pakzadmanesh, and C. A. Kennedy, “City-integrated renewable energy design for low-carbon and climate-resilient communities,” Applied Energy, vol. 239, pp. 1212–1225, 2019.

M. O. Atallah, M. A. Farahat, M. E. Lotfy, and T. Senjyu, “Operation of conventional and unconventional energy sources to drive a reverse osmosis desalination plant in Sinai Peninsula, Egypt,” Renewable Energy, vol. 145, pp. 141–152, 2020.

M. Haratian, P. Tabibi, M. Sadeghi, B. Vaseghi, and A. Poustdouz, “A renewable energy solution for stand-alone power generation: A case study of KhshU Site-Iran,” Renewable Energy, vol. 125, pp. 926–935, 2018.

E. Muh and F. Tabet, “Comparative analysis of hybrid renewable energy systems for off-grid applications in Southern Cameroons,” Renewable Energy, vol. 135, pp. 41–54, 2019.

M. R. Elkadeem, S. Wang, A. M. Azmy, E. G. Atiya, Z. Ullah, and S. W. Sharshir, “A systematic decision-making approach for planning and assessment of hybrid renewable energy-based microgrid with techno-economic optimization: A case study on an urban community in Egypt,” Sustainable Cities and Society, vol. 54, p. 102013, 2020.

A. Singh, P. Baredar, and B. Gupta, “Computational Simulation & Optimization of a Solar, Fuel Cell and Biomass Hybrid Energy System Using HOMER Pro Software,” Procedia Engineering, vol. 127, pp. 743–750, 2015.

Z. Abdin and W. Mérida, “Hybrid energy systems for off-grid power supply and hydrogen production based on renewable energy: A techno-economic analysis,” Energy Conversion and Management, vol. 196, pp. 1068–1079, 2019.

H. Z. Al Garni, A. Awasthi, and M. A. M. Ramli, “Optimal design and analysis of grid-connected photovoltaic under different tracking systems using HOMER,” Energy Conversion and Management, vol. 155, pp. 42–57, 2018.

G. Veilleux et al., “Techno-economic analysis of microgrid projects for rural electrification: A systematic approach to the redesign of Koh Jik off-grid case study,” Energy for Sustainable Development, vol. 54, pp. 1–13, 2020.

A. C. Duman and Ö. Güler, “Economic analysis of grid-connected residential rooftop PV systems in Turkey,” Renewable Energy, vol. 148, pp. 697–711, 2020.

GEPA, “Solar energy potential atlas.” (accessed Jun. 11, 2020).

REPA, “Wind energy potential atlas.” Accessed: Feb. 01, 2020. [Online]. Available: (accessed Jun. 11, 2020).

“Pecan Street.” (accessed May 09, 2021).

NASA-POWER, “NASA POWER, Prediction Of Worldwide Energy Resources.” (accessed Sep. 06, 2020).

T. M. Azerefegn, R. Bhandari, and A. V. Ramayya, “Techno-economic analysis of grid-integrated PV/wind systems for electricity reliability enhancement in Ethiopian industrial park,” Sustainable Cities and Society, vol. 53, p. 101915, 2020.

HOMER Energy LLC, “HOMER Pro Version 3.7 User Manual,” HOMER Energy. Colorado USA, p. 416, 2016, (accessed Jan. 19, 2021).

N. K. Kaynar, “Yenilenebilir Enerji Kaynaklarından Güneş Enerjisinin Amasya İlindeki Potansiyeli Potential of Solar Energy from Renewable Energy Sources in Amasya,” Bilge International Journal of Science and Technology Research, pp. 48–54, 2020.

“Generac Industrial Power - 250kW Diesel Generator-SD250.” (accessed May 13, 2021).

Tesvolt, “High-voltage lithium storage system TS HV 70 | Tesvolt GmbH.” (accessed Jan. 19, 2021).

H. Zahboune, S. Zouggar, G. Krajacic, P. S. Varbanov, M. Elhafyani, and E. Ziani, “Optimal hybrid renewable energy design in autonomous system using Modified Electric System Cascade Analysis and Homer software,” Energy Conversion and Management, vol. 126, pp. 909–922, 2016.

S. Bahramara, M. P. Moghaddam, and M. R. Haghifam, “Optimal planning of hybrid renewable energy systems using HOMER: A review,” Renewable and Sustainable Energy Reviews, vol. 62, pp. 609–620, 2016.

A. Gupta, R. P. Saini, and M. P. Sharma, “Modelling of hybrid energy system—Part II: Combined dispatch strategies and solution algorithm,” Renewable Energy, vol. 36, no. 2, pp. 466–473, 2011.

A. Haffaf, F. Lakdja, R. Meziane, and D. O. Abdeslam, “Study of economic and sustainable energy supply for water irrigation system (WIS),” Sustainable Energy, Grids and Networks, vol. 25, p. 100412, 2021.

W. Margaret Amutha and V. Rajini, “Techno-economic evaluation of various hybrid power systems for rural telecom,” Renewable and Sustainable Energy Reviews, vol. 43, pp. 553–561, 2015.

How to Cite
polat, sezai, & Hacer Sekerci. (2021). The Determination of Optimal Operating Condition For an Off-Grid Hybrid Renewable Energy Based Micro-Grid: A Case Study in Izmir, Turkey. EMITTER International Journal of Engineering Technology, 9(1), 137-153.