Green Finance, 2019, 1(2): 139-155. doi: 10.3934/GF.2019.2.139.

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The importance of financial cost for renewable energy projects: economic viability assessment of renewable hybrid mini-grid systems in Indonesia

1 Department of Urban and Environmental Engineering, Kyushu University, Fukuoka, Japan
2 World Bank Disaster Risk Management Hub, Tokyo, Japan
3 Urban Institute, Kyushu University, Fukuoka, Japan

Special Issues: Energy Finance

Still a lot of Indonesia’s population lacks access to electricity, and a large number of those people live in remote areas or on islands. Traditionally, electrification of areas not yet connected to the main electricity grid and too remote for grid extension has mainly been achieved through installation of decentralized generation units with diesel generators. However, with decreased cost of renewable energy technologies, renewable hybrid mini-grid systems are becoming economically viable options in an ever-increasing number of places. This paper analyzes the economic viability of renewable hybrid mini-grid systems with solar Photo-Voltaic cells, batteries, and diesel generators in a typical un-electrified village in Indonesia employing local data. The analysis is conducted by utilizing HOMER simulation techniques to design the optimal renewable hybrid mini-grid systems and the economic viability assessment of the system is performed by comparing the levelized cost of energy of the system with that of the conventional diesel system under different financial scenarios. Further financial analyses, such as Internal Rate of Return and Net Present Value, are performed for the hybrid systems to investigate what kind of financial scenarios (debt/equity ratios) and public aid (international aid and government fund), would make the hybrid systems attractive to private investors. The analysis has clarified that even at the most conservative scenario with 100% equity finance, the levelized cost of energy of the renewable hybrid mini-grid system is lower than that of the diesel system. Further analysis has shown that grant finance that covers 35% of the total project cost could make the hybrid system a profitable investment project for private investors even in the most conservative scenario. The paper also demonstrates that the profitability of renewable hybrid mini-grid systems is highly affected by financial scenarios (debt/equity ratios) in comparison with that of diesel systems, concluding with policy recommendations.
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Keywords electrification; LCOE; hybrid; mini-grid; renewable energy; IRR; NPV

Citation: Alexander Ryota Keeley, Shunsuke Managi. The importance of financial cost for renewable energy projects: economic viability assessment of renewable hybrid mini-grid systems in Indonesia. Green Finance, 2019, 1(2): 139-155. doi: 10.3934/GF.2019.2.139


  • 1. Adaramola MS, Agelin-Chaab M, Paul SS (2014) Analysis of hybrid energy systems for application in southern Ghana. Energy Conv Manag 88: 284–295.    
  • 2. Bhattacharyya SC (2013) Rural Electrification Experience from South-East Asia and South America, Rural Electrification Through Decentralised Off-grid Systems in Developing Countries, Springer, London, 157–184.
  • 3. Blum NU, Wakeling RS, Schmidt TS (2013) Rural electrification through village grids-Assessing the cost competitiveness of isolated renewable energy technologies in Indonesia. Renew Sustain Energy Rev 22: 482–496.    
  • 4. Chowdhury SA, Aziz S, Groh S, et al. (2015) Off-grid rural area electrification through solar-diesel hybrid minigrids in Bangladesh: resource-efficient design principles in practice. J Clean Prod 95: 194–202.    
  • 5. Fernandez P, Ortiz Pizarro A, Acín IF (2016) Market Risk Premium Used in 71 Countries in 2016: A Survey with 6,932 Answers. SSRN.
  • 6. Fu R, Chung D, Lowder T, et al. (2016) U.S. Solar Photovoltaic System Cost Benchmark: Q1 2016. National Renewable Energy Laboratory, Golden.
  • 7. IEA (2016) Residential fuel price in Indonesia (in press), IEA, Paris.
  • 8. IEA (2015a) Trends in photovoltaic applications 2015, Survey Report of Selected IEA Countries between 1992 and 2014, IEA, Paris.
  • 9. IEA (2015b) World energy outlook 2015, IEA, Paris.
  • 10. Kusdiana DSA (2008) Implementation of rural energy by renewable energy in Indonesia. In: Workshop on Rural Electrification, Paris, 28–29.
  • 11. Lazard (2016) Lazard's Levelized Cost of Energy Analysis - Version 10.0. Lazard, Chicago. Available from:
  • 12. Lazard (2015) Lazard's Levelized Cost of Energy Analysis - Version 9.0. Lazard, Chicago. Available from:
  • 13. Lazard (2014) Lazard's Levelized Cost of Energy Analysis - Version 8.0. Lazard, Chicago. Available from:
  • 14. Lazard (2013) Lazard's Levelized Cost of Energy Analysis - Version 7.0. Lazard, Chicago. Available from:
  • 15. Lazard (2012) Lazard's Levelized Cost of Energy Analysis - Version 6.0. Lazard, Chicago. Available from:
  • 16. Lazard (2011) Lazard's Levelized Cost of Energy Analysis - Version 5.0. Lazard, Chicago. Available from:
  • 17. Lazard (2010) Lazard's Levelized Cost of Energy Analysis - Version 4.0. Lazard, Chicago. Available from:
  • 18. Lazard (2009) Lazard's Levelized Cost of Energy Analysis - Version 3.0. Lazard, Chicago. Available from:
  • 19. Lazard (2008) Lazard's Levelized Cost of Energy Analysis - Version 2.0. Lazard, Chicago. Available from:
  • 20. MEMR (2016) Renewable Energy based Microgrid Installation 2011–2016 (in press). Directorate of Various New Energy and Renewable Energy, Jakarta.
  • 21. NASA Surface Meteorology and Solar Energy database. Accessed on June 12th, 2017. Available from:
  • 22. Nerini FF, Broad O, Mentis D, et al. (2016) A cost comparison of technology approaches for improving access to electricity services. Energy 95: 255–265.    
  • 23. Phuangpornpitak N, Kumar S (2007) PV hybrid systems for rural electrification in Thailand. Renew Sustain Energy Rev 11: 1530–1543.    
  • 24. PLN (2016) Electricity Supply Business Plan PT PLN 2016–2025, PLN, Jakarta.
  • 25. Rauch R (2014) Grid-Connected PV Systems-Business and Technological Opportunities and Developments in Indonesia, GIZ Indonesia, Jakarta.
  • 26. Tolliver C, Keeley AR, Managi S (2019) Green bonds for the Paris Agreement and sustainable development goals. Environ Res Lett.
  • 27. Trading Economics (2017) Indonesia Government Bond 10Y. Accessed on June 15th, 2017. Available from:
  • 28. Tsuanyo D, Azoumah Y, Aussel D, et al. (2015) Modeling and optimization of batteryless hybrid PV (photovoltaic)/Diesel systems for off-grid applications. Energy 86: 152–163.    
  • 29. UNDP Indonesia (2009) Rural development with renewable energy: Project Facts. UNDP Indonesia, Jakarta.


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