Geothermal energy is one of the strategies employed by the Indonesian government to meet rising electricity demand. Developing geothermal energy is often characterized by uncertainties and requires sequential decision-making which is divided into four development phases: 1) identification, 2) exploration, 3) exploitation, and 4) engineering, procurement, construction, and commissioning (EPPC) before it can be commercialized. Traditional valuation techniques often produce a negative net present value (NPV), suggesting decision to reject the project's investment plan. This paper investigates the economic viability of a geothermal power generation project using both NPV and real options analysis (ROA). Costs and uncertainties associated with the various development phases as well as the investment structure of geothermal projects are studied. We develop a framework for assessing the impact of four uncertainties using a binomial lattice: capacity factor, electricity price, make-up well-drilling costs, and operation and maintenance (O&M) costs. Secondary data from an Indonesian context geothermal power plant was used. Positive option values were found for the lattice approach compared to negative values found for the common NPV calculation. The result of this study showed the successful outcome of the exploration stage is very critical to determining the continuation of the project. The framework supports decision-makers in evaluating the impact of geothermal power generation projects in the face of uncertainty by providing a rigorous analysis. The movement of the underlying asset's value in the whole project's lifetime will assist the management in deciding on whether to exit or continue.
Citation: Marmelia P. Dewi, Andri D. Setiawan, Yusuf Latief, Widodo Wahyu Purwanto. Investment decisions under uncertainties in geothermal power generation[J]. AIMS Energy, 2022, 10(4): 844-857. doi: 10.3934/energy.2022038
Geothermal energy is one of the strategies employed by the Indonesian government to meet rising electricity demand. Developing geothermal energy is often characterized by uncertainties and requires sequential decision-making which is divided into four development phases: 1) identification, 2) exploration, 3) exploitation, and 4) engineering, procurement, construction, and commissioning (EPPC) before it can be commercialized. Traditional valuation techniques often produce a negative net present value (NPV), suggesting decision to reject the project's investment plan. This paper investigates the economic viability of a geothermal power generation project using both NPV and real options analysis (ROA). Costs and uncertainties associated with the various development phases as well as the investment structure of geothermal projects are studied. We develop a framework for assessing the impact of four uncertainties using a binomial lattice: capacity factor, electricity price, make-up well-drilling costs, and operation and maintenance (O&M) costs. Secondary data from an Indonesian context geothermal power plant was used. Positive option values were found for the lattice approach compared to negative values found for the common NPV calculation. The result of this study showed the successful outcome of the exploration stage is very critical to determining the continuation of the project. The framework supports decision-makers in evaluating the impact of geothermal power generation projects in the face of uncertainty by providing a rigorous analysis. The movement of the underlying asset's value in the whole project's lifetime will assist the management in deciding on whether to exit or continue.
| [1] | IRENA (2017) Renewable energy prospects: Indonesia, a REmap analysis. IRENA-Abu Dhabi Available from: https://www.irena.org/publications/2016/Jun/Unlocking-Renewable-Energy-Investment-The-role-of-risk-mitigation-and-structured-finance. |
| [2] | PLN (2019) RUPTL: Rencana Usaha Penyediaan Tenaga Listrik 2019–2028. Available from: https://web.pln.co.id/stakeholder/ruptl. |
| [3] | Adi AC, Lasnawatin F, Prananto A, et al. (2019) Handbook of energy and economic statistics of Indonesia 2018 Available from: https://www.esdm.go.id/en/publication/handbook-of-energy-economic-statistics-of-indonesia-heesi. |
| [4] | Bappenas (2021) Indonesia's updated NDC for a climate resilient future. Available from: http://greengrowth.bappenas.go.id/en/indonesias-updated-ndc-for-a-climate-resilient-future/. |
| [5] | Peraturan Pemerintah R (2015) Peraturan Pemerintah No 79/2014 Tentang Kebijakan Energi Nasional (Government Regulation No. 79/2014 concerning National Energy Policy). Jakarta: Sekretariat Negara (Indonesian Ministry of State Secretariat). Available from: https://peraturan.bpk.go.id/Home/Details/5523/pp-no-79-tahun-2014. |
| [6] |
Pambudi NA (2018) Geothermal power generation in Indonesia, a country within the ring of fire: Current status, future development and policy. Renewable Sustainable Energy Rev 81: 2893–2901. https://doi.org/10.1016/j.rser.2017.06.096 doi: 10.1016/j.rser.2017.06.096
|
| [7] |
Fan K, Nam S (2018) Accelerating geothermal development in Indonesia: A case study in the underutilization of geothermal energy. J Sustainable Dev 19: 103–129. https://doi.org/10.7916/D80K3SJQ doi: 10.7916/D80K3SJQ
|
| [8] |
Stefansson V (2002) Investment cost for geothermal power plants. Geothermics 31: 263–272. https://doi.org/10.1016/S0375-6505(01)00018-9 doi: 10.1016/S0375-6505(01)00018-9
|
| [9] | Meier P, Randle J, Lawless J, et al. (2014) Unlocking Indonesia's geothermal potential. Prepared for the Asian Development Bank. Available from: https://www.adb.org/sites/default/files/publication/157824/unlocking-indonesias-geothermal-potential.pdf. |
| [10] | Mangi PM (2016) Geothermal project management. Presented at SDG Short Course Ⅰ on Exploration and Development of Geothermal Resources, organized by UNU-GTP, GDC and KenGen, at Lake Bogoria and Lake Naivasha, Kenya, 10–31. Available from: https://orkustofnun.is/gogn/unu-gtp-sc/UNU-GTP-SC-23-0907.pdf. |
| [11] | Ngugi PK (2009) Geothermal well drilling. Short Course Ⅳ on Exploration for Geothermal Resources, organized by UNU-GTP, KenGen and GDC, at Lake Naivasha, Kenya, November, 1–22. Available from: https://orkustofnun.is/gogn/unu-gtp-sc/UNU-GTP-SC-10-0205.pdf. |
| [12] | Njoroge D (2016) Monitoring and evaluation framework for geothermal projects: Olkaria I Unit 6, Kenya. Iceland: UNU-GTP. Available from: https://orkustofnun.is/gogn/unu-gtp-report/UNU-GTP-2016-28.pdf. |
| [13] | Ngomi GM, Peketsa (2017) Project management for geothermal energy development SDG Short Course Ⅱ on Exploration and Development of Geothermal Resources, 9–29. Available from: https://orkustofnun.is/gogn/unu-gtp-sc/UNU-GTP-SC-25-1006.pdf. |
| [14] | Wahjosoedibjo AS, Hasan M (2018) Indonesia's geothermal development: where is it going? 43rd workshop on geothermal reservoir engineering, Stanford, California. Available from: https://pangea.stanford.edu/ERE/pdf/IGAstandard/SGW/2018/Hasan.pdf. |
| [15] |
Winters MS, Cawvey M (2015) Governance obstacles to geothermal energy development in Indonesia. J Curr Southeast Asian Aff 34: 27–56. https://doi.org/10.1177/186810341503400102 doi: 10.1177/186810341503400102
|
| [16] | Hadi J, Quinlivan P, Ussher G, et al. (2010) Resource risk assessment in geothermal greenfield development; an economic implications. World Geothermal Congress 2010, 25–29. Available from: https://www.geothermal-energy.org/pdf/IGAstandard/WGC/2010/0709.pdf. |
| [17] | Aragón-Aguilar A, Izquierdo-Montalvo G, Aragón-Gaspar DO, et al. (2019) Stages of a integrated geothermal project. Renewable Geothermal Energy Explorations: IntechOpen. https://doi.org/10.5772/intechopen.81017 |
| [18] | Gehringer M, Loksha V (2012) Geothermal handbook: Planning and financing power generation. Washington D.C.: World Bank, 164. Available from: https://www.esmap.org/sites/esmap.org/files/DocumentLibrary/FINAL_Geothermal%20Handbook_TR002-12_Reduced.pdf. |
| [19] | Purba D, Adityatama DW, Agustino V, et al. (2020) Geothermal drilling cost optimization in Indonesia: a discussion of various factors. 45th Workshop on Geothermal Reservoir Engineering, Standford University, Standford California, 14: 10–12. Available from: https://pangea.stanford.edu/ERE/db/GeoConf/papers/SGW/2020/Purba.pdf. |
| [20] |
Witter JB, Trainor-Guitton WJ, Siler DL (2019) Uncertainty and risk evaluation during the exploration stage of geothermal development: A review. Geothermics 78: 233–242. https://doi.org/10.1016/j.geothermics.2018.12.011 doi: 10.1016/j.geothermics.2018.12.011
|
| [21] | Speer B, Economy R, Lowder T, et al. (2014) Geothermal exploration policy mechanisms: lessons for the United States from international applications. National Renewable Energy Lab.(NREL), Golden, CO (United States). Available from: https://www.nrel.gov/docs/fy14osti/61477.pdf. |
| [22] |
Daniilidis A, Alpsoy B, Herber R (2017) Impact of technical and economic uncertainties on the economic performance of a deep geothermal heat system. Renewable Energy 114: 805–816. https://doi.org/10.1016/j.renene.2017.07.090 doi: 10.1016/j.renene.2017.07.090
|
| [23] | Van Putten AB, MacMillan IC (2004) Making real options really work. Harv Bus Rev 82: 134–142. Available from: https://hbr.org/2004/12/making-real-options-really-work |
| [24] |
Kumbaroğlu G, Madlener R, Demirel M (2008) A real options evaluation model for the diffusion prospects of new renewable power generation technologies. Energy Econ 30: 1882–1908. https://doi.org/10.1016/j.eneco.2006.10.009 doi: 10.1016/j.eneco.2006.10.009
|
| [25] | Mufudza T (2018) Dynamic strategy in a turbulent business environment. Strategic Management—A Dynamic View: IntechOpen. https://doi.org/10.5772/intechopen.81250 |
| [26] |
Yang B, Burns ND, Backhouse CJ (2004) Management of uncertainty through postponement. Int J Prod Res 42: 1049–1064. https://doi.org/10.1080/00207540310001631601 doi: 10.1080/00207540310001631601
|
| [27] |
Myers SC (1977) Determinants of corporate borrowing. J Financ Econ 5: 147–175. https://doi.org/10.1016/0304-405X(77)90015-0 doi: 10.1016/0304-405X(77)90015-0
|
| [28] |
Myers SC (1984) Finance theory and financial strategy. Interfaces 14: 126–137. https://doi.org/10.1287/inte.14.1.126 doi: 10.1287/inte.14.1.126
|
| [29] | Mun J (2006) Modeling risk: Applying monte carlo simulation, real options analysis, forecasting, and optimization techniques: John Wiley&Sons. |
| [30] |
Kogut B, Kulatilaka N (2001) Capabilities as real options. Organization Sci 12: 744–758. https://doi.org/10.1287/orsc.12.6.744.10082 doi: 10.1287/orsc.12.6.744.10082
|
| [31] | Copeland TE, Antikarov V (2001) Real Options: A Practitioner's Guide: Texere. Available from: https://books.google.co.id/books?id=fnhPAAAAMAAJ. |
| [32] |
Lander DM, Pinches GE (1998) Challenges to the practical implementation of modeling and valuing real options. Q Rev Econ Finance 38: 537–567. https://doi.org/10.1016/S1062-9769(99)80089-1 doi: 10.1016/S1062-9769(99)80089-1
|
| [33] | Fleten S-E, Maribu KM (2004) Investment timing and capacity choice for small-scale wind power under uncertainty. Lawrence Berkeley National Laboratory. Available from: https://escholarship.org/uc/item/6tj6v91j. |
| [34] |
Kitzing L, Juul N, Drud M, et al. (2017) A real options approach to analyse wind energy investments under different support schemes. Appl Energy 188: 83–96. https://doi.org/10.1016/j.apenergy.2016.11.104 doi: 10.1016/j.apenergy.2016.11.104
|
| [35] |
Lu Y, Khan ZA, Alvarez-Alvarado MS, et al. (2020) A critical review of sustainable energy policies for the promotion of renewable energy sources. Sustainability 12: 5078. https://doi.org/10.3390/su12125078. doi: 10.3390/su12125078
|
| [36] |
Martín-Barrera G, Zamora-Ramírez C, González-González JM (2016) Application of real options valuation for analysing the impact of public R&D financing on renewable energy projects: A company′s perspective. Renewable Sustainable Energy Rev 63: 292–301. https://doi.org/10.1016/j.rser.2016.05.073 doi: 10.1016/j.rser.2016.05.073
|
| [37] |
Ritzenhofen I, Spinler S (2016) Optimal design of feed-in-tariffs to stimulate renewable energy investments under regulatory uncertainty—A real options analysis. Energy Econ 53: 76–89. https://doi.org/10.1016/j.eneco.2014.12.008 doi: 10.1016/j.eneco.2014.12.008
|
| [38] |
Gazheli A, van den Bergh J (2018) Real options analysis of investment in solar vs. wind energy: Diversification strategies under uncertain prices and costs. Renewable Sustainable Energy Rev 82: 2693–2704. https://doi.org/10.1016/j.rser.2017.09.096 doi: 10.1016/j.rser.2017.09.096
|
| [39] |
Bøckman T, Fleten S-E, Juliussen E, et al. (2008) Investment timing and optimal capacity choice for small hydropower projects. Eur J Oper Res 190: 255–267. https://doi.org/10.1016/j.ejor.2007.05.044 doi: 10.1016/j.ejor.2007.05.044
|
| [40] |
Loncar D, Milovanovic I, Rakic B, et al. (2017) Compound real options valuation of renewable energy projects: The case of a wind farm in Serbia. Renewable Sustainable Energy Rev 75: 354–367. https://doi.org/10.1016/j.rser.2016.11.001 doi: 10.1016/j.rser.2016.11.001
|
| [41] |
Eissa MA, Tian B (2017) Lobatto-milstein numerical method in application of uncertainty investment of solar power projects. Energies 10: 43. https://doi.org/10.3390/en10010043 doi: 10.3390/en10010043
|
| [42] |
Kim K-K, Lee C-G (2012) Evaluation and optimization of feed-in tariffs. Energy Policy 49: 192–203. https://doi.org/10.1016/j.enpol.2012.05.070 doi: 10.1016/j.enpol.2012.05.070
|
| [43] | Sugiyono A (2012) Keekonomian Pengembangan PLTP Skala Kecil (The Feasibility of small scale geothermal power plant). Seminar Nasional Teknik Kimia Indonesia dan Musyawarah Nasional APTEKINDO, 20–24. Available from: https://www.academia.edu/23278618/Keekonomian_Pengembangan_PLTP_Skala_Kecil. |
| [44] |
Sakakibara K, Kanamura T (2020) Risk of temperature differences in geothermal wells and generation strategies of geothermal power. Green Finance 2: 424–436. https://doi.org/10.3934/GF.2020023 doi: 10.3934/GF.2020023
|
| [45] |
Siyuan C, Qi Z, Yanyan T, et al. (2019) Investment strategy for shallow geothermal resource based on real option model. Energy Procedia 158: 6118–6125. https://doi.org/10.1016/j.egypro.2019.01.500 doi: 10.1016/j.egypro.2019.01.500
|
| [46] |
Yu S, Li Z, Wei Y-M, et al. (2019) A real option model for geothermal heating investment decision making: Considering carbon trading and resource taxes. Energy 189: 116252. https://doi.org/10.1016/j.energy.2019.116252 doi: 10.1016/j.energy.2019.116252
|
| [47] | Bilqist RA, Dachyar M, Farizal F (2018) Project valuation in the geothermal power plant project: A comparison of expected net present value and static net present value approaches. International Conference on Multidisciplinary Academic (ICMA) 2018. https://doi.org/10.2139/ssrn.3248120 |
| [48] | Knaut A, Madlener R, Rosen C, et al. (2012) Effects of temperature uncertainty on the valuation of geothermal projects: A real options approach. Available from: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2329563. |
| [49] | Nugraha HA, Saefulhak Y, Pangaribuan B (2017) Study on the impacts of incentives to the geothermal energy electricity price in Indonesia using production-based cost approach. The 5th Indonesia International Geothermal Convention&Exhibition (IIGCE). Available from: https://www.researchgate.net/publication/318420449_A_Study_on_the_Impacts_of_Incentives_to_the_Geothermal_Energy_Electricity_Price_in_Indonesia_using_Production-based_Cost_Approach#fullTextFileContent. |
| [50] | Purwaningsih FO, Husnie R, Afuar W, et al. (2017) Make-up wells drilling cost in financial model for a geothermal project. IOP Publishing, 012010. https://doi.og/10.1088/1755-1315/103/1/012010 |
| [51] | Sanyal SK, Morrow JW (2011) An investigation of drilling success in geothermal exploration, development and operation. Geotherm Resour Counc Trans 35: 233–237. Available from: https://www.geothermal-library.org/index.php?mode=pubs&action=view&record=1029246. |
| [52] | Sanyal SK (2005) Cost of geothermal power and factors that affect it, 24–29. Available from: https://www.geothermal-energy.org/pdf/IGAstandard/WGC/2005/0010.pdf. |
| [53] | EBTKE D (2017) Buku Potensi Panas Bumi(Geothermal Potential Book) 2017. Available from: https://ebtke.esdm.go.id/post/2017/09/25/1751/buku.potensi.panas.bumi.2017. |
| [54] |
Croucher M (2011) Potential problems and limitations of energy conservation and energy efficiency. Energy Policy 39: 5795–5799. https://doi.org/10.1016/j.enpol.2011.07.011 doi: 10.1016/j.enpol.2011.07.011
|
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Marmelia P. Dewi, Andri D. Setiawan, Yusuf Latief, Widodo Wahyu Purwanto. Investment decisions under uncertainties in geothermal power generation[J]. AIMS Energy, 2022, 10(4): 844-857. doi: 10.3934/energy.2022038
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