||Feasibility Study of Solar-Powered Desalination Application in Remote Areas: Case of Indonesia
||International Master Degree Program on Energy Engineering
||Arsanto Ishadi Wibowo
water treatment system
引入了兩個用水理念：理念一僅考慮飲用和烹飪用水，理念二還考慮盡加入水質要求較低的衛浴用水。另選出三個較成熟的利用太陽能蒸餾技術包括solar still, hybrid solar,和 Solar Humidification-Dehumidification (HDH)方法來產生乾淨的淡水。
利用回收年限以及淨現值方法來分析三個系統，分別用於單一家庭規模投資和社區投資。 結果以單一家庭為基礎的投資需要花費高昂的資本成本，其中solar still技術相對較為可行；若可以社區為開發基礎，solar HDH的這項技術相對較可行，區內每個家庭所需付出的成本也較以單一家庭為基礎的投資較低，但是還需要考慮一些其他優惠配套對策才能使這項投資具有投資吸引力。對於社區而言，與瓶裝水之售價相比，該系統提供的淨水投資價格仍是可觀，因為瓶裝水是這些地區現階段可以安全使用的飲用水，但仍遠遠高於一般城市使用的自來水。
Remote areas usually lack basic clean water services. Considering low population, poor geographical accessibility, and lack of electricity, a small-scaled water treatment system capable of producing clean fresh water associated with solar thermal/photovoltaic applications, which is characterized with low capital cost, easy operation and less need of maintenance, is employed in the techno-economic study. Indonesia is one of the countries which own a lot of water resources in their territories but have moderate coverage in water basic services. As a result, it is easy to cause waterborne diseases outbreaks such as diarrhea in Indonesia. Three remote villages in islets and three remote villages in inland, which reflect the disadvantage areas having clean water services of Indonesia, are chosen as the investigated locations in the study.
There are two scenarios of water demand discussed in the study. Scenario 1 considers single-grade water for drinking and food preparing, while Scenario 2 considers double-grade water including not only the water demand for drinking and food preparing but also the water demand with less strict quality for bathing, which is provided by mixing of the distilled water with the pre-treated water. Three available solar distillation technologies, including the solar still, hybrid solar and Solar Humidification-Dehumidification (HDH), are investigated in the study.
Both economic analyses in terms of payback period and NPV are employed for the feasibility study. Solar still is a feasible technology for most of household-based investment cases under either Scenario 1 or 2, although its yield is the lowest, among the three investigated technologies due to the shorter payback period (or higher NPV). In contrast, no case with solar HDH for the household-based investment can reach its payback before the system lifetime (assuming 15 years in the study). The performance of hybrid solar is in between these two technologies.
As far as the community-based investment is concerned, solar HDH is preferable among the three investigated technologies due to its shortest payback periods (around 10 and 6 years under Scenario 1 and 2, respectively) or highest positive NPVs. The selling water price obtained with hybrid solar has totally no potential to compete with that of the refilled bottle water ($18.15 / m3) adopted in the study.
Table of Contents i
List of Figures iv
List of Tables vii
List of Abbreviations viii
1 Introduction 1
1.1 Background and Motivation 1
1.1.1 Water Needs 1
1.1.2 Water and Health 3
1.1.3 Water in rural area 4
1.2 Water Need in Indonesia 4
1.2.1 General Situation 4
1.2.2 Remote Areas in Indonesia 8
1.2.3 Case of Remote Villages in Island 9
1.2.4 Case of Coastal Villages in Islets 10
1.3 Water Requirement 10
1.4 Solar Resources in Indonesia 12
1.5 Objectives and Limitations 13
2 Water Treatment 15
2.1 Available Developed Technologies 15
2.1.1 Solar thermal distillation 19
18.104.22.168 Solar still technology 19
22.214.171.124 Solar humidification-dehumidification system 21
126.96.36.199 Solar thermal-photovoltaic coupled desalination system – named the hybrid solar system hereafter 24
2.1.2 Pre-treatment system 26
2.2 Energy Demand in Distillation Process from Brackish Water to Fresh Water 27
2.3 Two-Stage Water Treatment Process 28
3 Approach for Analysis 30
3.1 Estimate of Water Demand in Remote Village 30
3.2 Distilled Water Quality or Water Treatment System 31
3.3 Estimate of Energy Demand for Water Treatment System 32
3.4 Estimate of System Capacity and Component Sizing 33
3.5 Cost Estimate 35
3.6 Estimate of Payback Period 38
3.7 Estimate of Net Present Value 39
4 Results and Discussion 40
4.1 Locations Selected for Study 40
4.2 Water Demand 42
4.3 System Sizing 43
4.4 Levelized Water Cost 46
4.4.1 Household-Based Investment 47
4.4.2 Community-Based Investment 52
4.5 Economic Analysis 54
4.5.1 Payback Period 54
4.5.2 Parametric Sensitivity Analysis 59
4.5.3 Population Expenditure Concern 66
5 Conclusions and Recommendation for Future Work 68
5.1 Conclusion 68
5.2 Recommendations for Future Work 70
Appendix 1 Estimates of Daily Production Rates with the Solar Still and the Hybrid Solar System 80
Appendix 2 Water Flow Rates in Various Steps of the Water Treatment System 82
Appendix 3 Cost Breakdown of Investment for Household Base 83
Appendix 4 Cost Breakdown of Investment for Community Base 86
Appendix 5 Example of the Setting of Each Item in Calculation Procedure of Economic Analysis 89
 International Energy Agency, Water Energy Nexus. Paris: International Energy Agency, 2016.
 United Nations World Water Assessment Programme (WWAP), United Nations World Water Development Report. Paris: UNESCO, 2006.
 B. M. Popkin, K. E. D’Anci, and I. H. Rosenberg, “Water, hydration, and health,” Nutrition Reviews, vol. 68, no. 8, pp. 439–458, Aug. 2010, doi: 10.1111/j.1753-4887.2010.00304.x.
 United Nations, Sustainable Development Goal 6 Synthesis Report 2018 on Water and Sanitation. New York: United Nations, 2018.
 World Health Organization (WHO), “Guidelines for Drinking-water Quality - Fourth Edition.” WHO, 2011.
 United States Environmental Protection Agency, “2018 Edition of the Drinking Water Standards and Health Advisories.” US EPA, Mar. 2018.
 P. H. Gleick, “Basic water requirements for human activities: Meeting basic needs,” Water International, vol. 21, no. 2, pp. 83–92, Jun. 1996, doi: 10.1080/02508069608686494.
 United Nations, “World Urbanization Prospects: The 2018 Revision,” UN, New York, 2019.
 Wiyanti, T. B. Kusmiyarti, N. M. Trigunasih, and N. Juwita, “Analysis of Water Availability for Domestic Needs in Denpasar City,” IOP Conference Series: Earth and Environmental Science, vol. 98, p. 012036, Dec. 2017, doi: 10.1088/1755-1315/98/1/012036.
 World Economic Forum, Global Risks 2015. Geneva: World Economic Forum, 2015.
 World Health Organization (WHO) and United Nations Children’s Fund (UNICEF), Progress on drinking water, sanitation and hygiene: 2017 update and SDG baselines. Geneva: WHO, 2017.
 M. M. Mekonnen and A. Y. Hoekstra, “Four billion people facing severe water scarcity,” Sci Adv, vol. 2, no. 2, p. e1500323, Feb. 2016, doi: 10.1126/sciadv.1500323.
 B. Reed, “Minimum Water Quantity Needed for Domestic Uses in Emergencies,” WHO, Geneva, WHO Technical Notes for Emergencies Technical Note No. 9, 2013.
 World Health Organization (WHO), “Water sanitation hygiene, Diseases and risks,” 2018. www.who.int/water_sanitation_health/diseases-risks/en (accessed Oct. 18, 2018).
 United Nations, “Sustainable Development Goal 3,” Sustainable Development Goal 3, 2018. https://sustainabledevelopment.un.org/sdg3 (accessed Oct. 18, 2018).
 United Nations, “Water, sanitation and hygiene interventions to prevent diarrhoea,” Water, sanitation and hygiene interventions to prevent diarrhoea, 2018. https://www.who.int/elena/titles/wsh_diarrhoea/en/ (accessed Oct. 18, 2018).
 International Vaccine Access Center (IVAC) and Johns Hopkins Bloomberg School of Public Health, Pneumonia and Diarrhea Progress Report 2018. Baltimore: International Vaccine Access Center, 2018.
 BPS-Statistics Indonesia, Statistical Yearbook of Indonesia 2018. Jakarta: BPS-Statistics Indonesia, 2018.
 BPS-Statistics Indonesia, Statistical Yearbook of Indonesia 2019. Jakarta: BPS-Statistics Indonesia, 2019.
 The World Bank, “Gross Domestic Product (GDP),” 2018. https://data.worldbank.org/ (accessed Oct. 18, 2018).
 Ministry of Energy and Mineral Resources Republic of Indonesia, “Energy Berkeadilan [Energy Equity],” Ministry of Energy and Mineral Resources Republic of Indonesia, Jakarta, Nov. 2018.
 United Nations Children’s Fund (UNICEF) and National Development Planning Agency Republic of Indonesia, “Goal 06 Clean Water and Sanitation,” 2018. https://sdg4children.or.id (accessed Oct. 18, 2019).
 Ministry of Public Works and Public Housing Republic of Indonesia, “Buku Informasi Statistik 2017 [Statistic Information Book 2017],” Ministry of Public Works and Public Housing Republic of Indonesia, Jakarta, 2017.
 BPS-Statistics Indonesia, Environment Statistic Indonesia 2017. Jakarta: BPS-Statistics Indonesia, 2017.
 Ministry of Environment and Forestry Republic of Indonesia, “Indeks Kualitas Lingkungan Hidup Indonesia 2017 [Environmental Quality Index Indonesia 2017],” Ministry of Environment and Forestry Republic of Indonesia, Jakarta, 2018.
 Indonesian National Board for Disaster Management, “55 Wilayah kabupaten dan kota tetapkan status siaga darurat kekeringan [55 City and township stated emergency of drought],” 2019. https://bnpb.go.id/55-wilayah-kabupaten-dan-kota-tetapkan-status-siaga-darurat-kekeringan (accessed Aug. 18, 2019).
 A. Anwar and A. Musadad, “Pengaruh Akses Penyediaan Air Bersih Terhadap Kejadian Diare Pada Balita [The Influence of clean water access on diarrhea incidence among children under five-years old],” Indonesian Journal of Health Ecology, vol. 8, no. 2, Jun. 2009, doi: 10.22435/jek.v8i2 Jun.1673.
 A. Komarulzaman, J. Smits, and E. de Jong, “Clean water, sanitation and diarrhoea in Indonesia: Effects of household and community factors,” Global Public Health, vol. 12, no. 9, pp. 1141–1155, Sep. 2017, doi: 10.1080/17441692.2015.1127985.
 A. A. Patunru, “Access to Safe Drinking Water and Sanitation in Indonesia: Water and sanitation in Indonesia,” Asia and the Pacific Policy Studies, vol. 2, no. 2, pp. 234–244, May 2015, doi: 10.1002/app5.81.
 National Population and Family Planning Board, Statistical Indonesia, Ministry of Health - Kemenkes, and ICF, Indonesia Demographic and Health Survey 2017. Jakarta, Indonesia: BKKBN, BPS, Kemenkes, and ICF, 2018.
 Ministry of Health Republic of Indonesia, Profil Kesehatan Indonesia 2017 [Indonesia Health Profile 2017]. Jakarta: Ministry of Health Republic of Indonesia, 2018.
 Institute for Health Metrics and Evaluation, “Indonesia Country Profile,” Institute for Health Metrics and Evaluation, Sep. 09, 2015. http://www.healthdata.org/indonesia (accessed Feb. 12, 2020).
 The World Bank, “Life expectancy at birth, total (years),” 2019. https://data.worldbank.org/indicator/SP.DYN.LE00.IN (accessed Aug. 18, 2019).
 K. Fagerli et al., “Comparison of boiling and chlorination on the quality of stored drinking water and childhood diarrhoea in Indonesian households,” Epidemiol. Infect., vol. 145, no. 15, pp. 3294–3302, Nov. 2017, doi: 10.1017/S0950268817002217.
 M. A. Abdelkareem, M. El Haj Assad, E. T. Sayed, and B. Soudan, “Recent progress in the use of renewable energy sources to power water desalination plants,” Desalination, vol. 435, pp. 97–113, Jun. 2018, doi: 10.1016/j.desal.2017.11.018.
 D. A. Ciochetti and R. H. Metcalf, “Pasteurization of naturally contaminated water with solar energy.,” Appl. Environ. Microbiol., vol. 47, no. 2, p. 223, Feb. 1984.
 B. Reyneke, T. E. Cloete, S. Khan, and W. Khan, “Rainwater harvesting solar pasteurization treatment systems for the provision of an alternative water source in peri-urban informal settlements,” Environ. Sci.: Water Res. Technol., vol. 4, no. 2, pp. 291–302, 2018, doi: 10.1039/C7EW00392G.
 B. Haryanto and S. Sutomo, “Improving access to adequate water and basic sanitation services in Indonesia,” Reviews on Environmental Health, vol. 27, no. 4, Jan. 2012, doi: 10.1515/reveh-2012-0022.
 Ministry of Home Affairs Republic of Indonesia, Management of Regional-owned Property. 2016.
 Ministry of Home Affairs Republic of Indonesia, Calculation and Determination of Drinking Water Tariff. 2016.
 Ministry of Public Works and Public Housing Republic of Indonesia, “Identifikasi Lokasi Desa Terpencil Desa Tertinggal dan Pulau-Pulau Kecil [Identification of Remote Village and Islets],” 2018. http://ciptakarya.pu.go.id (accessed Nov. 10, 2018).
 Ministry of Village, Development of Disadvantaged Regions and Transmigration, “Four Priority Programs Accelerate Village Development,” 2019. https://www.kemendesa.go.id/content/detail_infografis/4%20Program%20Prioritas%20Pembangunan%20Desa (accessed Aug. 19, 2019).
 K. Schwerdtner Máñez, S. Husain, S. C. A. Ferse, and M. Máñez Costa, “Water scarcity in the Spermonde Archipelago, Sulawesi, Indonesia: Past, present and future,” Environmental Science & Policy, vol. 23, pp. 74–84, Nov. 2012, doi: 10.1016/j.envsci.2012.07.004.
 Ministry of Maritime Affairs and Fisheries Republic of Indonesia, “Refleksi 2014 dan Outlook 2015 [Reflection 2014 and Outlook 2015],” Ministry of Maritime Affairs and Fisheries Republic of Indonesia, Jakarta, Jan. 2015.
 J. Ayoub and R. Alward, “Water requirements and remote arid areas: the need for small-scale desalination,” Desalination, vol. 107, no. 2, pp. 131–147, Oct. 1996, doi: 10.1016/S0011-9164(96)00158-0.
 Ministry of Public Works and Public Housing Republic of Indonesia, 2018. http://puskim.pu.go.id (accessed Nov. 18, 2018).
 Ministry of Maritime Affairs and Fisheries Republic of Indonesia, “Law of the Republic of Indonesia number 27 of 2007 Concerning the Management of Coastal Zones and Small Islands,” 2007. http://www.kkp.go.id/ (accessed Feb. 08, 2020).
 Ministry of Maritime Affairs and Fisheries Republic of Indonesia, “Island Development: Desalination for watering the island.” http://www.ppk-kp3k.kkp.go.id/ver3/news/read/114/mengairi-pulau-dengan-desalinasi (accessed Feb. 08, 2020).
 G. Howard and J. Bartram, “Domestic water quantity, service level and health,” World Health Organization, no. WHO/SDE/WSH/03.02, 2003, [Online]. Available: https://apps.who.int/iris/handle/10665/67884.
 J. Liu, C. Mei, H. Wang, W. Shao, and C. Xiang, “Powering an island system by renewable energy—A feasibility analysis in the Maldives,” Applied Energy, vol. 227, pp. 18–27, Oct. 2018, doi: 10.1016/j.apenergy.2017.10.019.
 Solargis, “Solar Resource and Photovoltaic Power Potential of Indonesia,” The World Bank, Washington DC, 170–09/2017, 2017.
 President Republic of Indonesia, National Energy Policy. 2014.
 Solargis, “Global Solar Atlas.” https://globalsolaratlas.info/map (accessed Sep. 08, 2019).
 Y. Zhang, M. Sivakumar, S. Yang, K. Enever, and M. Ramezanianpour, “Application of solar energy in water treatment processes: A review,” Desalination, vol. 428, pp. 116–145, Feb. 2018, doi: 10.1016/j.desal.2017.11.020.
 Chandrashekara M and A. Yadav, “Water desalination system using solar heat: A review,” Renewable and Sustainable Energy Reviews, vol. 67, pp. 1308–1330, Jan. 2017, doi: 10.1016/j.rser.2016.08.058.
 E. Delyannis and V. Belessiotis, “Desalination: The recent development path,” Desalination, vol. 264, no. 3, pp. 206–213, Dec. 2010, doi: 10.1016/j.desal.2010.05.045.
 A. Pugsley, A. Zacharopoulos, J. D. Mondol, and M. Smyth, “Global applicability of solar desalination,” Renewable Energy, vol. 88, pp. 200–219, Apr. 2016, doi: 10.1016/j.renene.2015.11.017.
 A. Al-Karaghouli and L. L. Kazmerski, “Energy consumption and water production cost of conventional and renewable-energy-powered desalination processes,” Renewable and Sustainable Energy Reviews, vol. 24, pp. 343–356, Aug. 2013, doi: 10.1016/j.rser.2012.12.064.
 H. Sharon and K. S. Reddy, “A review of solar energy driven desalination technologies,” Renewable and Sustainable Energy Reviews, vol. 41, pp. 1080–1118, Jan. 2015, doi: 10.1016/j.rser.2014.09.002.
 W. Abdelmoez, M. S. Mahmoud, and T. E. Farrag, “Water desalination using humidification/dehumidification (HDH) technique powered by solar energy: a detailed review,” Desalination and Water Treatment, vol. 52, no. 25–27, pp. 4622–4640, Jul. 2014, doi: 10.1080/19443994.2013.804457.
 F. E. Ahmed, R. Hashaikeh, and N. Hilal, “Solar powered desalination – Technology, energy and future outlook,” Desalination, vol. 453, pp. 54–76, Mar. 2019, doi: 10.1016/j.desal.2018.12.002.
 A. Al-Karaghouli, D. Renne, and L. L. Kazmerski, “Solar and wind opportunities for water desalination in the Arab regions,” Renewable and Sustainable Energy Reviews, vol. 13, no. 9, pp. 2397–2407, Dec. 2009, doi: 10.1016/j.rser.2008.05.007.
 F. Banat and N. Jwaied, “Economic evaluation of desalination by small-scale autonomous solar-powered membrane distillation units,” Desalination, vol. 220, no. 1, pp. 566–573, Mar. 2008, doi: 10.1016/j.desal.2007.01.057.
 Z. M. Omara, M. A. Eltawil, and E. A. ElNashar, “A new hybrid desalination system using wicks/solar still and evacuated solar water heater,” Desalination, vol. 325, pp. 56–64, Sep. 2013, doi: 10.1016/j.desal.2013.06.024.
 A. E. Keith and J. J. French, “Design and Testing of a Remote Deployable Water Purification System Powered by Solar Energy,” Adv. technol. innov., vol. 4, no. 1, Jan. 2019, Accessed: Feb. 08, 2020. [Online]. Available: http://ojs.imeti.org/index.php/AITI/article/view/1011.
 Mulyanef, Duskiardi, K. Sopian, Kaidir, and Z. Rahman, “Performance Experimental Study of Solar Still With Reflector To Produce Fresh Water and Salt,” MATEC Web Conf., vol. 248, 2018, doi: 10.1051/matecconf/201824801004.
 S. Manju and N. Sagar, “Renewable energy integrated desalination: A sustainable solution to overcome future fresh-water scarcity in India,” Renewable and Sustainable Energy Reviews, vol. 73, pp. 594–609, Jun. 2017, doi: 10.1016/j.rser.2017.01.164.
 A. I. Wibowo and K.-C. Chang, “Provision of Clean Water in Remote Village / Islet through Solar Energy Application: Case of Indonesia,” in 2019 IEEE 3rd International Conference on Green Energy and Applications (ICGEA), Taiyuan, Mar. 2019, pp. 193–198, doi: 10.1109/ICGEA.2019.8880790.
 H. Aburideh, A. Deliou, B. Abbad, F. Alaoui, D. Tassalit, and Z. Tigrine, “An Experimental Study of a Solar Still: Application on the sea water desalination of Fouka,” Procedia Engineering, vol. 33, pp. 475–484, Jan. 2012, doi: 10.1016/j.proeng.2012.01.1227.
 Kascade, “Solar Water Distillation,” 2019. http://kascade.nl/solar-water/ (accessed Sep. 20, 2019).
 H. Müller-Holst, M. Engelhardt, and W. Schölkopf, “Small-scale thermal seawater desalination simulation and optimization of system design,” Desalination, vol. 122, no. 2, pp. 255–262, Jul. 1999, doi: 10.1016/S0011-9164(99)00046-6.
 Photon Energy System Limited, “Solar Desalination,” 2019. Retreived from https://photonsolar.in/solar-desalination.php (accessed Aug. 08, 2019).
 H. Müller-Holst and R. Gleich, “Solar Thermal desalination for decentralized production of pure drinking water - A technological overview,” presented at the Intersolar US, Jul. 14, 2010, Accessed: Dec. 20, 2018. [Online]. Available: https://www.solarthermalworld.org/sites/gstec/files/MAGE_WaMa_Intersolar_2010.pdf.
 G. Yuan, Z. Wang, H. Li, and X. Li, “Experimental study of a solar desalination system based on humidification–dehumidification process,” Desalination, vol. 277, no. 1, pp. 92–98, Aug. 2011, doi: 10.1016/j.desal.2011.04.002.
 M. Shatat and S. B. Riffat, “Water desalination technologies utilizing conventional and renewable energy sources,” International Journal of Low-Carbon Technologies, vol. 9, no. 1, pp. 1–19, Apr. 2012, doi: 10.1093/ijlct/cts025.
 M. Yari, A. E. Mazareh, and A. S. Mehr, “A novel cogeneration system for sustainable water and power production by integration of a solar still and PV module,” Desalination, vol. 398, pp. 1–11, Nov. 2016, doi: 10.1016/j.desal.2016.07.004.
 G. N. Tiwari and L. Sahota, “Review on the energy and economic efficiencies of passive and active solar distillation systems,” Desalination, vol. 401, pp. 151–179, Jan. 2017, doi: 10.1016/j.desal.2016.08.023.
 P. Palenzuela, A. S. Hassan, G. Zaragoza, and D.-C. Alarcón-Padilla, “Steady state model for multi-effect distillation case study: Plataforma Solar de Almería MED pilot plant,” Desalination, vol. 337, pp. 31–42, Mar. 2014, doi: 10.1016/j.desal.2013.12.029.
 S. Kayaga, “Emergency treatment of drinking water at point-of-use,” WHO, Geneva, WHO Technical Notes for Emergencies Technical Note No. 5, 2011. [Online]. Available: https://www.who.int/water_sanitation_health/hygiene/envsan/treatmdrwat.pdf.
 F. Brikké and M. Bredero, “Linking technology choice with operation and maintenance in the context of community water supply and sanitation,” in Linking technology choice with operation and maintenance in the context of community water supply and sanitation, Geneva: WHO, 2003, pp. 71–102.
 C. E. Stauber, M. A. Elliott, F. Koksal, G. M. Ortiz, F. A. DiGiano, and M. D. Sobsey, “Characterisation of the biosand filter for E. coli reductions from household drinking water under controlled laboratory and field use conditions,” Water Science and Technology, vol. 54, no. 3, pp. 1–7, Aug. 2006, doi: 10.2166/wst.2006.440.
 Z. Tabatabaei, A. Mahvi, R. Saeedi, A. Khorshidi, and A. Ali, “Two-stage sand filtration of secondary effluent for agricultural reuse,” INTERNATIONAL JOURNAL OF AGRICULTURE & BIOLOGY, vol. 8530, pp. 9–6, Jan. 1560.
 A. Gottinger, D. Mcmartin, D. Price, and B. Hanson, “The Effectiveness of Slow Sand Filters to Treat Canadian Rural Prairie Water,” Canadian Journal of Civil Engineering, vol. 38, pp. 455–463, Apr. 2011, doi: 10.1139/l11-018.
 Sustainable Sanitation and Water Management Toolbox, “Slow Sand Filtration - Find tools for sustainable sanitation and water management.” https://sswm.info/sswm-university-course/module-6-disaster-situations-planning-and-preparedness/further-resources-0/slow-sand-filtration (accessed Apr. 17, 2020).
 D. Zhao, S. Deng, Y. Shao, L. Zhao, P. Lu, and W. Su, “A new energy analysis model of seawater desalination based on thermodynamics,” Energy Procedia, vol. 158, pp. 5472–5478, Feb. 2019, doi: 10.1016/j.egypro.2019.01.599.
 S. Ihm and S. Woo, “Comparative study on the methods of calculating theoretical minimum energy requirement for desalination,” dwt, vol. 90, pp. 32–45, 2017, doi: 10.5004/dwt.2017.21018.
 Y. D. Ahdab, G. P. Thiel, J. K. Böhlke, J. Stanton, and J. H. Lienhard, “Minimum energy requirements for desalination of brackish groundwater in the United States with comparison to international datasets,” Water Research, vol. 141, pp. 387–404, Sep. 2018, doi: 10.1016/j.watres.2018.04.015.
 BPS-Statistics Indonesia, Environment Statistic Indonesia 2018. Jakarta: BPS-Statistics Indonesia, 2018.
 Subagja, D. Muthmainnah, S. Saweestri, D. Atminarso, Makri, and A. Sudrajat, “Ecology, Biology and Fish Catchment Capacity in Ranau Lake South Sumatera Province,” Ministry of Maritime Affairs and Fisheries Republic of Indonesia, Palembang, Technical Report. [Online]. Available: https://bp3upalembang.kkp.go.id/assets/content_upload/files/Laptek%20WKO%202013.pdf.
 World Health Organization (WHO), “Desalination for safe water supply : Guidance for the health and environmental aspects applicable to desalination.” 2007, [Online]. Available: https://www.who.int/water_sanitation_health/gdwqrevision/desalination.pdf.
 World Health Organization (WHO), “Total dissolved solids in Drinking-water,” WHO, Geneva, WHO/SDE/WSH/03.04/16, 2003. Accessed: May 30, 2020. [Online]. Available: https://www.who.int/water_sanitation_health/dwq/chemicals/tds.pdf.
 US EPA, “Secondary Drinking Water Standards: Guidance for Nuisance Chemicals,” US EPA, Sep. 02, 2015. https://www.epa.gov/sdwa/secondary-drinking-water-standards-guidance-nuisance-chemicals (accessed Jun. 01, 2020).
 Ministry of Health Republic of Indonesia, Quality Requirements of Drinking Water. 2010.
 Ministry of Health Republic of Indonesia, Requirements Standards of Environmental Health and Water Health Quality for Hygiene Sanitation, Swimming Pool, Solus Per Aqua, and General Bathing. 2017.
 Texas Groundwater Protection Committee, “Groundwater Classification.” https://www.tgpc.texas.gov/wp-content/themes/responsive/subcommittees/groundcommittes/GWClassSystem.pdf (accessed Jun. 07, 2020).
 USGS, “Saline Water and Salinity.” https://www.usgs.gov/special-topic/water-science-school/science/saline-water-and-salinity?qt-science_center_objects=0#qt-science_center_objects (accessed Jun. 07, 2020).
 A. Hoque, A. H. Abir, and K. Paul Shourov, “Solar still for saline water desalination for low-income coastal areas,” Appl Water Sci, vol. 9, no. 4, p. 104, May 2019, doi: 10.1007/s13201-019-0986-9.
 S. W. Sharshir, G. Peng, N. Yang, M. O. A. El-Samadony, and A. E. Kabeel, “A continuous desalination system using humidification – dehumidification and a solar still with an evacuated solar water heater,” Applied Thermal Engineering, vol. 104, pp. 734–742, Jul. 2016, doi: 10.1016/j.applthermaleng.2016.05.120.
 H. N. Panchal, M. I. Patel, B. Patel, and M. Doshi, “A comparative analysis of single slope solar still coupled with flat plate collector and passive solar,” p. 6, 2011.
 A. S. Nafey, M. Abdelkader, A. Abdelmotalip, and A. A. Mabrouk, “Parameters affecting solar still productivity,” Energy Conversion and Management, vol. 41, no. 16, pp. 1797–1809, Nov. 2000, doi: 10.1016/S0196-8904(99)00188-0.
 M. H. Hamed, A. E. Kabeel, Z. M. Omara, and S. W. Sharshir, “Mathematical and experimental investigation of a solar humidification–dehumidification desalination unit,” Desalination, vol. 358, pp. 9–17, Feb. 2015, doi: 10.1016/j.desal.2014.12.005.
 G. M. Ayoub, M. Al-Hindi, and L. Malaeb, “A solar still desalination system with enhanced productivity,” Desalination and Water Treatment, vol. 53, no. 12, pp. 3179–3186, Mar. 2015, doi: 10.1080/19443994.2014.933040.
 H. N. Panchal, M. I. Patel, B. Patel, and M. Doshi, “A Comparative Analysis of Single Slope Solar Still Coupled With Flat Plate Collector and Passive Solar,” IJRRAS, vol. 6, no. 2, pp. 111–116, 2011.
 Rekasurya, “Solar PV Panel Price,” Sep. 26, 2019.
 Tokopedia.com, “Indonesian Marketplace,” Tokopedia, 2019. https://www.tokopedia.com/search?st=product&q=water%20heater%20tenaga%20surya (accessed Feb. 11, 2020).
 Ecoplus, “Minisal 1000 System.” Accessed: Jul. 28, 2020. [Online]. Available: http://www.desalin.com/brochures/EP_Data_Sheet_MiniSAL_1000L_EN.pdf.
 BPS-Statistics Indonesia, Construction Cost Index Province and Regency/Municipality 2018. Jakarta: BPS-Statistics Indonesia, 2018.
 BPS-Statistics Aceh Singkil, Pulau Banyak District in Figures 2019. Boyolali: BPS-Statistics Aceh Singkil, 2019.
 BPS-Statistics Banggai Laut, Labobo District in Figures 2019. Banggai Laut: BPS-Statistics Banggai Laut, 2019.
 BPS-Statistics Belu, Raihat District in Figures 2018. Belu: BPS-Statistics Belu, 2018.
 BPS-Statistics Lampung Barat, Lumbok Seminung District in Figures 2019. Lampung Barat: BPS-Statistics Lampung Barat, 2019.
 BPS-Statistics Mamuju Tengah, Karossa District in Figures 2018. Mamuju Tengah: BPS-Statistics Mamuju Tengah, 2018.
 BPS-Statistics Sumbawa, Labuhan Badas District in Figures 2019. Sumbawa: BPS-Statistics Sumbawa, 2019.
 President Republic of Indonesia, Determination of Disadvantaged Areas. 2015.
 K. Palpandi and R. P. Raj, “Performance Test on Solar Still for Various TDS Water and Phase Change Materials,” International Journal of Innovative Research in Science,Engineering and Technology, vol. 4, no. 13, p. 11, 2015.
 A. I. Wibowo and K.-C. Chang, “Solar energy-based water treatment system applicable to the remote areas: Case of Indonesia,” Journal of Water, Sanitation and Hygiene for Development, vol. 10, no. 2, pp. 347–356, Jun. 2020, doi: 10.2166/washdev.2020.003.
 US Department of Energy, Office of Energy Efficiency & Renewable Energy, “Energy Service Companies.” https://www.energy.gov/eere/femp/energy-service-companies-0 (accessed Jul. 09, 2020).
 K.-C. Fan, K.-C. Chang, and K.-M. Chung, “The Impact of Water Quality on the Use of Solar Water Heaters in Remote Islands of Taiwan,” Water, vol. 8, no. 11, p. 530, Nov. 2016, doi: 10.3390/w8110530.