Technical and economic feasibility analysis of 1kW Rooftop Solar Photovoltaic System for Mysuru, Karnataka, India

Year 2025, Volume: 11 Issue: 5, 1507 - 1519, 21.10.2025

Raghavendra Deva Das Rao Bommegowda Sadashive Gowda

Abstract

Rooftop solar photovoltaic (PV) systems have emerged as a key decentralized energy solution in response to rising electricity demand, climate change concerns, and the global shift toward low-carbon power generation. Despite favourable policies and falling technology costs, adoption in many regions remains suboptimal. This study investigates the techno-economic feasibility of 1 kW rooftop solar PV systems in Mysuru, Karnataka, India, an urban area with high solar potential, receiving an average Global Horizontal Irradiance (GHI) of approximately 5.5 kWh/m²/day across over 300 sunny days annually. A system configuration comprising monocrystalline or polycrystalline PV modules, a 1 kW inverter. The system is projected to generate 1,500–1,800 kWh annually, resulting in savings of up to ₹8,850 per year at the current residential tariff of ₹5.90/kWh. Installation costs range between ₹45,000 and ₹50,000, with government subsidies such as those under the PM Surya Ghar: Muft Bijli Yojana, potentially covering up to ₹78,000. The financial analysis indicates a payback period of 4–6 years and a return on investment of 15–20% over a 25-year operational lifespan, alongside annual carbon dioxide emission reductions of approximately 1 ton. While the system proves technically and economically viable, challenges persist, including upfront capital costs, limited public awareness, and spatial constraints. The study underscores the importance of policy support, public engagement, and community solar initiatives in scaling rooftop PV adoption and advancing India’s renewable energy transition

Keywords

Carbon Dioxide Output , Economic Analysis , Financial Feasibility , Return on Investment , Rooftop Solar Photovoltaic (PV) Systems , Solar Irradiation

References

• REFERENCES
• [1] Windarta J, Saptadi S, Denis, Satrio DA, Silaen JS. Economic feasibility analysis of rooftop solar power plant design with household-scale on-grid system in Semarang city, E3S Web of Conferences, 2020;202:09002. [Crossref]
• [2] Ahsan S, Javed K, Rana AS, Zeeshan M. Design and cost analysis of 1 kW photovoltaic system based on actual performance in Indian scenario. Int J Eng Res Appl 2016;6:17-22. [Crossref]
• [3] Kumar A, Sudhakar K. Techno‑economic analysis of 1 MWp grid‑connected solar PV plant in India. Int J Ambient Energy 2016;37:1-6.
• [4] Sharma R, Goel S. Performance analysis of an 11.2 kWp rooftop grid‑connected PV system in Eastern India. Energy Reports 2017;3:76-84. [Crossref]
• [5] Chandel SS, Naik MN, Chandel R. Review of solar photovoltaic systems in India: Opportunities and challenges. Renew Sustain Energy Rev 2014;40:431-441.
• [6] Kumar NM, Sudhakar K, Samykano M. Techno‑economic analysis of 1 MWp grid‑connected solar PV plant in Malaysia. Int J Ambient Energy 2019;40:434-443. [Crossref]
• [7] Khatib T, Mohamed A, Sopian K, Mahmoud M. Assessment of grid‑connected photovoltaic systems in Malaysia. Int J Photoenergy 2012;2012:1-9. [Crossref]
• [8] Ali HM, Jangam A. Techno‑economic feasibility analysis of solar photovoltaic power generation: A review. Smart Science 2017;5:171-180.
• [9] Kumar A, Kumar K. Current status and future aspects of solar photovoltaic power generation in India. Int J Eng Res Technol 2015;4:717-721.
• [10] Sinha S, Schandel SS. Review of recent trends in optimization techniques for solar photovoltaic‑wind based hybrid energy systems. Renew Sustain Energy Rev 2015;50:755-769. [Crossref]
• [11] Kumar R, Sudhakar K. Performance evaluation of 10 MW grid‑connected solar photovoltaic power plant in India. Energy Reports 2015;1:184-192. [Crossref]
• [12] Shukla AK, Sudhakar K, Baredar P. Design, simulation, and economic analysis of standalone rooftop solar PV system in India. Solar Energy. 2016;136:437-449. [Crossref]
• [13] S. A. Kalogirou, "Solar thermal collectors and applications," Prog. Energy Combust. Sci., vol. 30, no. 3, pp. 231-295, 2004. [Crossref]
• [14] Singh P, Singh N. Comprehensive study of grid‑integrated solar photovoltaic systems. Renew Sustain Energy Rev 2016;54:1010-1023.
• [15] Kalogirou SA. Economic analysis of solar energy systems. Renew Sustain Energy Rev 2010;14:2843-2852.
• [16] Tiwari H, Pandey AK. Performance analysis of grid‑connected rooftop solar PV systems in India. Energy Sustain Dev 2018;43:130-138.
• [17] Kumar R, Sudhakar K. Techno‑economic analysis of a rooftop solar PV system: A case study of a hostel building. Energy Reports 2017;3:76-84.
• [18] Green MA. Solar cells: Operating principles, technology, and system applications. Englewood Cliffs, NJ: Prentice‑Hall; 1982.
• [19] Parida B, Iniyan S, Goic R. A review of solar photovoltaic technologies. Renew Sustain Energy Rev 2011;15:1625-1636. [Crossref]
• [20] Akella AK, Saini RP, Sharma MP. Social, economic, and environmental impacts of renewable energy systems. Renew Energy 2009;34:390-396. [Crossref]
• [21] Sinha SS, Chandel SS. Review of software tools for hybrid renewable energy systems. Renew Sustain Energy Rev 2014;32:192-205. [Crossref]
• [22] Shukla AK, Sudhakar K, Baredar P. Renewable energy resources in South Asian countries: Challenges, policy and recommendations. Resource‑Efficient Technol 2017;3:342-346. [Crossref]
• [23] Ismail MS, Moghavvemi M, Mahlia TMI. Techno‑economic analysis of an optimized photovoltaic and diesel generator hybrid power system for remote houses in a tropical climate. Energy Convers Manag 2013;69:163-173. [Crossref]
• [24] Mekhilef S, Saidur R, Kamalisarvestani M. Effect of dust, humidity and air velocity on efficiency of photovoltaic cells. Renew Sustain Energy Rev 2012;16:2920-2925. [Crossref]
• [25] Green MA. Recent developments in photovoltaics. Solar Energy 2004;76:3-8. [Crossref]
• [26] Chaurey A, Kandpal TC. Assessment and evaluation of PV based decentralized rural electrification: An overview. Renew Sustain Energy Rev 2010;14:2266-2278. [Crossref]
• [27] Chandel SS, Nagaraju Naik M, Chandel R. Solar powered water pumping systems: A review. Solar Energy 2016;128:218-227
• [28] Abdallah SM. Techno‑economic feasibility of hybrid solar‑wind power generation in the Middle East region. Energy Convers Manag 2013;72:17-24.
• [29] Badran AHA. Optimization of solar‑wind hybrid system for remote areas: Case study. Renew Energy 2012;38:1561-1567.
• [30] Li RSL, Mahmud HAA, Al‑Lawati SSS. Hybrid wind and photovoltaic power systems for remote areas. Energy 2012;38:1144-1152
• [31] Hargreaves JL. Analysis of hybrid photovoltaic and wind energy systems. Renew Energy 2014;39:2651-2660.
• [32] Gupta GP, Sharma PK. Techno‑economic evaluation of hybrid renewable energy systems: A review. Renew Sustain Energy Rev 2016;60:1079-1091.
• [33] Ali HM, Jangam A. Use of phase change materials for enhancing the efficiency of photovoltaic systems. J Renew Sustain Energy 2014;6:1-14.
• [34] Sohel MMTP, Islam MMS. Integration of photovoltaic‑thermal systems: Design and economic analysis. Energy Procedia 2014;61:89-92.
• [35] Al‑Qaraghuli MA, Siddiqui MSAH, Shamsher ST. Techno‑economic analysis of hybrid renewable energy systems for off‑grid communities. Energy 2013;63:282-294.
• [36] Ali MZBH. Off‑grid hybrid solar photovoltaic‑wind power systems: A case study of a remote area. Energy 2015;83:1-11.
• [37] Beaudoin JMR. Techno‑economic feasibility of solar energy systems in a variety of applications. Renew Sustain Energy Rev 2011;15:2990-3002.
• [38] Jain NK. Economic and environmental feasibility of rooftop solar photovoltaic systems in India. Energy 2016;98:1001-1008.
• [39] Anitha DD, Kumar SR. Optimization and simulation of hybrid renewable energy systems. Int J Energy Environ Eng 2014;5:102-112.
• [40] Lee DK. Assessment and optimization of hybrid power systems for rural electrification. Renew Energy 2008;33:1375-1383.
• [41] Wang W, Zhang C, Li X, Zhang H. Performance evaluation of solar photovoltaic systems using machine learning techniques. Environ Res Commun 2024;6:025002.
• [42] Yadav A, Pathak Y. A review on optimization of hybrid renewable energy systems using machine learning algorithms. In: Sharma D, Bhardwaj A, Singhal PK, editors. Proc Int Conf Smart Syst Adv Comput 2024:381-393.
• [43] Ahmad A, Nazir R, Shah SMA. Comparative analysis of rooftop PV systems under different climatic conditions using PVsyst. ISWA J 2024;15:200389.
• [44] Ünal Y, Öztürk HH. Energy and exergy analysis of a solar‑assisted heat pump system for greenhouse heating. J Therm Eng 2024;10:1297575.