The Government of India (GoI) had a target to add a cumulative rooftop solar capacity of 40 GW by 2022 as part of the country’s Intended Nationally Determined Contributions (INDC). However, installations only made up about 30% of the target, even after the intended timeline. Within the rooftop solar sector, the household segment holds promise. However, it cannot realize its potential due to economic, regulatory, and structural reasons, including a lack of access to debt financing for households, which hinders progress. Existing solar debt financing products face challenges such as having limited financial performance records and requiring excessive collateral. Addressing these barriers is crucial for the residential rooftop sector’s growth. The proposed resolution involves a retail loan product that employs the subsidy allocated to the residential sector to guarantee the solar system loan. This loan product will address access to finance issues in the residential rooftop solar sector using the capital expenditure (CAPEX) model. Banks and Financial Institutions (FIs) will be more comfortable lending to household consumers as there is a guarantee (30% of asset value). Since the subsidy is given back to the customer after the full loan payment, the customers have a greater incentive to repay the loan. Besides, this solution will also help address the lengthy subsidy disbursal issue. The loan product presents a pioneering approach to tackling the financing obstacles in the residential rooftop solar market. It not only aims to offer crucial debt financing but also showcases the commercial feasibility of the residential rooftop sector. By aligning the financial solution with the customers’ requirements through favorable credit terms, this financing option encourages residential customers to transition to rooftop solar systems.

Retail loans, residential rooftop solar, subsidy guarantee

Bridge to India. (2016). Poor implementation of net-metering policies poses a major challenge for rooftop solar. https://bridgetoindia.com/poor-implementation-of-net-metering-policies-poses-a-major-challenge-for-rooftop-solar/

CEEW. (2021). How have India’s RE Policies Impacted its Wind and Solar Projects? https://www.ceew.in/cef/solutions-factory/publications/CEEW-CEF-How-have-India%E2%80%99s-RE-Policies-Impacted-its-Wind-and-Solar-Projects-03Dec21.pdf

CEEW. (2022). Roadblocks and Solutions to Financing EVs in India. CEF. https://www.ceew.in/cef/masterclass/explains/roadblocks-and-solutions-to-financing-evs-in-india

Dalal, R., Bansal, K. & Thapar, S. (2023). Grid parity of residential building rooftop solar PV in India. Strategic Planning for Energy and the Environment, 39(1–2), 19–40. https://doi.org/10.13052/spee1048-4236.39142

Dutt, D. (2020). Understanding the barriers to the diffusion of rooftop solar: A case study of Delhi (India). Energy Policy, 144, 111674. https://doi.org/10.1016/j.enpol.2020.111674

Farhan, S. A., Ismail, F. I., Kiwan, O., Shafiq, N., Zain-Ahmed, A., Husna, N. & Hamid, A. I. A. (2021). Effect of roof tile colour on heat conduction transfer, rooftop surface temperature and cooling load in modern residential buildings under the tropical climate of Malaysia. Sustainability, 13(9), 4665. https://doi.org/10.3390/su13094665

Galvan, E., Mandal, P. & Sang, Y. (2020). Networked microgrids with rooftop solar PV and battery energy storage to improve distribution grid resilience to natural disasters. International Journal of Electrical Power & Energy Systems, 123, 106239. https://doi.org/10.1016/j.ijepes.2020.106239

Garg, V. & Shah, K. (2020). The curious case of India's discoms: How renewable energy could reduce their financial distress. IEEFA. https://ieefa.org/wp-content/uploads/2020/08/The-Curious-Case-of-Indias-Discoms_August-2020.pdf

GIZ. (2024). Capex report. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH and Indo German Solar Energy Partnership. https://www.giz.de/en/downloads/giz2024-en-Capex-Report.pdf

Gulia, J., Thayillam, A., Sharma, P. & Garg, V. (2022). Indian residential rooftops: A vast trove of solar energy potential. IEEFAhttps://ieefa.org/resources/indian-residential-rooftops-vast-trove-solar-energy-potential

IEEFA & Research JMK. (2023). Indian residential rooftops: A vast trove of solar energy potential. JMK Research & Analytics. https://jmkresearch.com/indian-residential-rooftops-a-vast-trove-of-solar-energy-potential/

IRENA. (2023). Renewable power generation costs in 2022. International Renewable Energy Agency, Abu Dhabi. https://www.irena.org/Publications/2023/Aug/Renewable-Power-Generation-Costs-in-2022

Jasmin, S. & Mahesh, A. (2020). Market for household solar energy systems in India. Indian Journal of Environmental Protection, 40(4), 430–433. https://www.scopus.com/record/display.uri?eid=2-s2.0-85092943645&origin=inward&txGid=e3285ef06078403ed73aea995c0fb4c9

PIB. (2023). Roof top solar capacity installations growing at compound annual growth rate of around 46%: Union power and new & renewable energy minister. Ministry of New and Renewable Energy. https://pib.gov.in/PressReleasePage.aspx?PRID=1989806

Quraishi, K. S., Salmaahmed, D. & Maran, D. K. (2019). China’s growth in residential solar roof tops—A booster for India. Global Journal of Management and Business Research, 19(A13), 19–29. https://doi.org/10.34257/gjmbravol19is13pg19

Rathore, P. K. S., Chauhan, D. S. & Singh, R. P. (2019). Decentralized solar rooftop photovoltaic in India: On the path of sustainable energy security. Renewable Energy, 131, 297–307. https://doi.org/10.1016/j.renene.2018.07.049

RETA. (2016). Grid parity of solar PV rooftop systems for the commercial and industrial sectors. The Energy and Resources Institute. Retrieved June 25, 2023. https://solarrooftop.gov.in/notification/Notification-08112016903.pdf

Sarangi, G. K. & Taghizadeh-Hesary, F. (2021). Rooftop solar development in India: Measuring policies and mapping business models (ADBI Working Paper Series No. 1256). Asian Development Bank Institute (ADBI), Tokyo.

Singh, A. B. & Deshmukh, M. (2019). Enhancement of performance of roof-mounted SPV system. Energy Procedia, 156, 105–109. https://doi.org/10.1016/j.egypro.2018.11.107

Statista. (2023). Total installed solar rooftop capacity in India as of June 2023, by sector. https://www.statista.com/statistics/500654/solar-rooftop-capacity-installed-in-india-by-sector/`

Thakur, J. & Chakraborty, B. (2015). A study of feasible smart tariff alternatives for smart grid integrated solar panels in India. Energy, 93, 963–975. https://doi.org/10.1016/j.energy.2015.09.100

UNFCCC. (2022). India’s updated first nationally determined contribution under Paris agreement (2021-2030). August 2022 submission to UNFCCC. https://unfccc.int/sites/default/files/NDC/2022-08/India%20Updated%20First%20Nationally%20Determined%20Contrib.pdf