Scaling up Rooftop Solar Power in India: The Potential of Solar Municipal Bonds

The report argues that India's 40 GW rooftop solar target by 2022 requires an estimated USD 39 billion in investment, but growth is hindered by high upfront costs and limited access to debt capital. It proposes a Solar Municipal Bond (SMB) model where municipal entities act as finance aggregators, issuing bonds to provide low-cost, long-term debt to private developers via capital lease arrangements. This model could reduce the levelized cost of electricity (LCOE) for rooftop solar by up to 12%. Case studies in Surat and New Delhi suggest that while the model is promising, significant barriers exist, including a lack of statutory mandates for municipalities to promote power generation and the need for high credit ratings to attract institutional investors.

• India's target of 40 GW of rooftop solar by 2022 requires an estimated investment of USD 39 billion (INR 3 trillion) excluding subsidies, or USD 31.8 billion (INR 2.07 trillion) including subsidies.
• The growth of rooftop solar in India is primarily obstructed by three barriers: high upfront capital expenditure, perceived performance risk, and limited access to debt capital.
• The proposed Solar Municipal Bond (SMB) model allows a municipal entity to act as a finance aggregator, potentially lowering rooftop solar costs by up to 12% by providing project developers access to debt capital markets.
• Municipalities are better positioned than private developers to raise debt because they typically have larger balance sheets and superior credit profiles; over half of the 94 rated municipalities are investment grade (BBB- or above), while most rooftop developers are below investment grade.
• The SMB model's transaction structure involves a municipality-owned master special purpose vehicle (SPV) or corporate municipal entity (CME) raising bonds and disbursing proceeds to developer-owned SPVs through capital lease arrangements.
• Case studies for Surat and New Delhi indicate that the SMB model could reduce the cost of rooftop solar by 11.5% compared to the base case, making it more competitive with existing tariffs.
• A critical implementation barrier is that municipal corporations currently have no statutory mandate to promote electricity generation under the 12th Schedule of the 74th Constitutional Amendment.
• Other significant barriers include the requirement for municipalities to provide a minimum equity contribution of 20% of project costs per SEBI regulations, and the need for bonds to achieve high credit ratings (AA or A+) to attract investors in India's shallow debt market.
• The SMB model is most suitable for non-residential consumers (commercial and industrial) due to lower off-taker risk compared to residential consumers.
• Domestic institutional investors in India have an untapped debt investment potential of USD 56 billion for renewable energy that could be mobilized through the SMB route.

APA

Trivedi, S., Ray, I., Vulturius, G., Goldar, A., Prakash, L. J., Paul, S., & Sagar, A. (2018). Scaling up Rooftop Solar Power in India: The Potential of Solar Municipal Bonds. Climate Policy Initiative. https://climatepolicyinitiative.org/wp-content/uploads/2018/02/Scaling-up-Rooftop-Solar-Power-in-India-The-Potential-of-Solar-Municipal-Bonds.pdf

Chicago

Trivedi, Saurabh, Indro Ray, Gregor Vulturius, Amrita Goldar, Labanya Jena Prakash, Sandeep Paul, and Aarsi Sagar. Scaling up Rooftop Solar Power in India: The Potential of Solar Municipal Bonds. Climate Policy Initiative, 2018. https://climatepolicyinitiative.org/wp-content/uploads/2018/02/Scaling-up-Rooftop-Solar-Power-in-India-The-Potential-of-Solar-Municipal-Bonds.pdf.

Wikipedia

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BibTeX

@techreport{trivedi2018scaling, author = {Trivedi, Saurabh and Ray, Indro and Vulturius, Gregor and Goldar, Amrita and Prakash, Labanya Jena and Paul, Sandeep and Sagar, Aarsi}, title = {{Scaling up Rooftop Solar Power in India: The Potential of Solar Municipal Bonds}}, institution = {Climate Policy Initiative}, year = {2018}, month = feb, url = {https://climatepolicyinitiative.org/wp-content/uploads/2018/02/Scaling-up-Rooftop-Solar-Power-in-India-The-Potential-of-Solar-Municipal-Bonds.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }