Debt Finance Key to India’s 500 GW Renewable Energy Target by 2030: IEEFA Report

Achieving India’s renewable energy targets—500 GW by 2030 and 60% non-fossil fuel in the energy mix by 2035 under the revised Nationally Determined Contributions (NDC)—will depend as much on debt finance as on technology or policy, according to a new report by the Institute for Energy Economics and Financial Analysis (IEEFA).

The report, “Financing the Energy Transition: A Credit Perspective on India’s Power Sector”, analyzes financial indicators for eight major power generators—Adani Green Energy Limited, Adani Power, JSW Energy, ReNew Power, NLC India, NTPC, SJVN, and Tata Power—which together represent roughly one-third of India’s installed capacity. Annual investments in renewable energy, storage, and transmission are projected to rise from approximately USD 68 billion (INR 6.18 trillion) by 2032 to USD 145 billion (INR 13.19 trillion) by 2035.

According to the report, long-term amortizing debt is the most efficient form of financing for capital-intensive renewable projects. Kevin Leung, Sustainable Finance Analyst at IEEFA Europe, said, “The power sector is already among the largest borrowers in India’s domestic debt markets. Transition planning is fundamentally a question of debt market planning—the availability, tenor, and cost of debt will determine the pace of capacity addition.”

The report notes a growing credit divergence between renewable and thermal assets. Renewable-focused utilities benefit from stronger margins due to zero fuel costs, broader access to international financing, and higher interest from global institutional investors. In contrast, thermal-linked credits face increasingly restricted access to international capital markets. Tata Power’s 2021 offshore bond repayment marked a de facto exit of thermal assets from USD-denominated markets.

IEEFA analysts highlighted that not all utilities will face transition risks equally. Financially constrained private players face limited balance sheet flexibility and reduced access to capital, while state-owned enterprises like NTPC and SJVN benefit from implicit government backing, providing refinancing flexibility.

The report also emphasizes the importance of building a domestically anchored funding base. Despite corporate bond market issuances exceeding USD 500 billion (INR 47 lakh crore) in 2025, the sector remains shallow, with utilities relying on loans for nearly 80% of their debt. Strengthening domestic institutional investment from pension funds, insurers, and provident funds could reduce exposure to volatile international capital flows.

NTPC, India’s largest integrated power utility, is identified as a critical enabler of transition finance, with a 51.1% government stake and an INR 7 trillion (USD 80 billion) capex plan through FY2032. Saurabh Trivedi, Lead Specialist, Sustainable Finance & Carbon Markets at IEEFA South Asia, said, “If NTPC can demonstrate a credible transition to a clean energy company, it would catalyze broader capital flows and support a coherent transition finance agenda.”

The IEEFA report concludes that scaling renewable capacity can not only accelerate India’s energy transition but also deepen domestic debt markets, mitigate climate-related systemic risks, and support sustainable economic growth.