Sustainable Finance: Why India’s Climate Finance Engine Is Still Running Below Capacity

Arun Kumar
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India does not suffer from a shortage of climate ambition. It suffers from a shortage of investable climate pipelines.

India’s climate transition is often described in grand numbers: net zero by 2070, rapid renewable energy expansion, green hydrogen, electric mobility, climate-resilient cities and a cleaner industrial base. But behind the ambition lies a hard financing reality. India requires roughly $170 billion annually to meet its climate commitments, yet tracked green finance flows were only around $44 billion per year in 2019-20 — barely a quarter of the estimated requirement.

That gap is not merely an environmental concern. It is an economic bottleneck. Climate finance will decide whether India’s growth story can remain energy-secure, export-competitive and investment-friendly in a world where capital is increasingly pricing carbon, resilience and sustainability.

This article follows the senior business-magazine articulation brief shared for GlobalBizNow.

India has made visible progress. The country’s tracked green finance reached an all-time high in 2021-22, and most mitigation finance remained domestically sourced, with domestic capital contributing 83% in 2021-22. The government has also raised the climate ambition curve: in March 2026, India approved its NDC for 2031-35, committing to reduce emissions intensity of GDP by 47% from 2005 levels by 2035 and achieve 60% cumulative electric power installed capacity from non-fossil fuel sources by 2035. India had already reached 52.57% non-fossil installed capacity by February 2026.

Yet the financing gap persists because climate finance in India is still concentrated, cautious and uneven. Renewable energy has attracted the bulk of investor confidence because it has clearer revenue models, better policy visibility and proven project structures. But the harder parts of the transition — adaptation, urban resilience, green buildings, industrial decarbonisation, MSME energy efficiency, water systems and climate-resilient agriculture — remain underfunded.

This is where the story becomes more complex. India’s climate finance problem is not simply that investors are unwilling. It is that many climate needs are not yet structured as bankable investment opportunities.

Adaptation is the clearest example. India is highly exposed to heatwaves, floods, water stress, coastal risks and agricultural volatility. But adaptation finance remains far weaker than mitigation finance. CPI’s earlier tracking found adaptation funding at about $5 billion per annum in 2019-20, largely funded by central and state government budgets. Unlike a solar park or a wind project, a flood-resilient drainage network, mangrove restoration programme or heat-action system does not always generate a predictable cash flow. The benefits are real, but the revenue model is often public, indirect and long-term.

That is why private capital remains more comfortable funding clean energy than climate resilience. Investors want revenue certainty. Banks want repayment visibility. Pension funds want stable long-term yields. But many climate projects in India sit in sectors where municipal finances are weak, state-level project preparation capacity is uneven, and regulatory risk is high.

The second reason is India’s high cost of capital. In developed markets, green projects often benefit from cheaper long-term finance. In India, even commercially viable projects face higher borrowing costs, currency risks for foreign investors and execution risks around land, transmission, permissions and counterparty payments. For renewable developers, delayed payments by power distribution companies have historically remained a concern. For newer sectors such as green hydrogen, battery storage and industrial decarbonisation, technology and demand risks add another layer of caution.

The third constraint is the absence, until recently, of a common language for sustainable finance. Investors need clarity on what qualifies as green, transition-aligned or climate-supportive. Without a credible taxonomy, the market faces two risks: genuine projects may struggle to attract capital, while weak projects may claim green credentials without delivering real climate value. India has now moved to address this through the Draft Framework of India’s Climate Finance Taxonomy, released by the Ministry of Finance in May 2025, which aims to facilitate greater resource flow to climate-friendly technologies and activities.

This is an important step. But a taxonomy alone will not unlock capital. It must be followed by sectoral thresholds, disclosure standards, incentives, blended finance structures and stronger project pipelines. Otherwise, it will remain a classification tool rather than a capital-mobilisation engine.

The fourth issue is scale. India’s sustainable debt market is growing, but from a relatively modest base compared with the size of the transition challenge. By the end of 2024, India had issued $55.9 billion in green, social, sustainability and sustainability-linked debt, while sovereign green bonds worth ₹477 billion helped create benchmarks for the market. This is progress, but it is still small beside a required annual climate investment need of about $170 billion.

The lesson is straightforward: India cannot fund its climate transition through government expenditure alone. Public money must increasingly be used as catalytic capital — absorbing first-loss risk, offering guarantees, supporting viability gap funding and helping crowd in institutional investors. Development finance institutions, sovereign green bonds, municipal green bonds, infrastructure investment trusts, credit enhancement mechanisms and blended finance platforms must become central to the strategy.

For India Inc., the climate finance gap is also a competitive warning. Exporters in steel, cement, textiles, chemicals and auto components will increasingly face sustainability-linked trade rules, carbon accounting demands and green supply-chain expectations. Companies that delay transition investments may find themselves paying a higher cost later — through lost market access, higher financing costs or weaker valuations.

The banking system also needs a mindset shift. Climate finance cannot remain a niche ESG desk activity. It must become mainstream credit strategy. Banks and NBFCs need better climate-risk assessment tools, sector-specific green lending products and financing models for MSMEs, which form the backbone of Indian manufacturing but often lack the balance sheet strength to invest in energy efficiency or cleaner technologies.

India’s sustainable finance challenge is therefore not about ambition; it is about architecture. The country has policy direction, market opportunity and developmental urgency. What it now needs is a deeper financial plumbing system: credible data, predictable regulation, risk-sharing institutions, investable municipal projects and a stronger bridge between climate priorities and commercial capital.

The big opportunity is that India can design a climate finance model suited to an emerging economy — one that does not copy Western ESG frameworks blindly, but balances growth, energy security, affordability and resilience. If done well, sustainable finance can become not just a climate tool, but a new industrial policy instrument.

The next decade will determine whether India’s green transition remains policy-led or becomes market-powered. The difference between $44 billion and $170 billion is not just a funding gap. It is the distance between climate intent and climate execution.

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