India's sustainable debt market has crossed $55.9 billion, driven by sovereign green bond issuances, SEBI's ESG debt securities framework, and growing corporate demand for green finance. Green bonds fund projects like renewable energy, clean transport, and energy efficiency - and they are now a critical tool for companies looking to align capital raising with climate commitments.
If your company is measuring emissions, setting science-based targets, or reporting under BRSR, the next logical question is: how do you finance the transition to a lower-carbon business? Green bonds and sustainable finance instruments are the answer - and India's market for them is expanding rapidly.
This guide covers what green bonds are, how India's market has grown, what SEBI's framework requires, and the practical steps companies can take to access green finance.
What Are Green Bonds?
Green bonds are fixed-income debt instruments where the proceeds are exclusively used to finance or refinance projects with clear environmental benefits. They work exactly like regular bonds - with a coupon rate, maturity date, and credit rating - but with one critical difference: the issuer commits to deploying funds only for eligible green projects and reporting on environmental impact.
The concept originated in 2007 when the European Investment Bank issued the first "climate awareness bond." Since then, the global green bond market has grown to over $2.5 trillion in cumulative issuance.
What makes green bonds different from regular bonds:
- Use of proceeds: Funds must go to eligible green projects - renewable energy, energy efficiency, clean transport, sustainable water management, pollution prevention, or green buildings
- Reporting obligation: Issuers must report annually on how proceeds are allocated and the environmental impact achieved
- External review: Most green bonds undergo independent verification or a second-party opinion to confirm alignment with recognized standards
- Pricing: Green bonds often achieve a "greenium" - a slightly lower yield than comparable conventional bonds - reflecting investor demand for sustainable instruments
For companies already tracking their Scope 1, 2, and 3 emissions, green bonds provide a structured way to raise capital specifically for decarbonization projects, while signaling climate commitment to investors and stakeholders.
India's Green Bond Market
India has emerged as one of the largest green bond markets in the developing world. According to the Climate Bonds Initiative, India's cumulative sustainable debt issuance has crossed $55.9 billion as of 2025 - spanning green bonds, social bonds, sustainability bonds, and sustainability-linked instruments.
Key milestones in India's green bond journey:
- 2015: Yes Bank issued India's first green bond (INR 1,000 crore) for renewable energy financing
- 2017: SEBI issued initial guidelines for green bond issuance and disclosure
- 2023: Government of India issued its first sovereign green bond - two tranches totaling INR 16,000 crore (approximately $2 billion), with proceeds allocated to solar energy, metro rail, and afforestation
- 2024: Second year of sovereign green bond issuance, with INR 20,000 crore raised, reinforcing India's commitment at the sovereign level
- 2025: SEBI's comprehensive ESG debt securities framework came into effect, standardizing the entire market
The sovereign green bond program has been particularly significant. It established a benchmark yield curve for green debt in India, making it easier for corporates and banks to price their own green bond issuances. The proceeds are tracked through a dedicated Green Finance Working Committee under the Ministry of Finance.
"India is one of the fastest-growing sustainable finance markets globally. The sovereign green bond issuances have catalyzed the broader market, providing a credible benchmark for corporate issuers." - Climate Bonds Initiative, India Country Report 2025
Globally, ESG assets under management have surpassed $30 trillion, and institutional investors are increasingly mandating ESG criteria in their portfolio allocation. For Indian companies, this means access to a deep pool of capital - but only if issuances meet recognized green bond standards.
SEBI's ESG Debt Securities Framework
In June 2025, SEBI issued a comprehensive framework for ESG debt securities - replacing its earlier 2017 guidelines with a more detailed and internationally aligned regulatory structure. The framework covers four categories of instruments and sets clear requirements for issuance, reporting, and verification.
Eligible issuers: Listed and unlisted entities, including corporates, banks, NBFCs, and municipal bodies
Use of proceeds: Must be allocated to eligible project categories defined by SEBI, aligned with ICMA (International Capital Market Association) principles
External review: Mandatory second-party opinion or certification from an accredited agency
Reporting: Annual allocation report and impact report for the life of the bond
Greenwashing safeguards: Clear penalties for misrepresentation of green credentials or misallocation of proceeds
The framework is aligned with the ICMA Green Bond Principles and the Climate Bonds Standard, making Indian ESG debt securities recognizable to international investors. This is a meaningful step - it means a green bond issued under SEBI's framework can attract both domestic and global capital.
Types of ESG Bonds
SEBI's framework recognizes four distinct categories of ESG debt securities. Understanding the differences is important for choosing the right instrument for your financing needs.
| Type | Use of Proceeds | Key Feature | Example |
|---|---|---|---|
| Green Bonds | Environmental projects only - renewable energy, energy efficiency, clean transport, green buildings | Proceeds ring-fenced for green projects | Solar farm financing, EV fleet transition |
| Social Bonds | Social projects - affordable housing, healthcare access, education, food security | Proceeds ring-fenced for social impact | Affordable housing development, rural healthcare |
| Sustainability Bonds | Combination of green and social projects | Proceeds split between environmental and social objectives | Smart city infrastructure with clean energy + affordable housing |
| Sustainability-Linked Bonds | General corporate purposes (no ring-fencing) | Coupon rate tied to achieving specific ESG targets (e.g., emissions reduction KPIs) | Bond with step-up coupon if company misses its 30% emissions reduction target by 2030 |
A key distinction: green, social, and sustainability bonds are use-of-proceeds instruments - the money must go to specific projects. Sustainability-linked bonds (SLBs) are different - the proceeds can be used for any purpose, but the financial terms (typically the coupon rate) are tied to whether the issuer achieves pre-defined sustainability performance targets (SPTs).
SLBs are particularly useful for companies that want to signal ESG commitment across their entire operations rather than funding a specific project. However, they require credible, measurable, and independently verified KPIs - such as reducing Scope 1 and 2 emissions by a set percentage or achieving a specific net-zero milestone.
Who Issues Green Bonds in India?
India's green bond market includes issuers across three main categories:
Government
The Government of India's sovereign green bond program (launched in 2023) has raised over INR 36,000 crore across multiple tranches. Proceeds fund national green infrastructure - solar parks, metro rail expansion, afforestation programs, and energy efficiency retrofits in government buildings. The Reserve Bank of India (RBI) manages the issuance process, with the Green Finance Working Committee overseeing allocation and impact reporting.
Banks and Financial Institutions
Indian banks have been among the most active green bond issuers. State Bank of India, Indian Renewable Energy Development Agency (IREDA), Power Finance Corporation, and REC Limited have all issued green bonds - both domestically and in international markets (particularly the London and Singapore exchanges). Bank-issued green bonds typically fund renewable energy project loans, transmission infrastructure, and energy efficiency financing.
Corporates
A growing number of Indian corporates are tapping the green bond market. Adani Green Energy, ReNew Energy Global, Greenko, JSW Energy, and Indian Railway Finance Corporation are notable issuers. Corporate green bonds fund specific capital expenditure - wind and solar capacity, battery storage, green hydrogen plants, and industrial decarbonization projects.
The trend is expanding beyond traditional energy companies. Manufacturing firms, real estate developers, and infrastructure companies are increasingly using green bonds to finance low-carbon transitions - particularly as SEBI's framework provides a clear regulatory pathway.
Green Bonds and ESG Reporting
Green bond issuance does not exist in isolation - it connects directly to a company's broader ESG reporting and disclosure ecosystem. For Indian companies, this means alignment across multiple frameworks:
- BRSR (Business Responsibility and Sustainability Report): SEBI-mandated ESG disclosure for the top 1,000 listed companies. Companies issuing green bonds should ensure their BRSR disclosures are consistent with their green bond impact reports - particularly on emissions data, energy consumption, and environmental expenditure.
- GRI (Global Reporting Initiative): Many green bond issuers use GRI standards for their sustainability reports. GRI disclosures on emissions (GRI 305), energy (GRI 302), and water (GRI 303) provide the underlying data that supports green bond impact reporting.
- CDP (Carbon Disclosure Project): CDP questionnaire responses demonstrate climate risk management and emissions reduction strategies - exactly the kind of credibility signal that green bond investors look for.
- ESG ratings: Strong ESG performance, evidenced through these reporting frameworks, can improve green bond pricing (achieving the "greenium") and attract a wider pool of sustainable finance investors.
The data infrastructure you build for GHG calculation and BRSR reporting is the same infrastructure that supports credible green bond issuance. Companies that invest in robust emissions measurement and reporting are better positioned to access green finance at favorable terms.
How Companies Can Access Green Finance
Whether you are looking to issue green bonds or invest in them, here is a practical roadmap:
1. Measure your emissions. Before accessing green finance, you need a clear baseline. Conduct a comprehensive GHG assessment covering Scope 1, 2, and 3 emissions. This data forms the foundation for identifying eligible green projects, setting reduction targets, and reporting impact. Without verified emissions data, no credible green bond issuance is possible.
2. Set science-based targets. Define measurable decarbonization targets aligned with climate science. Net-zero commitments backed by interim targets (e.g., 30% Scope 1+2 reduction by 2030) provide the credibility that investors and verifiers require. For sustainability-linked bonds, these targets become your SPTs - the KPIs that determine your coupon rate.
3. Verify and certify. Engage an independent verifier for a second-party opinion on your green bond framework, or pursue certification under the Climate Bonds Standard. SEBI's framework mandates external review - this is not optional. Verification covers eligibility of projects, alignment with ICMA principles, and adequacy of reporting commitments.
4. Issue or invest. Work with investment banks and legal advisors to structure the bond issuance under SEBI's ESG debt securities framework. For companies not ready to issue bonds themselves, investing in green bonds or green mutual funds is an alternative way to align treasury management with sustainability goals. Many Indian AMCs now offer ESG-focused debt funds.
For mid-size companies that may not have the scale for a standalone bond issuance, aggregation platforms and green loan programs from development finance institutions (like IREDA, SIDBI, or IFC) offer alternative pathways to green finance - often with concessional terms for verified green projects.
Frequently Asked Questions
Green bonds are fixed-income debt instruments where the proceeds are exclusively used to finance environmentally beneficial projects - such as renewable energy, energy efficiency, clean transport, or pollution prevention. They function like regular bonds (with a coupon rate, maturity date, and credit rating) but include a commitment that funds will only be deployed for eligible green projects, with ongoing reporting on environmental impact.
SEBI (Securities and Exchange Board of India) regulates green bonds and ESG debt securities in India. In June 2025, SEBI issued a comprehensive framework for ESG debt securities covering green bonds, social bonds, sustainability bonds, and sustainability-linked bonds. The Reserve Bank of India (RBI) also issues sovereign green bonds on behalf of the Government of India.
India's cumulative sustainable debt market has crossed $55.9 billion as of 2025, according to the Climate Bonds Initiative. This includes green bonds, social bonds, sustainability bonds, and sustainability-linked instruments issued by government entities, banks, and corporates. Globally, ESG assets under management have surpassed $30 trillion.
To issue green bonds in India, a company must measure and verify its emissions through a GHG assessment, define eligible green projects aligned with SEBI's framework, obtain an independent second-party opinion or certification (such as from the Climate Bonds Initiative), file with SEBI under the ESG debt securities framework, and commit to ongoing reporting on the use of proceeds and environmental impact metrics.
Ready to explore green finance for your business?
Our team helps companies measure emissions, build ESG reporting frameworks, and prepare for green bond issuance. Start with a GHG calculation to establish your baseline.
Get in touch