Green bonds sit in an interesting corner of the bond market. On the surface, they look like regular bonds: an issuer borrows money, pays interest, and returns the principal at maturity. The difference lies in what the money is meant for.
In a green bond, the proceeds are earmarked for projects with environmental objectives such as renewable energy, clean transport, energy efficiency, pollution control, or climate adaptation. While they function much like conventional bonds in terms of risk and returns, their ‘green’ label is typically supported by frameworks or disclosures that guide how the funds are used.
In India, that idea has moved from a niche concept to a more visible policy focus, with sovereign issuances, municipal examples, and fresh bank-led activity adding depth to the space.
What are green bonds?
Green bonds are debt securities issued to raise money for climate-related or environmental projects. While their structure is similar to conventional bonds, the key difference lies in how the funds are used—the proceeds are earmarked for eligible green activities such as renewable energy, clean transport, energy efficiency, or pollution control. Issuers are also typically expected to disclose and track how these funds are deployed. For a retail investor, a simple way to understand this is that a green bond not only identifies the borrower but also the environmental purpose for which the funds are raised.
Why green bonds matter?
Green projects often need long-term capital. Renewable power, metro systems, cleaner buildings, and water or waste infrastructure are not small-ticket efforts. Green bonds create a route through which governments, companies, and civic bodies can raise money in a format already familiar to bond investors. In India’s case, the sovereign programme was framed to fund public-sector green infrastructure and to reduce the carbon intensity of the economy.
They matter for another reason too — transparency and disclosure. SEBI’s framework around green debt securities places emphasis on definitions, the end use of funds, and reporting, which helps reduce the risk of vague sustainability claims.
History of green bonds
The early global history usually begins with development-bank issuances. While some references discuss later sovereign issuances, the broader concept is generally traced back to the European Investment Bank in 2007 and the World Bank in 2008, which helped shape the market’s early direction.
In India, the first-ever green infrastructure bonds were issued in 2015. That arc shows how a concept that began in development finance gradually moved into sovereign borrowing, municipal funding, and mainstream corporate debt.
How do green bonds work?
The mechanics of green bonds are broadly similar to those of regular corporate or government bonds. An issuer raises capital from investors, pays a coupon, and repays the principal at maturity.
What sets them apart is how the proceeds are used. Issuers are expected to identify eligible environmental projects, define how they are selected, and track and allocate funds accordingly. They also typically provide periodic disclosures on the use of proceeds and, where possible, the environmental impact.
In India, the sovereign green bond framework is built around four pillars: use of proceeds, project evaluation and selection, management of proceeds, and reporting. These elements are intended to bring structure and transparency to the process.
The core characteristics of a bond, however, remain unchanged. Yield, maturity, liquidity, and credit risk continue to matter, and the “green” label does not eliminate sensitivity to interest rate movements or risks related to liquidity and credit quality.
Types of green bonds
Green bonds do not follow a single structure and may be issued in different forms depending on the issuer, funding needs, and underlying projects:
Sovereign green bonds
These are issued by governments to fund public-sector green infrastructure such as renewable energy, clean transport, or climate adaptation projects. In India, the sovereign green bond programme reflects this approach, with proceeds allocated in line with a defined framework and policy objectives.
Corporate green bonds
These are issued by companies to finance or refinance eligible environmental projects, often in sectors such as renewable energy or energy efficiency. The credit risk and return profile typically depend on the issuing company rather than the “green” label itself.
Municipal green bonds
These are issued by urban local bodies to fund civic infrastructure such as water treatment, waste management, or clean energy systems. In India, cities such as Ghaziabad and Indore have used this route to raise capital for specific environmental projects.
Financial institution issuances
Banks and financial institutions may issue green bonds to fund or support lending towards eligible green sectors. Recent bank-led issuances in India indicate growing institutional participation and may contribute to deeper market development.
Who issues green bonds?
Governments, municipalities, banks, NBFCs, REITs, and corporations can issue green bonds. In India, the sovereign route is handled through the RBI on behalf of the government, while listed green debt securities for other issuers fall under SEBI’s disclosure framework. Recent Indian examples include municipal bodies, renewable-focused companies, and banks, reflecting participation across both public and private sector issuers.
Where is the money used?
The proceeds are meant for eligible green projects. India’s sovereign framework lists areas such as solar, wind, biomass, and hydro energy, urban mass transportation, green buildings, pollution prevention and control, climate adaptation, and biodiversity-linked outcomes. It also excludes certain uses such as fossil fuels, nuclear power generation, and direct waste incineration.
So, the label is not merely symbolic. The money is typically expected to be linked to a disclosed environmental purpose, with issuers required to report on the allocation of proceeds and, where possible, the associated environmental impact. Proceeds may be used to finance new projects or refinance existing eligible green assets.
Green bonds vs traditional bonds
Understanding how green bonds differ from traditional bonds can help investors evaluate both environmental intent and core investment characteristics more clearly:
| Parameter | Green Bonds | Traditional Bonds |
| Use of funds | Proceeds are earmarked for eligible environmental projects | Proceeds may be used for general corporate or government purposes |
| Disclosure & reporting | Typically require ongoing disclosure on allocation and, where possible, impact | No specific requirement linked to environmental reporting |
| Structure | Similar in terms of coupon, tenor, and repayment | Standard bond structure with coupon, tenor, and repayment |
| Investment focus | Includes an environmental filter alongside financial considerations | Focuses primarily on financial and credit considerations |
| Credit analysis | Credit risk, issuer quality, and market factors remain relevant | Credit risk, issuer quality, and market factors are central |
| Key evaluation factors | Yield, maturity, liquidity, credit quality, tax treatment, and market conditions | Yield, maturity, liquidity, credit quality, tax treatment, and market conditions |
Advantages and disadvantages of green bonds
A comparison of the advantages and disadvantages of green bonds can help investors assess both their environmental relevance and practical investment considerations:
| Aspect | Advantages of Green Bonds | Disadvantages of Green Bonds |
| Use of capital | Channel funds toward clearly identified environmental projects | Funds are restricted to eligible uses, which may limit flexibility for issuers |
| Transparency | Come with added disclosure expectations on use of proceeds | Disclosure quality may vary across issuances |
| Market development | Widen the pool of capital available for climate-linked infrastructure | Liquidity may vary, especially outside actively traded sovereign issuances |
| Pricing dynamics | May attract ESG-focused investors and broader participation | The “greenium” is not always consistent; expected pricing benefits may not materialise |
| Risk profile | Retain standard bond characteristics familiar to investors | Credit risk and interest-rate risk remain unchanged despite the “green” label |
Examples of green bonds
Green bonds can be linked to a range of projects where the underlying objective is to deliver measurable environmental outcomes. For instance, a public authority may issue a green bond to fund the expansion of an urban metro network aimed at reducing traffic congestion and lowering emissions over time. In such cases, the bond is backed by the issuer’s balance sheet, while the proceeds are directed towards clearly identified infrastructure.
In another example, a financial institution may raise funds through green bonds to support a portfolio of loans extended to renewable energy developers or energy-efficient housing projects. Here, the environmental impact is distributed across multiple assets, and investors rely on both the issuer’s credit profile and the reporting around how the funds are deployed.
How to invest in green bonds?
Access to green bonds depends on the type of issuer, platform availability, and the route through which investors participate:
Direct investment in bond issuances
Investors may participate directly in green bond issuances through primary offerings or the secondary market. Eligibility, minimum investment size, and availability depend on the specific issue and platform.
Investment through mutual funds
Investors may gain exposure indirectly through mutual funds that invest in debt instruments, including green bonds, corporate bonds, PSU bonds, or government securities. In this route, the Net Asset Value can move with interest rates, bond yields, and changes in portfolio quality.
Features such as callable structures, maturity profiles, and credit quality vary across issuances and are defined in the bond document. The “green” label does not change these characteristics, so reviewing the issue terms remains important.
Who should invest in green bonds?
Understanding where green bonds may fit can help investors align their debt exposure with both financial considerations and environmental preferences:
- Defined environmental focus: Green bonds may be suitable for investors who want debt exposure linked to a defined environmental-use framework.
- Interest rate awareness: They may suit investors who understand that bond returns and prices can move with interest rates and broader market conditions.
- Portfolio diversification: They may be relevant for investors looking to diversify beyond plain vanilla corporate bonds within a fixed-income allocation.
- Lower volatility preference: They may appeal to investors seeking an alternative to equity-style volatility while remaining within the debt segment.
Investment suitability depends on factors such as tenure, liquidity needs, and overall risk appetite.
Risks associated with green bonds
Understanding the risks associated with green bonds can help investors evaluate how they fit within a broader fixed-income portfolio:
- Bond prices can move when interest rates change, which may lead to capital gains or losses depending on the timing of entry and exit.
- Credit risk is particularly relevant for non-sovereign issuances, as the issuer’s financial health can affect timely interest payments and principal repayment.
- Liquidity may vary depending on trading depth and market activity, which can make it harder to buy or sell certain green bonds at the desired price.
- Issuers are expected to deploy proceeds into eligible projects and report usage, and any gaps in disclosure or delays in execution may affect transparency and investor confidence.
Conclusion
Green bonds are essentially bonds, but what changes is the purpose attached to the money and the disclosure built around that purpose. For India, sovereign issuances, municipal activity, and recent bank-led deals suggest that the market is gradually finding shape. For investors, the practical lens remains simple: understand the issuer, understand the project framework, and then judge the bond the way any debt instrument is judged.
FAQs
Is a green bond a good investment?
A green bond may suit an investor looking for debt exposure linked to environmental projects, but the decision still depends on issuer quality, maturity, liquidity, and bond yields. The green tag alone does not make the investment low-risk.
What is the difference between ESG and green bonds?
Green bonds finance environmental projects specifically. ESG is a broader lens that can include environmental, social, and governance factors across companies, funds, and debt structures. SEBI also regulates green debt separately from newer ESG debt categories such as social and sustainability-linked instruments.
What are the requirements for issuing a green bond?
In broad terms, the issuer needs clarity on use of proceeds, project evaluation and selection, management of proceeds, and reporting. In India, SEBI’s green debt framework also requires defined disclosures, and recent norms have strengthened the role of an independent third-party reviewer or certifier.
When was the first green bond issued?
Reports differ slightly depending on whether one refers to the earliest development-bank format or later institutional scaling. Approved-source reporting commonly places early green bond history around 2007 for the European Investment Bank and 2008 for the World Bank.
What is the RBI green bond?
The term generally refers to India’s sovereign green bond issuances, where the RBI acts as the debt manager and conducts the issuance on behalf of the Government of India. The proceeds are used to fund eligible public-sector projects under the sovereign green bond framework.
Who issued green bonds in India?
Green bonds in India have been issued by a mix of government entities, municipal bodies, financial institutions, and corporates. These issuances are reflected in SEBI’s listed green debt data and span both public and private sector participants.
Which city issued the first green bond in India?
Ghaziabad Municipal Corporation issued India’s first green municipal bond in 2021.
How many green bonds have been issued in India?
The count changes as new issues come to market. SEBI’s green debt statistics page provides details on cumulative listed green bond issuances, but line-item counting requires caution as some issuances are split across maturities and the broader dataset may also include related ESG categories.
Does India have green bonds?
Yes, India has an active green bond market that includes sovereign issuances, corporate bonds, municipal bonds, and bank-led issuances. The Government of India launched its sovereign green bond programme in 2023, and listed green debt securities are regulated under SEBI’s framework.
What is the interest rate of green bonds in India?
There is no single interest rate for green bonds in India, as yields depend on the issuer, credit quality, maturity, and prevailing market conditions. Sovereign green bonds have generally been issued at yields comparable to conventional government securities of similar tenure.
How to buy green bonds in India?
Investors may access green bonds through primary issuances, secondary market purchases on exchanges, or through platforms such as RBI Retail Direct for sovereign bonds. Indirect exposure is also possible through mutual funds that invest in debt instruments, including green bonds.
