Concept and Structure
Green bonds are debt instruments whose proceeds are earmarked exclusively for projects that generate identifiable environmental or climate benefits.
Like conventional bonds, they involve borrowing from investors and repayment of principal with interest. The distinguishing feature is the use-of-proceeds commitment.
Typical eligible sectors include:
- renewable energy;
- clean transport;
- energy efficiency;
- pollution prevention and control;
- sustainable water and waste management;
- green buildings;
- climate adaptation and ecosystem restoration.
Green bonds may be issued by governments, municipalities, multilateral institutions, banks or private companies.
Standards and India’s Framework
Credible green-bond markets depend on four elements:
- clear definition of eligible green projects;
- transparent project-selection criteria;
- separate tracking of proceeds;
- periodic reporting on allocation and environmental impact.
Internationally, the ICMA Green Bond Principles are widely used as voluntary market standards.
In India:
- SEBI regulates listed green debt securities and prescribes disclosure requirements;
- the Government of India has issued Sovereign Green Bonds (SGrBs) under its sovereign green-bond framework;
- proceeds from SGrBs are allocated to eligible public-sector green expenditure, while sectors such as fossil-fuel-related activities and nuclear power are excluded from the sovereign framework.
Sovereign Green Bonds also help create a benchmark yield curve for other Indian green issuers and can deepen the domestic sustainable-finance market.
Significance and Key Risks
Green bonds can:
- mobilise long-term capital for the low-carbon transition;
- diversify funding sources for infrastructure;
- attract ESG-oriented domestic and foreign investors;
- improve transparency around environmental expenditure;
- potentially lower financing costs where investor demand is strong.
However, issuing a green bond does not automatically make a project environmentally sound. Major concerns include:
- greenwashing;
- vague or inconsistent definitions of “green”;
- weak post-issuance reporting;
- difficulty in measuring actual emission reductions;
- fragmentation across competing green taxonomies.
A strong green-bond market therefore requires credible taxonomy, disclosure, external review and impact reporting.
Green bonds are best understood as a capital-market instrument for directing debt finance towards environmentally sustainable investment, rather than as a separate form of climate police by themselves.
