SOVEREIGN GREEN BONDS IN INDIA: GREENIUM, BENEFITS AND CHALLENGES

 Why In News?

India reduced long-term climate borrowing costs via a ₹50 billion, 30-year green bond issuance, gaining a stable four-basis-point greenium driven by strong institutional demand.

What Are Sovereign Green Bonds?

Sovereign Green Bonds (SGrBs) are debt instruments issued by a national government to borrow money from investors, with a legal commitment that the proceeds will be used exclusively to finance environmentally sustainable public projects.

Core Features & Mechanism

• They work like regular G-Secs, but their proceeds are ring-fenced for green initiatives like renewables, transit, and adaptation.

• Sovereign Guarantee: Backed by the central government, sovereign green bonds carry the domestic market's lowest default risk.

• The Greenium Benefit: Due to high demand from climate-focused investors, SGrBs often yield a Greenium (Green + Premium), enabling governments to issue bonds at lower interest rates and reduce public borrowing costs.

What Is Greenium?

Greenium (Green + Premium) refers to the pricing benefit or savings that an issuer of a green bond realizes because investors are willing to accept a lower yield (interest rate) or pay a higher price due to the bond's sustainable impact.  

Greenium = Conventional Bond Yield − Green Bond Yield, so a positive value means cheaper borrowing for the issuer.

Investor Pricing: Lower green-bond yields imply higher bond prices, reflecting additional investor demand for environmental assets.

Not Automatic: Greenium can be positive, zero or negative, depending on liquidity, issue size, market conditions and investor demand.

Indian Greenium: Economic Survey 2025-26 finds India's greenium intermittent at 0–6 bps, while the latest reported auction produced 7 bps.

Significance of Greenium 

• Lower Borrowing Cost: A positive greenium allows the government to raise climate finance at a slightly lower interest cost than comparable conventional borrowing.

• Climate Finance: Greenium creates a financial incentive to expand climate-oriented borrowing without relying entirely on concessional external finance.

• Investor Confidence: Persistent greenium indicates that investors place monetary value on credible environmental outcomes and transparent use of proceeds.

• Policy Credibility: SGrBs signal that climate commitments are being integrated into public expenditure and sovereign debt management.

• Market Development: Regular SGrB issuance can create a benchmark for corporate, municipal and financial-sector green bonds.

India’s Sovereign Green Bond Framework

India launched its Sovereign Green Bond Framework in 2022 under the Department of Economic Affairs, Ministry of Finance.

Core Pillars of the Framework

The framework aligns with the four core components of the International Capital Market Association (ICMA) Green Bond Principles: 

1. Use of Proceeds: Funds are raised exclusively to finance or refinance eligible green public sector expenditures, reducing the economy's carbon intensity.  

2. Project Evaluation & Selection: A dedicated institutional mechanism assesses projects to filter out ineligible sectors and prioritize high-impact climate activities.

3. Management of Proceeds: The Ministry of Finance tracks allocation to ensure funds are not mixed or diverted into general expenditure.  

4. Reporting: The government mandates annual reporting on allocation metrics and, where feasible, the quantified environmental impacts.  

Eligible vs Ineligible Projects  

The framework explicitly outlines nine broad categories of eligible public expenditures, while setting a strict "negative list" to avoid greenwashing.  

Eligible Categories  

• Renewable Energy: Solar, wind, biomass, and small hydro projects.

• Energy Efficiency: Smart grids, energy-efficient public buildings, and municipal street lighting.

• Clean Transportation: Metro rail, electric vehicle infrastructure, and rolling stock electrification.

• Climate Change Adaptation: Flood defense systems, early warning systems, and drought-resilient infrastructure.

• Sustainable Water & Waste Management: Sewage treatment plants, water recycling, and solid waste processing.

• Pollution Prevention & Control: Air quality monitoring, waste-to-energy (excluding direct incineration), and remediation of contaminated sites.

• Green Buildings: Construction of public buildings meeting certified green standards (e.g., GRIHA, IGBC).

• Terrestrial & Aquatic Biodiversity: Afforestation, mangrove restoration, and conservation of national parks. 

Ineligible Categories 

• Fossil Fuel projects (including any infrastructure supporting coal or oil extraction/power).

• Nuclear Power Generation.

• Direct Biomass extraction that threatens food security or biodiversity.

• Hydropower plants larger than 25 MW.

• All projects involving tobacco, alcohol, gambling, and weapons.  

Institutional & Governance Mechanism

To maintain credibility and prevent bureaucratic delays, India uses a multi-layered governance system:

• Green Finance Working Committee (GFWC):

• Chaired by the Chief Economic Adviser (CEA) to the Government of India.

• Comprises representatives from key ministries (New & Renewable Energy, Environment, NITI Aayog, etc.).

• Role: Evaluates and selects eligible projects submitted by line ministries each financial year.  

• Fund Flow Pipeline:

• Proceeds are credited directly to the Consolidated Fund of India (CFI).

• Line ministries receive allocations via the Union Budget process through a separate accounting head to ensure tracking.  

• Auditing & Oversight:

• The allocation and end-use of funds are subject to independent audit oversight by the Comptroller and Auditor General (CAG) of India.     

Source: THEHINDU