Key Takeaways
- 1Global green bond issuance reached $620B in 2025 (+28% YoY)
- 2Asia-Pacific contributed 38% of new issuance, up from 29%
- 3Greenium narrowed to 2-5 bps for investment-grade issuers
- 4Total labelled bond market exceeded $940B in 2025
Global Issuance Trends
Global green bond issuance reached $620 billion in 2025, representing a 28% increase from the prior year. When combined with social bonds ($145B), sustainability bonds ($98B), and sustainability-linked bonds ($78B), the total labelled bond market exceeded $940 billion.
MindEarth projects green bond issuance alone will cross $1 trillion annually by 2028, driven by sovereign issuers, multilateral development banks, and corporate refinancing of conventional debt with green instruments.
“The total labelled bond market exceeded $940 billion in 2025 — on track to cross $1.5 trillion by 2028.”
Asia-Pacific Leadership
The Asia-Pacific region contributed 38% of new green bond issuance in 2025, up from 29% in 2023. China's sovereign green bond program issued $85 billion across multiple tranches, while India's sovereign green bonds totalled $12 billion following the successful inaugural issuance in 2023.
Japan, South Korea, and Australia have each established national green bond frameworks aligned with ICMA Green Bond Principles, creating a harmonised regional ecosystem for sustainable debt instruments.
Use of Proceeds & Impact Reporting
Renewable energy (34%) and green buildings (22%) remain the dominant use-of-proceeds categories. However, emerging categories including biodiversity conservation, circular economy, and climate adaptation are growing rapidly, collectively representing 18% of 2025 issuance compared to 9% in 2023.
Impact reporting quality has improved significantly, with 82% of green bond issuers now publishing annual impact reports aligned with ICMA Harmonised Framework for Impact Reporting.
Investment Implications
The green bond market offers institutional investors a liquid, scalable avenue for ESG-aligned fixed income allocation with minimal yield concession. The average greenium (yield discount for green bonds versus conventional equivalents) has narrowed to 2-5 basis points across investment-grade issuers.
MindEarth recommends investors focus on sovereign and quasi-sovereign issuers in emerging markets, where greeniums remain wider (8-15 bps) and the ESG impact per dollar invested is demonstrably higher.
