Sovereign Transition: Unlocking the Investment Opportunity

The report outlines a framework for sovereign transition planning based on five pillars: robust targets, a whole-of-government approach, green public financial management (PFM), a diverse policy mix, and transparency. It argues that integrating climate considerations into core budgetary processes (green PFM) is essential for coordinating action across all government departments. To address fiscal constraints and debt overhang, the report suggests alternative financing mechanisms, including carving out transition spending from deficit limits, utilizing GSS+ and sustainability-linked bonds, leveraging national development banks and sovereign wealth funds, and employing central bank monetary tools such as green asset purchases and adjusted collateral frameworks.

• Credible sovereign transition planning requires five main elements: targets and commitments, a whole-of-government approach, green public financial management (PFM), the use of a full range of policy tools, and transparency.
• Nationally determined contributions (NDCs) are currently insufficient to meet Paris Agreement goals, with full implementation likely resulting in peak warming of 2.1-2.3°C.
• Green public financial management (PFM) allows climate action to be integrated into existing government planning, budgeting, and oversight, expanding responsibility beyond the Ministry of Environment to include the Ministry of Finance.
• Sovereigns face significant fiscal constraints and debt overhangs that limit transition investment; one proposed solution is to exempt high-priority climate spending from fiscal deficit rules.
• Green, social, sustainable, and sustainability-linked (GSS+) bonds are effective tools for financing transition, with 70 sovereigns issuing a combined USD733.1bn by the end of H1 2025.
• Sustainability-linked bonds (SLBs) allow sovereigns to anchor transition targets in long-term policy, as seen in Chile's 2022 issuance and Thailand's 2024 issuance.
• National development banks (NDBs) and sovereign wealth funds (SWFs) can be leveraged to crowd in private capital and provide long-term investment, though many SWFs currently lack net-zero targets.
• Central banks can support the transition through monetary policy tools, such as tilting asset purchases toward green assets, adjusting collateral haircuts to reflect climate risk, and providing preferential refinancing for green assets.
• The use of an internationally interoperable taxonomy is critical as a lynchpin for designing transition policies, guiding sectoral targets, and ensuring the eligibility of labelled sovereign bond issuance.
• Monetary financing, while restricted in advanced economies due to central bank independence, has been used in emerging markets like China to fund large-scale transition infrastructure.

APA

Burge, L., Van Coppenolle, M., Martini, M., & Creed, A. (2025). Sovereign Transition: Unlocking the Investment Opportunity. Climate Bonds Initiative. https://www.climatebonds.net/files/documents/publications/Climate-Bonds_Sovereign-Transition-Unlocking-Investment-Opportunities_22-Oct-2025.pdf

Chicago

Burge, Lily, Magali Van Coppenolle, Mireille Martini, and Anna Creed. Sovereign Transition: Unlocking the Investment Opportunity. Climate Bonds Initiative, 2025. https://www.climatebonds.net/files/documents/publications/Climate-Bonds_Sovereign-Transition-Unlocking-Investment-Opportunities_22-Oct-2025.pdf.

Wikipedia

{{cite report |last1=Burge |first1=Lily |last2=Van Coppenolle |first2=Magali |last3=Martini |first3=Mireille |last4=Creed |first4=Anna |title=Sovereign Transition: Unlocking the Investment Opportunity |publisher=Climate Bonds Initiative |date=October 2025 |url=https://www.climatebonds.net/files/documents/publications/Climate-Bonds_Sovereign-Transition-Unlocking-Investment-Opportunities_22-Oct-2025.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{burge2025sovereign, author = {Burge, Lily and Van Coppenolle, Magali and Martini, Mireille and Creed, Anna}, title = {{Sovereign Transition: Unlocking the Investment Opportunity}}, institution = {Climate Bonds Initiative}, year = {2025}, month = oct, url = {https://www.climatebonds.net/files/documents/publications/Climate-Bonds_Sovereign-Transition-Unlocking-Investment-Opportunities_22-Oct-2025.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }