Reward Green Countries: Exploring the Case for ‘Pure Play’ Sovereign Green Bonds

Sovereign ‘use-of-proceeds’ green bonds and ‘sustainability-linked’ bonds based on key performance indicators emerged as pivotal debt instruments with the potential to facilitate a just climate transition on a global scale. Contributing to the evolving sustainable sovereign debt ecosystem, the Capstone team examined the conceptual and practical viability of a first-of-its-kind pure-play green sovereign bond (PPGSB) label. Built on the conceptual foundations of existing sustainable thematic bonds, PPGSBs were crafted to recognize and support developing ‘green’ countries through the global sovereign debt marketplace. The Capstone team researched the proof-of-concept for PPGSBs through key sections: the rationale behind and the definition of ‘pure-play green sovereign bonds,’ the selection criteria and conditions for issuance to qualify prospective issuers for the ‘pure-play green sovereign’ designation, and the recommendations for relevant stakeholders to foster the creation of PPGSBs. Moreover, the team developed a dynamic interactive data model that simulated the PPGSB certification process, serving as a practical tool to evaluate the feasibility of these bonds. This initiative enhanced the sustainable sovereign debt ecosystem, providing a robust framework to channel financial resources towards countries demonstrating significant environmental stewardship. The recommendations of the team guided multilateral development banks, policymakers, and investors in promoting the growth of this innovative financial instrument.