Exploring the Global Green Bond Market: A Literature Review of Drivers, Challenges, and Technological Solutions

Green bonds have rapidly emerged as a critical financial tool for supporting environmentally sustainable projects, particularly in the fight against climate change. This literature review synthesizes current research on the drivers, challenges, and global trends shaping the growth of the green bond market. Drawing from a broad range of academic and industry studies, the review explores key factors influencing green bond issuance, such as national policy frameworks (e.g., the Paris Agreement), macroeconomic conditions, and technological innovations like blockchain. Furthermore, it identifies significant barriers to market expansion, including the lack of standardized definitions for "green" projects, transparency concerns, and the risk of greenwashing.Through a comparative analysis of global regions, this review highlights how green bond markets differ in emerging economies versus developed markets, focusing on the role of institutional quality, regulatory frameworks, and investor demand. Special attention is given to the impact of geopolitical and economic uncertainties, including oil price fluctuations and geopolitical risks, on green bond performance. The review also emphasizes the potential of technological advancements like blockchain to enhance transparency and mitigate issues of accountability in green bond issuance. By identifying these drivers and challenges, this literature review provides a comprehensive understanding of the green bond market's trajectory and offers insights for policymakers and investors seeking to optimize its role in achieving global sustainability goals. The findings point toward the need for clearer regulatory standards, greater transparency, and more resilient market structures to fully unlock the potential of green bonds in advancing sustainable finance.