Design/methodology/approach: The research methods used in the paper include the survey of Polish and foreign literature as well as the analysis of data from secondary sources. Desk research analysis was based on numerical data contained in the Climate Bonds Initiative database. Findings: The result of the conducted research is an indication of trends concerning the development of the green bond market and the main leaders on the international market. The position of Poland as an issuer of this type of securities is presented against this background. Research limitations/implications: The presented findings encourage further research to systematize data on green finance in Poland and the issue of green bonds from the point of view of the adopted criteria for their division. Practical implications: The analysis and assessment of the causes and effects of the issue of green bonds, especially on international markets, should be a kind of leverage to popularize this method of financing pro-ecological projects in Poland, especially among entrepreneurs and local governments. Social implications: The use of the presented data, analyses and conclusions should imply further actions and strategies of various entities necessary to implement the concept of sustainable development, especially green financing. The implementation of green bonds should result in the development of the capital market on the one hand, and on the other hand, contribute to the effective implementation of pro-ecological projects. Originality/value: The article synthetically presents the significance of the concept of green finance. It deals with current issues related to green bonds as well as global and domestic trends in their application.