The primary objective of this study is to examine the impact of green finance, fintech, and renewable energy on the eight mineral-rich countries, namely Russia, the United States, Saudi Arabia, Canada, Iran, China, Brazil, and Australia. In addition to that, the study has also examined the moderating role of renewable energy in the relationship between fintech, green finance, and CO2 emissions. The study is among the pioneers to investigate the issues related to fintech, green finance, renewable energy, and CO2 emissions in eight mineral-rich countries. The study used data from eight mineral-rich countries over a 30-year period, from 1990 to 2019. To achieve the research objectives, the study has employed a robust estimate, namely MMQR. The MMQR approach is a robust technique that determines the impact of green finance, fintech, and renewable energy across different quartiles. The results of the study highlight that an increase in green financial practices, fintech adoption, and the use of renewable energy help mineral-rich countries reduce CO2 emissions. The study's findings provide policymakers with guidelines for making informed decisions in selected economies. In addition to that, the results of the study demonstrate the importance of incorporating renewable energy into the energy mix. The study not only improves our understanding of the interconnections between these factors, but it also establishes a strong foundation for future research and policymaking. © 2024