Green GDP (GGDP) has emerged as an alternative measure of economic health that accounts for resource consumption and environmental damage. Utilizing data from 160 countries regarding their green economy performance during 1970-2019, this study assessed the effectiveness of their green development using the K-Means algorithm. We find a positive correlation between economic development and green performance, with higher levels of economic development leading to more robust green performance (e.g., Australia). Conversely, countries with lower levels of economic development appear to incur greater environmental damage in pursuit of economic growth (as seen in Congo, Rep.). In addition, this study presents three policy suggestions to facilitate the green economic development of future countries to promote the mitigation of global climate change. The findings of this study offer valuable information for policymakers, investors, and other stakeholders seeking to promote sustainable economic development in the face of climate change.