This study examines the interplay between green energy, green finance, and digitalization in fostering environmental sustainability across a panel of emerging economies from 2000 to 2024. Utilizing advanced panel econometric techniques, including Cross-Sectional Augmented IPS (CIPS) and CADF unit root tests, Pedroni and Westerlund cointegration methods, and a CS-ARDL model, the analysis reveals that renewable energy adoption, green financial mechanisms, and digital transformation significantly mitigate CO₂ emissions in both the short and long term. Conversely, GDP per capita demonstrates a positive correlation with emissions, underscoring the ecological trade-offs of economic growth. Trade openness exhibits a modest negative link with CO₂ emissions, implying that its environmental effects may vary based on trade structure and policy frameworks. Robustness checks via FMOLS and DOLS estimators validate the reliability of these results, while the Dumitrescu–Hurlin Granger causality test confirms unidirectional causality from renewable energy, green finance, and digitalization to emissions reduction. The findings emphasize the critical need for holistic policy strategies that simultaneously scale up renewable energy infrastructure, strengthen green financing instruments, and promote digital innovation to drive sustainable decarbonization. Additionally, sector-specific regulations, public-private partnerships, and international cooperation are vital to maximizing synergies among these drivers. By offering empirical evidence across multiple emerging economies, this study enriches the discourse on low-carbon transitions and provides actionable insights for policymakers seeking to balance economic development with ecological preservation. 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Aslam et al. (Mon,) studied this question.