<p>The high upfront costs of renewable energy continue to be a major hurdle for its widespread adoption, making financing a key factor in its growth. While the role of financing in the renewable energy sector has become more important, the complex relationships between economic development, financing mechanisms, and emissions are still not fully understood. Additionally, the effect of these dynamics on greenhouse gas (GHG) emissions and economic performance, particularly in Indonesia, remains underexplored. From 1980 to 2022, Indonesia experienced significant changes in renewable energy financing and GHG emissions, with a notable increase in financing alongside growing emissions. During this time, the country’s economic complexity also evolved, reflecting changes in its industries. This study fills that gap by using the Quantile Autoregressive Distributed Lag (QARDL) model and Quantile-on-Quantile Granger Causality analysis to better understand these relationships. The results show that the connection between renewable energy financing, GHG emissions, and foreign direct investments depends on the specific economic context, challenging previous studies that focused only on average data. In all cases, renewable energy financing positively influenced reducing emissions and boosting financial development. These findings suggest that the Indonesian government should strengthen its environmental policies, manage economic complexity where needed, and continue supporting renewable energy adoption while promoting innovative financial technologies that can drive sustainable outcomes.</p>