This study examined the relationship between renewable energy, financial development and economic growth in BRICS and MINT nations. The data used for the study was obtained from the World Bank development indicators from 1990-2022. The data was analysed using panel regression analysis(Pooled OLS) and Fixed Effects as well as the Dumitrescu-Hullin (2012) test for causality the result of the analysis showed that broad money per GDP had a positive impact on economic growth in MINT countries while it had a negative impact on economic growth BRICS nations. Market capitalisation per GDP was found to have a positive and significant impact on economic growth in BRIC nations Renewable energy on the other hand had a negative impact on economic growth in MINT countries while it had a negative impact on economic growth in BRICS nations. Renewable energy also had a unidirectional causality relationship with economic growth.