Sustainable development through green transition in EU countries: New evidence from panel quantile regression

Sustainable development addresses global challenges by promoting practices that balance economic, social, and environmental considerations. Key factors include the shifting to green energy and the integrating of green technology in the sustainable development process. This study investigates the heterogenous effects of green technology development, green energy, R&D expenditures, FDI, economic growth, and urbanization on CO2 emissions in 25 European Union (EU) countries using panel quantile regression over the period 2000–2021. The results, based on panel quantile regression, indicate that green energy decreases CO2 emissions from the 10th to the 90th quantiles, while green technology development increases CO2 emissions at the lower quantiles (10th to 60th) and then turns negative. The robustness of the fixed effect model also confirms the findings of the study. Additionally, panel causality tests indicate no causal link between green technology development and CO2 emissions, but there is bidirectional causality between green energy and CO2 emissions. Therefore, the findings highlight that policymakers should thoroughly evaluate measures and strategies to encourage the development of green technologies and green energy sources to reduce high levels of CO2 emissions. One strategy is to provide financial aid and support technological advances to produce green energy at reduced costs. [Display omitted] •Green energy is are key for reducing CO2 emissions, lowering environmental impact, and creating economic opportunities.•Panel quantile regression results show green energy consistently decreases CO2emissions from the 10th to the 90th quantiles.•Green technology development increases CO2 emissions at the lower quantiles (10th to 60th) and then turns negative.•Panel causality tests reveal no causal link between green technology and CO2 emissions.•Panel causality tests show a bidirectional causality between green energy and CO2 emissions.