The purpose of this study is to investigate the influence of renewable energy research and development (R&D) investment and the environment-related technological innovations, on the quality of the environment of the G7 economies over a period spanning from 1990 to 2020. The role of economic growth, R&D, and human capital has also been examined. For this very purpose, Panel data approaches, such as slope heterogeneity and cross-section dependence, have been used. All the variables taken into account are found in the long run cointegration association. The study also uses the novel Method of Moment Quantile Regression to determine the individual impact of each variable. The examined results have asserted that economic growth and human capital are positively associated with carbon emissions. Whereas the development of environment related technologies significantly reduce the level of emissions. On the other hand, R&D and renewable energy R&D exhibit a U-shaped influence on carbon emissions. The Dumitrescu and Hurlin Granger panel causality test reveals a bidirectional causal association of carbon and all the other variables taken into consideration. These results are found robust, as validated by the quantile regression. Based on the empirical results, this study suggests enhancing the financing efforts towards R&D, renewable energy R&D, and environment-related technological innovations, in order to attain environmental sustainability.

本研究的目的是调查可再生能源研发 (R&D) 投资和环境相关技术创新对 1990 年至 2020 年期间 G7 经济体环境质量的影响。还研究了经济增长、研发和人力资本。为此目的，使用了面板数据方法，例如斜率异质性和横截面依赖性。所有考虑的变量都在长期协整关联中找到。该研究还使用新颖的矩分位数回归方法来确定每个变量的个体影响。检查结果断言，经济增长和人力资本与碳排放呈正相关。而环境相关技术的发展显着降低了排放水平。另一方面，R&D和可再生能源R&D对碳排放呈现U型影响。Dumitrescu 和 Hurlin Granger 面板因果关系检验揭示了碳和所有其他考虑变量的双向因果关系。正如分位数回归所验证的那样，这些结果是稳健的。基于实证结果，本研究建议加强对研发、可再生能源研发和与环境相关的技术创新的融资力度，以实现环境的可持续性。Dumitrescu 和 Hurlin Granger 面板因果关系检验揭示了碳和所有其他考虑变量的双向因果关系。正如分位数回归所验证的那样，这些结果是稳健的。基于实证结果，本研究建议加强对研发、可再生能源研发和与环境相关的技术创新的融资力度，以实现环境的可持续性。Dumitrescu 和 Hurlin Granger 面板因果关系检验揭示了碳和所有其他考虑变量的双向因果关系。正如分位数回归所验证的那样，这些结果是稳健的。基于实证结果，本研究建议加强对研发、可再生能源研发和与环境相关的技术创新的融资力度，以实现环境的可持续性。