The transition toward a low-carbon global economy requires not only increased investment in green technologies but also improvements in the efficiency with which such innovations contribute to decarbonization. This study evaluates the efficiency of green technology innovation in promoting global decarbonization using a Data Envelopment Analysis (DEA) framework based on the Charnes–Cooper–Rhodes (CCR) model, which assumes constant returns to scale. Drawing on cross-country panel data, the study constructs an efficiency model incorporating green innovation inputs—such as research and development (R improving innovation efficiency is equally critical. Second, countries can benefit from benchmarking against frontier economies to optimize resource allocation and institutional support mechanisms. Overall, this study contributes to the literature on climate policy and sustainable development by providing an efficiency-based perspective on the role of green technological innovation in achieving global decarbonization targets.
Dr. D. VIMAL KUMAR (Thu,) studied this question.