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This study examines the relationship between energy, innovation, economic growth, and carbon emissions in the G20 countries, which substantially influence global economic and environmental policies. The study focuses on key variables, including GDP, carbon emissions, total energy consumption (encompassing all energy sources, such as fossil fuels, renewables, and nuclear, measured in gigajoules), and energy use (per capita electricity consumption, measured in kilowatt-hours). Additionally, it considers the adoption of renewable energy sources and innovation indicators such as gross expenditure on research and development and the number of patents in environmental-related technologies. The study investigates annual data from 2000 to 2020 using panel data analysis and econometric techniques. The findings reveal significant long-term relationships, indicating that an increase in innovation, as measured by R&D expenditure and patents, is associated with a reduction in carbon emissions. Simultaneously, economic growth tends to correlate with increased energy consumption. Therefore, it is essential to strike a balance between growth and sustainability. Through panel data analysis, a long-run, bi-directional relationship is established between research and development (R&D) and CO2 emissions, as well as between patents in environmentally related technologies and CO2 emissions, indicating that increases in R&D and patents can lead to lower CO2 emissions. At the same time, changes in emissions also influence R&D investments. Additionally, bidirectional relationships are observed between R&D and GDP per capita and between CO2 emissions and GDP per capita. These important findings should help policymakers and key stakeholders achieve innovation-driven economic growth that balances large economic progress with strong ecological protection. G-20 nations must implement policies that promote renewable energy use and energy efficiency, striking a balance between economic growth and environmental protection to ensure a sustainable future.
Khanna et al. (Mon,) studied this question.