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Estimating Long-Run Relationship between Renewable Energy Use and CO 2 Emissions: A Radial Basis Function Neural Network (RBFNN) Approach

Author

Listed:
  • Pradyot Ranjan Jena

    (School of Management, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India)

  • Babita Majhi

    (Department of CSIT, Guru Ghasidas Vishwavidyalaya (Central University), Bilaspur 495009, India)

  • Ritanjali Majhi

    (School of Management, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India)

Abstract

The long-run relationship between economic growth and environmental quality has been estimated within the framework of the environmental Kuznets Curve (EKC). Several studies have estimated this relationship by using statistical models such as panel regression and time series regression. The current study argues that there is a nonlinear relationship between environmental quality indicators and economic and non-economic predictors and hence an appropriate nonlinear model is required to predict it. An adaptive and nonlinear model, namely radial basis function neural network (RBFNN) has been developed in this study. CO 2 emission is used as the target output and renewable energy consumption share, real GDP, trade openness, urban population ratio, and democracy index are used as the predictors to estimate the EKC relationship for nineteen major CO 2 emitting countries that account for 78% of the global emissions. The model developed in this study could predict the CO 2 emissions of all the countries with more than 95% accuracy. This finding underlines the usefulness of the RBFNN model which can be used to predict emission levels of other pollution indicators at the global level. Further, comparing two models, one with all the predictors and the other excluding the renewable energy share, it was found that the model with renewable energy share predicts CO 2 emissions more accurately. This reinforces the already strengthening campaign to encourage industries and governments to increase the share of renewable energy in total energy use.

Suggested Citation

  • Pradyot Ranjan Jena & Babita Majhi & Ritanjali Majhi, 2022. "Estimating Long-Run Relationship between Renewable Energy Use and CO 2 Emissions: A Radial Basis Function Neural Network (RBFNN) Approach," Sustainability, MDPI, vol. 14(9), pages 1-17, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:9:p:5260-:d:803152
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