Role of Non-Renewable Energy Efficiency and Renewable Energy in Driving Environmental Sustainability in India: Evidence from the Load Capacity Factor HypothesisAndrew Adewale Alola, Ojonugwa Usman, Oktay Özkan|Energies|2023Cited by 167
Assessing the impact of resource efficiency, renewable energy R&D spending, and green technologies on environmental sustainability in Germany: Evidence from a Wavelet Quantile-on-Quantile RegressionOktay Özkan, Ojonugwa Usman, Babatunde Sunday Eweade|Journal of Cleaner Production|2024Cited by 131
Analysing the nexus between clean energy expansion, natural resource extraction, and load capacity factor in China: a step towards achieving COP27 targetsOjonugwa Usman, Babatunde Sunday Eweade, Oktay Özkan et al.|Environment Development and Sustainability|2024Cited by 82
Examining crude oil price outlook amidst substitute energy price and household energy expenditure in the USA: A novel nonparametric multivariate QQR approachAndrew Adewale Alola, Ojonugwa Usman, Oktay Özkan|Energy Economics|2023Cited by 80
Dynamic connectedness of clean energy markets, green markets, and sustainable markets: The role of climate policy uncertaintyOktay Özkan, Ojonugwa Usman, Tomiwa Sunday Adebayo|Energy|2024Cited by 68