Carbon dioxide Renewable energies 7 CO2 emissions 6 CO 2 emission 5 Economic and social effects 5 Economic growths 4 Economics 4 renewable energy 4 Carbon 3 Expansion 3 Investments 3 Carbon emissions 2 Commerce 2 Costs 2 Electric power utilization 2 Emission control 2 Energy 2 Energy conservation 2 Energy management systems 2 Environmental technology 2 Foreign direct investments 2 Gross domestic products 2 Information and Communication Technologies 2 Life cycle 2 OECD countries 2 Pooled mean group 2 Renewable electricity 2 Technology usages 2 Trade openness 2 gross domestic product 2