Energy Policy, Economics and Management Energy and state 205 Energy policy 205 Electric power production 45 Electrical Power Engineering 45 Environmental Economics 42 Environmental economics 42 Renewable Energy 42 Renewable energy sources 42 Sustainability 39 Mechanical Power Engineering 38 Climate Sciences 17 Climatology 17 Industrial Management 15 Building Physics, HVAC 14 Building Construction and Design 13 Buildings-Design and construction 13 Buildings-Environmental engineering 13 Environment 13 Environmental Sciences 13 Economic development 12 Civil Engineering 9 Civil engineering 9 Economic Development, Innovation and Growth 9 Engineering Thermodynamics, Heat and Mass Transfer 9 Heat engineering 9 Heat transfer 9 Industrial Organization 9 Industrial organization 9 Mass transfer 9