- Energy Systems 384
- Renewable and Green Energy 157
- Power Electronics, Electrical Machines and Networks 121
- Energy Policy, Economics and Management 78
- Energy Storage 66
- Circuits and Systems 51
- Sustainable Architecture/Green Buildings 38
- Artificial Intelligence 29
- Fossil Fuels (incl. Carbon Capture) 25
- Electronics and Microelectronics, Instrumentation 23
- Sustainable Development 21
- Signal, Image and Speech Processing 18
- Engineering Thermodynamics, Heat and Mass Transfer 17
- Engineering Design 16
- Environment, general 16
- Energy Efficiency 15
- Classical Mechanics 14
- Control, Robotics, Mechatronics 14
- Automotive Engineering 13
- Energy Materials 13