Theme 1: Green Energy
Renewable energy engineering (solar energy, bioenergy, wind energy, nuclear energy, hydrogen energy, etc.)
Traditional energy engineering (traditional electricity such as coal, oil, natural gas, etc.)
Energy materials
Energy storage technology
Energy saving technology
Energy and Chemical Industry
Energy Security and Clean Utilization
Hazardous solid waste management
Sustainability of Society and Environment
Energy equipment and technology
Thermophysics and Thermal Energy Engineering
Clean energy technology
Energy storage technology
Green energy development technology
Natural gas hydrate development technology
Renewable energy development technology
Geothermal and hydrogen energy development technology
Energy saving technology
Thermal and Power Engineering
Clean Development Mechanism 
Thermal, Hydraulic, and Safety Analysis of Nuclear Reactors
Non steady state thermodynamics and
Topic 2: Energy saving and Environmental Protection Technologies
Industrial energy conservation
Building Energy Efficiency
Civil energy conservation
Comprehensive utilization of resources
Solid waste treatment and disposal
Soil pollution control and remediation
Water ecological restoration and ecological protection
Pollution environmental monitoring
Air pollution prevention and control technology
Waste gas recovery and treatment technology
Topic 3: Power Grid System
Security and resilience of community level microgrids
Electric motors and transformers
The Development of Smart Grid
Electric vehicle charging technology and system integration
High voltage system
Modeling and Simulation
Modeling and Demand Response Management of Cyber Physical Smart Grid
Electric vehicle
Grid to car (G2V) and car to grid (V2G)
Industrial Automation and Control
Power Electronics and Drivers
Power Quality (PQ)
Power system operation and planning
Reliability of power system
Power system control and protection, etc