Theme 1: Intelligent Buildings and Smart Operations
Building Information Modeling (BIM) and Digital Twin Technology
IoT driven intelligent building system integration
AI assisted prediction and optimization of building energy consumption
Smart Building Management System and Facility Operation and Maintenance
Building automation and intelligent control of HVAC systems
Indoor environmental quality monitoring and adaptive adjustment
Intelligent renovation plan for existing buildings
Fault prediction and health management of construction equipment
Intelligent Lighting and Energy Demand Response
Human Computer Interaction and User Experience Design
Topic 2: Low Carbon Technologies
Clean energy
Nuclear power and natural gas
Renewable energy
Wind energy
Solar energy
Biomass energy
Water pollution control project
Carbon emission
Haze pollution
New energy vehicle
Hybrid electric vehicles
Pure electric vehicle
Hydrogen fuel cell vehicle
Ethanol fuel vehicle
Biodiesel vehicles
Natural gas vehicle
Afforestation
Water saving agriculture
Organic farming
Sustainable development of ecological resources
Industrial Structure and Technology and Energy Conservation
Green Services
Low-carbon logistics
Intelligent Information Technology/Green Consumption
Industrial Management and Energy Conservation
Green Collaborative Innovation
Green development model, etc
Theme 3: 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