The 21st IEEE International Conference on Green Computing and Communications (GreenCom 2025) will be held in Zhengzhou, Henan, China, October 30- November 02, 2025. Computer networks, communication systems, and other IT infrastructures have a growing environmental footprint due to the significant amounts of energy consumption and greenhouse gas emission. To address such problems and create a sustainable environment, new energy models, algorithms, methodologies, platforms, tools and systems are required to support next-generation computing and communication infrastructures. Thus, green computing and communications solutions should be designed to better integrate renewable energy sources, to improve energy efficiency, and to reduce greenhouse gas emissions and harmful materials. Topics for submissions include but are not limited to the following:

IEEE GreenCom 2025 Tracks and Topics

Track 1: Green Computing and Communication Technologies

Green infrastructure sustainable design and technologies
Energy- and power-constrained devices and gateways
Ultra-low power systems architectures
Low-power, distributed data processing on sensors
Energy-efficient M2M wired and wireless communications and networking
Optimization and/or analysis in green computing and communications (including core network optimization)
Green big data, cloud, and data center architecture
Green technologies for 5G (SDN, IoT, and crowdsourcing, etc.)
Energy harvesting communications and networks

Track 2: Smart Energy and Smart Grid

Smart metering infrastructure and technologies
Large-scale monitoring, control and demand response
Advanced data fusion, mining and modeling in smart grid
Management and control of distributed energy generation, storage and consumption
Advanced smart grid applications: grid-to-vehicle and vehicle-to-grid, Micro-grid

Track 3: Green Society Applications

Smart sensing systems
Smart city
Green vehicle, green home, green buildings and green anything
Green industrial automation and control
Intelligent Transport Systems and control
Energy efficiency in aerial/UAV communication networks
Green social networks
Applications of blockchain in energy management and trading