In the race against climate change, the focus has turned towards achieving the 2050 net-zero carbon target. Achieving net-zero means balancing between the amount of greenhouse gas removed from the atmosphere and those produced and released. Efforts are needed on both sides to find suitable solutions to reduce released emissions and to remove current emissions from the atmosphere. A collective effort revolving around the utilisation of new technologies, particularly in wireless and mobile communications, is needed to achieve the net-zero carbon target.

• Chapter 1: The role of mobile communication in achieving net zero: the current status
• Chapter 2: 6G radio hardware - contributing to the net-zero target
• Chapter 3: The role of 6G and beyond for urban air mobility and utilising space systems for road to net-zero carbon
• Chapter 4: Sustainable RF wireless power transfer and energy harvesting and their applications
• Chapter 5: Long distance power transmission
• Chapter 6: Energy-efficient architectures for 6G networks
• Chapter 7: Energy-efficient UAV communication and deployment
• Chapter 8: Cooperative intelligent transport systems for net-zero
• Chapter 9: Intelligent reflective surfaces (IRSs) for green networks
• Chapter 10: Energy efficient optical receivers for next generation non-terrestrial communication networks
• Chapter 11: The role of 6G in green energy generation
• Conclusion