Energy-saving 5G features could cut carbon emissions across the UK economy

The study, published in Resources, Conservation and Recycling, challenges the assumption that 5G will inevitably increase the UK’s energy demand. Instead, researchers show that next-generation network technologies have the potential to reduce emissions across many industries that rely on the digital infrastructure that keeps them online – from finance and IT to transport and construction. 

Using UK economic and emissions data, the team established an environmentally extended input–output (EEIO) model tailored specifically to the Information and Communication Technology (ICT) sector. This allowed them to trace how cutting energy use in 5G can send knock-on effects across 33 industries of the UK economy. 

Working in collaboration with Professor Ming Xu from Tsinghua University, researchers looked at 10 emerging technologies – six targeting how base stations operate and four designed to make user devices more energy-efficient. These included AI-driven multi-level sleep modes, which let mobile masts switch off when demand is low, reconfigurable intelligent surfaces (RIS) such as smart panels that redirect radio waves using little power, “cluster-zooming” in cell-free MIMO networks that allow groups of small antennas to expand or shrink coverage so energy is not wasted, and smarter handset signalling.