UK telco BT Group has been lauded over the years for its sustainability efforts. In some cases, this praise is well won. The firm has been buying renewable electricity for 99.9% of its needs globally since 2020 and was a leader in the telco sector for having set early net zero targets. But there is still much to be done to lower emissions in the sector, not least across the supply chain, or Scope 3 emissions. One target that mobile operators are watching closely, is the energy efficiency benefits of 5G Standalone (SA), compared with the existing mismatch of networks. A fully functioning 5G SA network promises to provide 10x greater energy efficiency than 4G. This week, Wireless Watch sat…