Three UK claims to have increased its network energy efficiency by up to 70 percent at selected sites since deploying Ericsson's dual-band Radio 4490 late last year.

In an announcement, the telco noted the AI-powered hardware and software solutions from the Swedish vendor have helped it to deliver additional smart and sustainable networks.

According to Ericsson, its dual-band Radio 4490 consumes less power and is also 25 percent lighter than previous models, simplifying site access, which it says speeds up site upgrades.

Three stated the radios have been able to reduce site footprint and have lowered its CO2 emissions.

Ericsson's radio implements a range of software solutions designed to improve energy efficiency, including advanced machine learning, passive cooling, and power-saving features.

The features work autonomously across 4G and 5G networks, and have the ability to switch off radio components when not active while having the capability to switch on again in microseconds for the next service request.

“Three UK’s collaboration with Ericsson marks a milestone in our commitment to sustainability," said Iain Milligan, chief network officer, Three UK.

"We’ve achieved excellent improvements in energy efficiency while expanding network capabilities for our customers. We plan to take these learnings on board for future projects, ensuring that we continue to improve the environmental impact of our network.”

Three is poised to merge with Vodafone in the UK, in a deal expected to be worth £15 billion ($19.1bn).