Vodafone is the most sustainable major ICT company in the world, with Verizon and AT&T the worst, according to a report from the Two Tomorrows Group.
Vodafone achieved a score of 60 percent, largely thanks to its its recycled materials initiative - Re-made on Earth from Nothing New - and its Nokia Life Tools programme.
It was followed by Nokia with 55 percent and HP with 52 percent. Panasonic comes in for a special mention, having reported an absolute reduction in its carbon emissions.
"ICT companies are increasingly recognising the commercial opportunity that lies in helping other industry sectors reduce their carbon footprint, and in using their technology to offer socially valuable services such as health monitoring or education," says Thomas Krick, global manager of the Tomorrow’s Value program .
"Vodafone is best positioned to turn some of the world’s most pressing sustainability challenges into business opportunities, thereby combining positive impacts with the generation of shareholder value. The company has a strong track record of developing services that help improve the lives of disadvantaged people and remote communities."
AT&T scored just 28 percent, with Verizon the bad boy of the group with a score of just 23 percent.
Two Tomorrows looked at the 20 largest ICT companies, based on the Fortune 500. It examines companies on their strategy, governance, engagement with stakeholders, value chain and innovation.
"While the sector continues to push best practice in sustainability innovation, the management of its direct environmental impacts often offers room for improvement," said Jason Perks, group director at Two Tomorrows.
"For example, while most companies have set CO2 emissions targets, the majority struggle to achieve significant reductions."