Their 2016 ET Carbon Rankings report, released today, shows that nearly half of the largest listed companies have disclosed their emissions, and that the dirtiest 50% have the potential to save 1.4 billion tonnes of CO2.
In addition, the 1,000 least carbon-intensive companies have been shown to outperform the 1,000 most intensive ones over the last five years.
Former UK secretary of state for energy and climate change, Chris Huhne, said: “Sector by sector there are champions and dunces. Some companies can be over 100 times less carbon intensive than others in the very same industry.
“Backing the champions makes sense because carbon-efficient companies have outperformed the market average over the last five years.”
Out of the world’s 800 largest listed companies, 363 have fully disclosed their direct emissions from operations, seen as the first step to setting targets and putting carbon management initiatives in place.
These disclosers have increased their carbon efficiency by an average 15% from 2015 to 2016, saving 360 million tonnes of CO2, equivalent to the annual emissions of Turkey.
However there is a huge range of efficiency within the same sector, with Petronas Chemicals Group, in Malaysia, emitting 13,961 tonnes of CO2 for every million dollars of revenue, 481 times less carbon-efficient than the UK’s Johnson Matthey for example.
It was found that computer software company Oracle is the world’s most carbon-efficient company, producing just 34 tonnes of carbon for every $1m of revenue, followed by two more US companies, biotechnology company Biogen at 40 tonnes, and software company Adobe Systems at 41 tonnes.
Top 10 carbon-efficient companies: