The supermarket group said it plans to reach net-zero emissions by 2035, compared to its previous target date of 2040, having reduced its carbon footprint by 47% over the last 17 years.
The FTSE 100 retailer said it had written to 400 of its key suppliers, asking them to give details of their own efforts in reducing their carbon footprints.
“We have a strong heritage in reducing our own emissions and are collaborating closely with our suppliers to ensure we’re driving positive change across our value chain too,” said Simon Roberts, the chief executive officer of Sainsbury’s.
The supermarket chain said it will have switched all of its electricity to renewable sources by the end of this year.
Sainsbury’s was not the only one burnishing its green credentials on Tuesday; Waitrose, the supermarket chain beloved of Britain’s middle class, said it would start to sell potato milk as yet another alternative to dairy milk.
From February of next year, Waitrose will begin stocking the Swedish potato milk brand Dug.
Dug produces three strains of potato milk: original; barista and unsweetened.
The company claims the milk “makes perfect foam in coffee” and works just like any other milk.