Government-funded waste body Wrap has praised the UK wine trade for the actions it is taking to reduce its carbon footprint.
Moves by Morrisons, Tesco, Constellation Europe and PLB Wines to use lighter glass bottles should result in savings of at least 4,500 tonnes of carbon in the next 12 months - the equivalent of taking 2,500 cars off the road, said Wrap.
"The actions of these four alone will impact nearly 90 million wine bottles," said Wrap glass technology manager Andy Dawe. "It is great to see the industry optimising packaging, which will benefit the environment and consumers."
Tesco has been using lighter glass across its own-label range, which could save 2,500 tonnes of glass each year, claimed Dawe.
Constellation has been developing lighter bottles for its Echo Falls brand and the UK's biggest wine brand by volume, Stowells, saving 2,800 tonnes of glass.
"The new bottles are not radically different in shape and can be used on our filling lines without any major modifications," said Constellation's packaging development manager Mike Bullock.
Work by Morrisons and PLB could save 200 and 320 tonnes per year respectively.
Moves come as the wine trade finds itself under more pressure to cut its carbon footprint. Retailers have announced listings of lighter bottles and new formats in the past six months, such as a pouch from Arniston Bay and PET bottles under the Wolf Blass label.