Banrock Station is launching two of its wines in Tetra Pak cartons to highlight its green credentials.

The new Ecomate format has been developed to meet the needs of the brand's loyal fans, a fifth of whom only buy products from companies whose ethics they agree with, according to research by brand owner Constellation Europe.

Ecomate is made from 77%-renewable sources, is recyclable and is more energy-efficient because it is lightweight, says the company. "The environment has always provided Banrock Station with its main point of difference so the launch of Ecomate is a logical step forward," said environmental manager Tony Sharley.

Banrock Station Ecomate is available for the brand's Shiraz and Chardonnay wines, rsp £6.49 for a litre.

Government-funded body Wrap praised the wine industry earlier this year for the measures it has taken to reduce its carbon footprint by using lighter packaging and new methods of transport.