Tesco has launched a carbon footprint label on 20 of its own-brand products to inform consumers about the environmental impact of products.

The supermarket has been working with the Carbon Trust to produce the labels, which show how many grammes of CO2 have been created in the production, packaging, distribution and disposal of the products.

The Carbon Reduction Label also demonstrates a commitment to reduce the product’s carbon footprint over a period of two years.

Tesco chief executive Sir Terry Leahy said: “We’re delighted to be taking this major step with the Carbon Trust. We want to give our customers the power to make informed green choices for their weekly shop and enlist their help in working towards a revolution in green consumption.”

The 20 products labelled in the pilot scheme span four categories – orange juice, washing detergent, light bulbs and potatoes. This will enable consumers to compare the carbon impact of like-for-like products for the first time, for example, comparing liquid washing detergent with its powder equivalent.

Last year, Walkers, Boots and Innocent Drinks became the first retailers and brands to trial the Carbon Reduction Label on a small number of products.