The entire environmental life cycle of the product is incorporated into the calculation: From farming and the use of water, fertiliser and feed to transport and packaging – everything is taken into consideration. For the aspect of climate, the life cycle assessment companies treeze and intep carried out the initial assessment for us. Afterwards, Stiftung myclimate also validated this. In essence, emission values from internationally recognised databases were assigned to each of the product categories. For climate-relevant areas such as meat, we went one step further and created specific life cycle assessments for individual products. The value chain can thus be visualised in detail.
Based on these values, the product range was then rated on a climate scale of one to five stars. Approximately 50% of Migros products receive one star for climate. Only some 5% of products receive five stars. This proportional distribution of stars to the product range is not set in stone. If individual aspects are optimised, this may result in this distribution improving over time.
Five stars: 5% of the product range (0–0.9 kg CO2eq/kg)
Four stars: 5% of the product range (1–1.9 kg CO2eq/kg)
Three stars: 15% of the product range (2–4.7 kg CO2eq/kg)
Two stars: 25% of the product range (4.8–9.9 kg CO2eq/kg)
One star: 50% of the product range (>10 kg CO2eq/kg)
In short, every product with 10 kg CO2eq/kg or more is allocated to the worst climate category. We have also discussed and validated this distribution with our external partners – treeze, intep and myclimate.