PepsiCo, which has been calculating the carbon footprint of its Walkers Crisps potato chips in the UK since 2007, revealed some of the secrets behind its methodology in a recent article at Marketing Magazine.
Martyn Seal, Sustainability Director of PepsiCo Europe, said that the carbon footprint must include all steps of the supply chain to be effective.
PepsiCo Europe worked with the Carbon Trust to develop the carbon footprint of Walkers Crisps, which carry the Carbon Reduction Label. Since then, it also has put the label on 1 kilogram packages of Quaker Oats, as well as Oatso Simple Original and Oatso Simple Golden Syrup.
The first step is to develop a map showing the stages of the supply chain, from growing raw materials to making the product to getting it on the shelf and finally disposing of the packaging.
Second, evaluate the energy consumed at each stage and convert it into the amount of emissions associated with each stage, finally adding up all these elements to determine the carbon footprint of each unit sold.
See more... http://www.environmentalleader.com/2009/10/05/pepsico-reveals-method-for-calculating-carbon-footprint-of-products/
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