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Walmart's New Initiative: Supply Chain GHG Reduction
Walmart announced a goal to eliminate 20 million metric tons of greenhouse gas (GHG) emissions from its global supply chain by the end of 2015.
This represents one and a half times the company's estimated global carbon footprint growth over the next five years and is the equivalent of taking more than 3.8 million cars off the road for a year.
The footprint of Walmart's global supply chain is many times larger than its operational footprint and represents a more impactful opportunity to reduce emissions.
Walmart collaborated with Environmental Defense Fund (EDF) to develop this approach that looks at the supply chain on a global scale. Other external advisers include PricewaterhouseCoopers, ClearCarbon Inc., the Carbon Disclosure Project and the Applied Sustainability Center (ASC) at the University of Arkansas. This team will identify projects, quantify reductions, engage suppliers and ensure proper procedures are followed for each GHG reduction claim.
The program to reduce GHGs has three main components:
Selection -- Walmart will focus on the product categories with the highest embedded carbon. This is defined as the amount of life cycle GHG emissions per unit multiplied by the amount the company sells. To find the embedded carbon, the ASC reviewed the GHG emissions associated with all Walmart product categories. This approach ensures the project team focuses on the categories that have the greatest opportunity for reductions. Reductions can come from any part of a product’s life cycle.
Action -- For a project to be included as part of this goal, it must reduce GHGs from a product in either the sourcing of raw materials, manufacturing, transportation, customer use or end-of-life disposal. Walmart must demonstrate it had direct influence on the reduction and show how that reduction would not have occurred without Walmart’s participation.
Assessment -- Suppliers and Walmart will jointly account for the reductions. ClearCarbon will perform a quality assurance review of those claims to ensure methodology, completeness and calculations are correct. When the claims meet the quality assurance check, PricewaterhouseCoopers will assess under consulting standards whether the defined procedures were followed consistently to quantify the reduction claim.
More information on Walmart's program to reduce GHG emissions is available at walmartstores.com/greenhousegas.
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