Greenhouse Gas Emissions

Greenhouse Gas: Why it Matters

Energy is what moves us forward. It lights our way. It helps us live better. But it also comes to us at a cost -- greenhouse gas pollution.

Learn what Walmart is doing to save energy and what you can do to help.

Reducing carbon emissions in our stores and global supply chain

To act responsibly, every company should reduce greenhouse gas (GHG) emissions as quickly as it can. We’re committed to reducing our carbon footprint, and we’re working with our suppliers to do the same.

Reducing GHG emissions by 20%

We’re making progress toward our goal of reducing greenhouse gas emissions from our stores, clubs and distribution centers worldwide by 20% by the end of 2012. By the end of 2010 (the most recent data available), we saw an absolute GHG reduction of 12.74%, compared to our 2005 baseline.

A number of factors have contributed to our progress, including renewable energy projects and a variety of technological advances. In 2011, we became one of the first retailers in the U.S. to incorporate the secondary loop refrigeration system into our new store design. This system alone is expected to cut refrigerant-related emissions by as much as 95%.

Eliminating 20 million metric tons of GHG from our supply chain

We understand the GHG associated with our global supply chain is many times larger than our direct emissions. So in February 2010, we announced our goal to eliminate 20 million metric tons of GHG emissions from our global supply chain by the end of 2015.

To date, we’ve eliminated more than 120,000 metric tons of GHG emissions and have innovation projects identified with the potential to reduce emissions by a combined 16 million metric tons. Examples range from our collaboration with a supplier to adjust freezer temperatures for specific cold chain products to a focus on sustainable palm oil and beef production.

We knew this goal was an aggressive one, and we’ve encountered a variety of challenges along the way. When there is no predefined roadmap to success, we must rely on experimentation, trial and error, and rapid prototyping before we can scale real innovation. Slowly but surely, we’re creating that path and using what we learn to adjust our course, with an unwavering commitment to our ultimate goal.

We’re eagerly looking for suppliers interested in partnering with us on GHG supply chain innovations and are working to connect initiatives, which have the potential to reduce several million tons of GHG emissions. We’ve established the foundation for significant progress in the years ahead.