As we expand our reach around the world, we are working to reduce our energy use and greenhouse gas emissions. By investing in this key area, we are ensuring a cleaner environment, while saving our customers money and bringing new technology to market.

Setting the stage for long-term success

As part of our aspirational goal of being supplied by 100 percent renewable energy, we envision a world where people do not have to choose between electricity they can afford and renewable electricity that is good for communities and the planet.

    As such, Walmart's renewable energy activities are focused on

  • Development and installation of new renewable energy projects
  • Driving down the cost of renewable energy
  • Building scale
  • Securing cost-effective, stable energy pricing that meets or beats utility power pricing

Additionally, we are committed to experimenting, piloting and scaling a variety of cutting-edge and proven technologies to propel our use of renewable energy around the world.

To date, we have more than 180 renewable energy projects in operation or under development across our global portfolio, providing us more than one billion kilowatt hours of renewable electricity annually. That is enough to power 78,000 American homes1 every year. Added together with the renewable electricity we are supplied by the grid, 22 percent of Walmart's electricity needs globally are supplied by renewable sources (more detail in the section below).

All of this power generates no greenhouse gas emissions, and is being delivered in a cost-effective manner, demonstrating that a new energy future can contribute to everyday low costs and enable everyday low prices for our customers.

During fiscal years 2006, 2007 and 2008, foreign currency exchange rates had a USD $1.4 billion, USD $1.5 billion and USD $4.5 billion favorable impact on net sales, respectively. As a result, efficiency improvements when calculated as global CO2 emissions per USD $1 million of global net sales, appear stronger than if there had been no exchange rate impact to net sales. In fiscal years 2009 and 2010, we experienced respective USD $2.3 billion and USD $9.8 billion unfavorable currency exchange rate impacts, meaning we managed to decrease our emissions per million in sales even with increased adverse currency rate impacts. This trend reversed in fiscal year 2011, and we experienced $4.5 billion favorable currency exchange rate impacts. This improves our rate of efficiency per unit of net sales. We fully expect future currency exchange rates and market conditions to impact this measurement and potentially impact future CO2 per net sales ratios either for the positive or for the negative.