Walmart has told its annual investors' meeting that it will   add $150 million in benefits to its bottom line from sustainability initiatives such as solar and wind energy projects, fuel cell installations, and its zero waste program in the financial year 2013.They have also  cut their plastic shopping bag waste about 3.1 billion bags in 2011, a 35 percent reduction from a 2007 baseline, beating its goal of a 33 percent cut by 2013.That's one big heap of plastic bags!

 This comes on top of the  $231 million the company says it saved last year from waste reduction and recycling.

In its own reports , Walmart states that it kept 80.9% of waste from its US operations out of landfills in 2011.It aims to  eliminate landfill waste from US stores and Sam’s Club locations by 2025.

Its UK chain is already achieving that . ASDA sends zero food waste to landfills.
But the percentage is much lower in other places.

 In China and Brazil, Walmart stores diverted 52 percent of operational waste from landfills in 2011.

Walmart also boasts being a major onsite power gnerator in the US, especially at its Texas and California stores.Its biggest yet solar installation is yet to come in Phoenix, Arizona with a 3.3MW system