Does Walmart Have a Dirty Energy Secret? The amount of energy Walmart gets from renewables has decreased from 4 percent to 3 percent, a new study finds. By Katherine Bagley November 20, 2014 Solar panels coat the roof of a Walmart store in Santa Ana, California. It was one of the first Walmarts in 2007 to be outfitted with solar arrays. A new report says that despite claims of being a clean energy leader, the amount of electricity the corporation gets from renewable energy has dropped from 4 percent to 3 percent in the past two years. Credit: Walmart Corporation Related Share this article Fo...