Initiative: To use 30 percent less energy in new stores and to make existing stores 20 percent more energy-efficient by 2013.
Footprint: Wal-Mart spent about $30 million retrofitting 500 stores with LED lighting, 350 with energy-saving HVAC systems, and 400 with more efficient refrigeration systems. If successful, this will cut annual electricity use by 3.5 million megawatt-hours.
