In 2005, Walmart announced that it was setting a goal of being “supplied by 100 percent renewable energy” — and has since received a steady stream of positive press for its commitment. But six years later, the giant retailer still derives less than 2 percent of its electricity from its solar projects and wind-power purchases. At its current pace of converting to renewables, it would take Walmart about 300 years to get to 100 percent clean power. Continue reading