LIGHTING THE WAY: Swedish retailer Ikea plans to sell only energy-efficient LED lighting by 2016, a move it announced two years after it said it was phasing out incandescent bulbs.

WALKING THE WALK: The company will also install the longer-lasting bulbs in its stores, helping it save about $10 million to $20 million a year, or 10 percent, in lighting costs at its 300 locations worldwide.

ELSEWHERE: Ikea hopes to set an environmentally friendly example, but other large retailers said that, while they are experimenting with shifting to LED lighting in stores, they are still selling all types of bulbs for now.