America Macy's stores intends to replace over 117,000 43-watt halogen-based bulbs used for accent lighting in 86 department stores with 17-watt custom-designed Philips EnduraLED PAR38 SP15 lamps, which makes it the first department store to use LEDs on a wide scale.

According to a report from Environmental Leader, the custom-designed Philips EnduraLED PAR38 SP15 lamps (say that three times fast) are rated for a 45,000 hour lifespan.It will help Macy's trim their electricity use by a whopping 73% and willshow Macy's a return on investment before the end of the first year.

Before Macy's lighting retrofit, Starbucks has also earned green props through its initiative to switch 8,000 of its shops to LED lighting to help curb its carbon footprint.