One of the easiest ways to cut your electricity bill is to switch your lights from incandescent to LEDs, which use far less energy — and are rated to last far longer — than older types of bulbs.
But, even among LED bulbs, there are some that are more efficient than others. Philips new Ultra Efficient LED bulbs are just that. These new lights, which just went on sale, use just 4.5 watts of energy, which is about half as much as some of the more popular LED bulbs available today. Philips estimates the bulbs will cost you as little as 55 cents per year, and will last up to 45.7 years.
