A little over a year ago, a light bulb went off in European minds. . . and their homes, too. At the urging of the EU, residents of European countries began the switch from regular light bulbs to ones that conserve energy. In-fact, the old bulbs (100w ) have been banned and consumers can no longer purchase them for their homes. The EU hopes that when 2020 arrives, enough energy will have been saved to keep 11 million residencies with power a year.There are two categories of new bulbs on the market; revamped and LED bulbs. The light emitting diodes lights (also named LED) last for longer than other products, but also, they are not made with mercury. In an effort to make the move from old light bulbs to energy efficient ones easier, there have been improvements to the old product, too. The halogen, incandescent bulbs provide the same light as their predecessors without using as much energy. Consumers can now choose from four different bulbs: compact fluorescent lamps, C-class improved incandescent bulbs, Light emitting diode (LED) lamps, and B-Class improved incandescent bulbs.No matter which bulb is more efficient for your home, the current switch is a step towards a brighter, more eco-friendly future.