It all started in In the United States, when the Energy Independence and Security Act of 2007 sparked a huge change in the way light bulbs are manufactured, by focusing largely on the manufacture of incandescent light bulbs. more efficient. Now, when shopping for new incandescent bulbs, the most important thing to consider is the number of lumens, rather than the wattage. To help prevent an electrical fire, it is important for people to make sure that you are not purchasing a bulb that draws more wattage than the fixture will accept. Most lights have a limit of 100 or 150 watts. When it comes to incandescent bulbs or any type of bulb in general, the only thing that has changed over the years is the efficiency of the bulb. Thanks to the shift in energy efficiency from incandescent bulbs, no matter which bulbs people decide to use, they are still able to save money on energy no matter which way they choose.