In new construction, you also have several options. Switch to a higher wattage fixture, install more fixtures of the same wattage, choose fixtures that project light better or some combination of these. In new construction or remodeling you often have several options. You can select the right combination of fixture, lamp and control for each situation. If you start from an existing fixture, your options will be limited to the lamps that will fit or conversion kits.
More efficient lamps are more expensive, too.
Fortunately, you'll save money every time you use them. These products might appear more attractive at first glance. It will pay to look more carefully. That cuts energy use by 15 percent. You also get 15 percent less light.