ENERGY STAR lighting for your home or office will provide bright warm light but uses about 75% less energy than standard lighting. Energy Star rated lighting will produce 75 percent less heat and lasts up to 10 times longer. The best way to save the most energy and money is to replace the lighting fixtures that you use the most or the light bulbs in them with energy-efficient models. The five most used fixtures in a home are typically the kitchen ceiling lights, the living or family room table and floor lamps, and outdoor porch or post lights.