Lighting accounts for about 20% of annual household electricity bills, or approximately $200 per year. The higher the bulb wattage you use, the more electricity that’s needed to make it burn bright and more electricity used means higher energy costs for you. You can save money by switching to energy-efficient lighting. Generally, the most energy-efficient types of home lighting are CFLs and LEDs. Both provide high-quality light, use less energy, and last longer than standard bulbs.