 Energy-efficient lighting. It is estimated that lighting accounts for about 20% of the total power consumption of the world. Energy-efficient lighting can be a cost-effective and reliable method of energy saving. By simply replacing your home's five most frequently used light fixtures with energy-efficient light bulbs, major savings can be made each year. Traditional incandescent bulbs emit light as a result of being heated, but they consume a lot of energy to produce this light, in which 90% of consumed energy is given off as heat. Energy-efficient light bulbs include CFL or combat fluorescent lamps and LED or light-emitting diode lamps. These energy-efficient light bulbs can use up to 80% less energy than traditional incandescent light bulbs. Moreover, energy-efficient light bulbs also last up to 25 times longer. The initial price of energy-efficient bulbs is higher than traditional incandescent bulbs, but they are more cost-effective in the long run. They last significantly longer than traditional bulbs, so you do not need to be replaced as often. Energy-efficient lighting is necessary to reduce electricity consumption, especially during peak hours and to lower greenhouse emissions. So, to reduce high energy consumption, simply replace traditional incandescent bulbs with energy-efficient bulbs.