Although the initial cost of conventional light sources is lower than that of LEDs, the operational costs of LEDs are significantly lower. LEDs have a longer lifespan and lower maintenance and replacement costs. Since LEDs need to be replaced less often, the owner spends less money on new lamps and labour costs needed to replace them. Furthermore, LEDs consume less energy. As a result, the total cost of a LED system can be significantly lower than that of conventional lighting systems.