In order to compare the cost and efficiency of different light sources, one has to consider all costs for running a lamp: electricity, maintenance and replacement costs.
The table below provides a comparison of energy efficiency and the total costs for running incandescent light bulbs (such as halogen lamps), fluorescent tubes and LED lights. The comparison is based on the assumptions that an LED lasts for 10 years, while a normal light bulb lasts only for a maximum of 1000 hours.