The highest recorded life of light sources belongs to the projector or LED products, which is about 50,000 hours which has been improved to 100,000 hours, i.e. twice, in PMPLE technology; In fact, supply & Maintenance cost has reduced to zero in PMPLE.
Used voltage in PMPLE is very low and it is interesting that PMPLE projectors will illuminate with a small amount of their rated voltage and it can be fed with the weakest and the smallest batteries. Therefore,it can be fed without any needs to connect to the overall network, and just by connection to direct batteries and cells and even clean energy which somehow has removed the peak and valley problems of the network load. Also the construction cost of electric power plants in impassable places and far-distances has been reduced.