ECOLED is an online software that can be used by any device connected to Internet (smartphones, tablets or PCs) with which is possible to calculate the payback coming from the replacement of traditional lighting luminaires with LED luminaries . The program consists of several "step" choices in order to define: the size of the environment, the quantity and type of lighting devices and the required lighting level. Based on this data, the program proposes the LED alternative to traditional luminaires to maintain the same number of luminaires and the same lighting level in the environment. At the end of the calculation, you can export the documentation including the material list and the payback.