Energy efficiency

When we speak about energy efficiency we say to the utilization of devices and technologies that they take advantage of the energy, as best as possible, which is the same thing that to have a high yield.
The energy efficiency is a concept increasingly present in the society, and is important because though in general it needs from investments, we will manage to do a more rational use of the resources, diminishing the energy consumption and the associate expenses, at the same time as we reduce the environmental impact.
We can speak about energy efficiency both in the domestic area and in the industrial sector, and it is a concept to bearing in mind when we speak about energy in buildings, or devices that consume energy, as the lighting, boilers or domestic appliances.