The use of MEG panels to make a shadingsystem is aimed mainly at achieving a reduction in the overheating of buildings in excessively sunny or hot periods. Increases in internal temperatures lead to the use of air conditioning systems, which is an expensive solution subject of much debate, in view of its negative effect on the environment (emission of greenhouse gases).
Usually at the peak of summer the high solar irradiation is mainly blocked by the shading device, which reflects or absorbs it, acting as a barrier against excessive heat.
In winter time the incident light (from the sun that is low on the horizon) is not affected by a sunscreen. The shading in this case is weak be-cause of the space between the slats (if the shading device has been installed in its traditional orientation, with horizontal slats).