Energy costs all over the world increase day-by-day, and limited fossil fuel reserves diminish rapidly. Energy consumption expenditures bring important loads to country economies. It is possible to save both individually and nationally, by cost-effectively using energy sources, which are expensive and scarce.

Glass, with large surface areas in buildings, is an important area where energy can be saved. In average, 30% of heat loss from buildings is through windows.

An additional benefit of effectively using energy sources is that, less carbon dioxide is released to the atmosphere as a result of burning. This is a way to control environmental pollution and global heating which damages the balance of the world, too.