The document is studying different window energy rating schemes applied in different countries all over the world (USA, Canada, Australia, New Zealand, Great Britain, Finland, Denmark).
Currently, USA, Canada, Australia, New Zealand and Great Britain have adopted systems for energy rating of the fenestration products. Among them, only Australia and New Zealand have taken into account the cooling performance. Finland has launched a pilot program for energy rating window products, while Denmark has developed a labeling scheme for glazing components.