9. Building: a major contributor to grey energy

Buildings are major energy consumers, both during operation and construction. They also have a significant impact on the environment. In Europe, 75% of the building sector is made up of individual and collective housing . As 40% of these were built before 1960, their energy performance is poor compared to what can be achieved today. The total surface area of the European real estate sector is around 25 billion m ² . In terms of environmental impact, the building sector (doc. European Conference on Substainable...