The building industry in Denmark and the rest of Europe is facing challenges in fulfilling the EU directive of 2002. New buildings and renovation projects need to improve the energy performance to be able to fulfil the Kyoto agreement from 1998 (Directive 2002). In Denmark it has resulted in new building codes according to energy use, which contains a classification of low energy buildings, which will be strengthened the following 5-10 years. By implementing tighter energy demands and energy labelling for existing buildings the awareness of energy performance groves and the energy performance of buildings become a competitive parameter. For the Danish building industry it means that they are facing new challenges both in developing new intelligent and holistic building concepts but also new challenges for the manufacturer of products.