Erhorn-Kluttig, H.H.Erhorn-KluttigErhorn, H.H.Erhorn2022-03-152022-03-152008https://publica.fraunhofer.de/handle/publica/413718Demonstration of the successful realisation of building concepts that go beyond the national energy performance requirements is an important instrument to set the path for enforced regulations. Besides many programmes and projects that exist in the different EU Member States, the European Commission has created their own programme for demonstrating new and retrofitted buildings with very low energy consumptions: The Ecobuildings Programme.en690internet contribution