Experiences from the first German EPBD implementations: - Field tests for residentialand non-residential buildings - Certificates for well-known national and international buildings

In preparation of the implementation of the Energy Performanceof Buildings Directive (EPBD) the responsibleGerman Ministry has undertaken several actions includingthe developmentof a new energy performance calculationprocedure for non-residential buildings (DIN V 18599) and two field tests for the certificationof residential and non-residential buildings.This paper presents the main results of the evaluation of the field tests concerning the form and acceptance of the certificate,the necessary expertise of the issuers, the durationof the work, possible simplifications, etc.The second half of the paper deals with experiences made at Fraunhofer Institute of Building Physics with issuing of national and international energy performancecertificates for well-known buildings such as the Berlaymont building (Brussels), several German ministry buildings(Berlin), a high-performance office buildingin China (Shanghai) and two European schools (Brussels).