Participants at the EOW2009 conference September 14-16 could learn more about the use of IEC 61400-25. Vattenfall, DONG Energy and Statkraft presented a joint poster about IEC 61400-25 and the user group USE61400-25 at the European Offshore Wind power conference in Stockholm The title was 'Access to key O&M data by use of IEC 61400-25'.