The paper describes the progress of the main Institutional Repository (IR) of the National Technical University of Athens (NTUA) and its current development. The new challenges presented are the enhancement of the repository with new services and collections. One of the major collections which is under development is the University’s research output. We have already started populating the collection with papers and presentations published by the members of NTUA’s academic community. Our first step was to establish new self-archiving routines for the academic staff and faculty members. This included new forms and directions, to support the deposit of their publications. The essential goal of the IR integration is to gather all of NTUA’s scientific and technical content and simultaneously to provide new, personalized and advanced services.