“The National Library of Luxembourg has a consortial section1 which is planning to transition its agreements to the new realities of Open Access. The past years have been spent setting up an integrated administrative structure that allows for flexible shifting of costs and devising entirely new models. We envision the transition to play on two levels: 1. Our subscriptions contain more and more Open Access content, hence the subscription costs should fall proportionally, the “Transition credit”; 2. Our consortial partners pay increasing amounts for Open Access publications, these costs should be covered by the savings of the subscription part. Goals for transition agreements: 1. Transparent and sustainable for both publishers and libraries 2. Long term commitment (3-5 years) 3. Data-driven…”