In the KOALA project, consortial solutions for financing open access were established. Collaborative funding of open access journals and book series by academic libraries is an alternative to the dominant APC model (article processing charges), where articles are paid for individually by authors or their institutions. During the project period, the TIB worked with the Communication, Information, Media Centre (KIM) of the University of Konstanz to establish two consortia as funding partners for open access periodicals. Within this framework, further analyses were carried out and conversions of periodicals to open access were accompanied. In addition, a central point of contact for editors who need help with the transition to open access or with finding sustainable funding was created. The infrastructure created by KOALA enables fair and sustainable financing of quality-assured open access publications. It contributes to removing financial hurdles for authors and thus facilitates participation in open access publications.