In the KOALA project, consortial solutions for financing open access are being 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 will work with the Communication, Information, Media Centre (KIM) of the University of Konstanz to establish at least one corresponding consortium as a funding partner for open access periodicals. Within this framework, further analyses will be carried out and conversions of periodicals to open access will be accompanied. In addition, a central helpdesk for editors who need help with the transition to open access or with finding sustainable funding will be 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.