The European Commission (EC) and the European Research Council (ERC) oblige funded projects and researchers to publish Open Access in the EU Open Science Policy and in the Horizon 2020 (2014-2020) and Horizon Europe (2021-2027) program guidelines.

An overview of Horizon Europe's framework conditions on the topic of Open Access can be found in the Grant Agreement (cf. p. 108f): Open Access is mandatory for funded research results; journal articles must be published immediately after publication under the Creative Commons CC BY license in a repository listed in OpenDOAR. Open Access publication costs can be funded through project funds, provided that the article is published in an Open Access only journal and meets scientific standards for licensing and the review process.

In addition, Open Research Europe provides funded projects and researchers with a free platform for publishing preprints and conducting open peer review processes.