Plan S is an initiative for Open Access publishing which is supported by cOAlition S, a group of research funders and research organisations. Plan S requires that, from 2021 onward, publications funded by cOAlition S members must be made Open Access immediately upon publication.
Researchers can make their publications open access either by publishing them in an Open Access journal, making their accepted manuscript available in an Open Access repository, or publishing an Open Access article in a subscription journal under a transformative agreement.
For more information on Plan S, please see our comprehensive guide.