OpenAIRE welcomes the announcement of the ambitious ‘Plan S’, launched by cOAlition S, a coalition of 11 national funding organisations. This is an important step towards an open and transparent environment for research, where all kinds of research outputs can be openly accessed, linked, enriched and archived. We expect that this initiative will accelerate the transition to Open Access and Open Science, complementing the existing efforts, with the aim of making all publicly funded research publications Open Access by 2020.