The European Commission has launched its Horizon 2020 programme of research funding. Open access remains a core principle, and the model grant agreement describes the expectations for grant recipients.
All peer-reviewed scientific publications relating to results of a project must be made open access, either by publishing in an open access journal (gold OA), or by self-archiving in a repository (green OA). In either case, a 'machine-readable electronic copy of the published version or final peer-reviewed manuscript accepted for publication' should be deposited into a repository for scientific publications. If the researcher chooses 'gold' open access then the deposited final version will be made open access immediately. Where researchers choose 'green' open access, then the manuscript (usually the author's accepted version) should be made open access within 6 months.
For St Andrews authors, the usual mechanism of depositing into PURE will allow the Library to help with making your publication open access. Contact firstname.lastname@example.org for advice.
The Open Access in Horizon 2020 factsheet provides more detail, including information about related research data: https://ec.europa.eu/programmes/horizon2020/sites/horizon2020/files/FactSheet_Open_Access.pdf
The text of the Model Grant Agreement regarding 'Open access to scientific publications' can be found on page 58, section 29.2: http://ec.europa.eu/research/participants/data/ref/h2020/mga/gga/h2020-mga-gga-mono_en.pdf