The National Science Centre (NCN) was among 11 national research funding organisations that launched the cOAlition S in 2018.
In April, 2019 NCN announced plans to introduce open science policy, as well as the requirement for data management plan (DMP) and published guidelines for applicants to complete the DMP form in the proposal. See: https://ncn.gov.pl/sites/default/files/pliki/regulaminy/wytyczne_zarzadzanie_danymi_ang.pdf
In February, 2020 members of the Council of the National Science Centre expressed their approval for a new open access policy to publications created as a result of research projects funded entirely or in part from NCN resources. The obligation to ensure open access to published research findings will apply to all projects recommended for funding under calls announced on 16 June 2020. See: https://www.ncn.gov.pl/aktualnosci/2020-02-27-plany-ncn-otwarty-dostep?language=en
In result, Open Access Policy was adopted by Order No 40/2020 of the Director of the National Science Centre of 31 May 2020. As announced on the funder's website: "The Open Access Policy was modelled on the postulates of Plan S and will also be adopted, in a similar form, by other members of cOAlition S. The document enters into force on the day of signing and shall apply to calls announced on 15 June this year and projects based on implementation agreements signed after 1 January 2021". The document provides information on the publication routes compliant with Plan S, as well as cost eligibility, licensing and copyright protection, and additional provisions. See: https://www.ncn.gov.pl/aktualnosci/2020-06-03-wprowadzenie-polityki-otwartego-dostepu?language=en
In July 2020 NCN announced that cOAlition S has developed the Rights Retention Strategy. According to the implementation roadmap, NCN will adopt the strategy from 1 January 2021 (early adopter). See: https://www.ncn.gov.pl/aktualnosci/2020-07-15-kolejny-etap-wdrazania-planu-s?language=en, https://www.coalition-s.org/plan-s-funders-implementation/