“So why should this highly successful national-level policy that could effectively achieve the 100% Open Access objective be an obstacle to a pragmatic approach to Open Science? Because it’s a Green Open Access policy based on the deposit of accepted manuscripts in institutional repositories with widespread embargo periods. Because despite the current and future progresses in enhancing the visibility and discoverability of repository contents, the canonical way to reach a publication for an external stakeholder with little knowledge about the complex scholarly communications landscape (eg Industry) remains and will remain the DOI issued by the publisher. Because a Green OA-based policy does not open the publications sitting behind those DOIs. And because the amount of effort involved in the implementation of the HEFCE policy as it is designed right now is so huge that research libraries lack the physical resources to adopt any other complementary Open Access implementation policy.
Enter Plan S with its highly pragmatic approach to Open Access implementation. Originally strongly based on Gold Open Access, APC payments where needed and deals with the publishers to address the double-dipping issue around hybrid journals, it’s only after considerable pressure has been exerted by the Green Open Access lobby that the zero-embargo Green Open Access policy has found a place in the Plan S implementation guidelines. But with the current scramble for ‘transformative’ deals that will allow most hybrid journals to become eligible under Plan S requirements, the size of the institutional Gold Open Access output pie will only grow in forthcoming years….”