Q: At what stage can an ERC winner submit a proposal to the PoC Grant? Can he/she do it before the ending of their current grant? If yes- when will be the earliest time possible?
A: An ERC grantee can submit a PoC proposal once the ERC grant has started until 12 months after ERC project has been finished.
So if a grantee got the grant on January 1st 2014 and the grant last 5 years, he/she will be eligible for a PoC grant since January 1st 2014 until January 1st 2020.