How long it takes for Europe to achieve this outcome is a capital investment and deployment velocity decision. The capital exists, the technology and manufacturing capacity exists. How competitive does Europe want to be from a manufacturing perspective? The answer to that is the speed at which they drive down energy costs using the various technologies I've enumerated.
I've reached out to an Ember contact to inquire if they could communicate this time window and velocity in some fashion on their graphs for Europe ("time to historical energy price levels via energy transition").