The islands need connections to have a stable grid. Crete for example has maxed out its capacity to produce from renewables and needed new cables to export to the mainland. For this reason it still runs an oil plant. Islands in general are a very hard case for renewables.

The project that is meant to "poke turkey in the eye" is the EuroMed gas pipeline which is a different project.

But to be fair, turkey is welcome to join both forums, although this will probably mean that they will have to accept the application of international law in their maritime borders