[d6e]

Run an underwater hvdc line like the uk does

[throwawaymaths]

Sounds expensive

[nicoburns]

I believe underwater lines are typically not that expensive (compared to other major energy generation/transmission projects). It's actually much easier to lay a cable in water (just drop it in) that it is over land (where you either have to construct pylons or dig a trench).

[KaiserPro]

so is having more generation capacity to overcome the lack of power interlink