It’s like any other exchange of electricity between grids, which already takes place within larger countries. You just need to run a cable to create an export g

It’s like any other exchange of electricity between grids, which already takes place within larger countries. You just need to run a cable to create an export grid. Offshore wind farms have to run high voltage marine cables to the shore, for example. It is laid using the same techniques as underwater communication cables - with specialized ships.