We are about to start doing that: https://en.wikipedia.org/wiki/Celtic_Interconnector https://en.wikipedia.org/wiki/Celtic_Interconnector But it is in itself f

We are about to start doing that: https://en.wikipedia.org/wiki/Celtic_Interconnector https://en.wikipedia.org/wiki/Celtic_Interconnector But it is in itself fairly non-trivial; HVDC cables that long are difficult.