The map on Wikipedia shows several HVDC links exiting Norway: https://en.wikipedia.org/wiki/High-voltage_direct_current https://en.wikipedia.org/wiki/High-volt

The map on Wikipedia shows several HVDC links exiting Norway: https://en.wikipedia.org/wiki/High-voltage_direct_current https://en.wikipedia.org/wiki/High-voltage_direct_current HVDC for long distance power sharing makes sense since it is generally more efficient than HVAC. On land, HVDC is more efficient beyond ~500km, but underwater, HVDC is more efficient beyond ~50km: https://www.electricaldeck.com/2021/08/comparison-between-hvdc-and-hvac-transmission-system.html https://www.electricaldeck.com/2021/08/comparison-between-hv... Beyond the efficiency benefit, HVDC easily handles transfer of power between grids operating at different frequencies. There are also several other benefits documented at that second link.