HVAC has significant losses, HVDC has less losses and allows power to be transmitted efficiently enough over long distances (guess it depends on what you mean b

HVAC has significant losses, HVDC has less losses and allows power to be transmitted efficiently enough over long distances (guess it depends on what you mean by long). A good example is North Sea link, linking the north of England to the abundant hydropower in Norway, which should come online this year I think. HVDC links connecting European countries of the length 400-600km are becoming quite common, unfortunately subsea cables are prone to failures and can cause a lot of outages etc.