Positive
Project advancing - milestone achieved
High Impact
Major milestone or critical setback
Konti-Skan 1, a 250 MW, 250 kV HVDC pole using mercury-arc valve converter stations at Stenkullen in Sweden and Vester Hassing in Denmark, entered commercial operation in 1965, establishing the first power interconnection between Sweden and western Denmark across the Kattegat. The link enabled cross-border power exchange between Energinet and Svenska kraftnät’s predecessor systems and became one of the early long-distance submarine HVDC schemes worldwide.