Konti-Skan 1
Cross BorderOperational357.5 MW285 kV150 km1965
Also known as:Kontiskan 1, Kontiskan-1, KontiSkan 1
Status:Operational
Capacity:357.5 MW
Type:cross border
Website:www.svk.se
Konti‑Skan 1 (often written Kontiskan 1 or KS1) is one pole of the bipolar HVDC Konti‑Skan interconnector between western Denmark (DK1) and south‑west Sweden (SE3). The link connects the Danish converter station near Vester Hassing (Jutland) and the Swedish converter station in the Lindome/Gothenburg area and crosses the Kattegat using...
Supply Chain (7)
Project Timeline (17)
24 Jul 2025Major Outage
On 24 July 2025, Svenska kraftnät reported that the KontiSkan 1 HVDC interconnection between southwest Sweden and Jutland, Denmark, had been disconnected, resulting in a significant outage of the link’s transmission capability.
6 Feb 2025Regulatory Other
Licence: Appendix to System Operation Agreement on joint operation of Konti-Skan 1 and 2 DC links
ENTSO-E published an appendix to the System Operation Agreement detailing joint operation arrangements for the Konti-Skan 1 and 2 DC links between western Denmark (DK1) and Sweden (SE3), specifying that operation monitoring and control are carried out from Energinet’s control centres at Erritsø or Vester Hassing and Svenska kraftnät’s operations centre at Sundbyberg, with Konti-Skan 1 and 2 normally operated in bipolar mode but each capable of monopolar operation. This document formalises operational rules for the existing Konti-Skan 1 pole as part of the binational interconnector.
20 Jan 2025Financial Other
As part of the Konti-Skan Connect renewal project to replace the ageing Konti-Skan 1 and 2 HVDC links between Lindome (SE3) and Vester Hassing (DK1), Svenska kraftnät states that the investment costs will be shared equally with Energinet, and provisionally estimates its own share at SEK 6,500 million as of the latest project update on 20 January 2025.
kr6,500M
2019Operations Other
In 2019, Hitachi Energy completed an upgrade of the control and protection system for the KontiSkan HVDC link, implementing its MACH modular advanced control technology to modernize operation of both poles, including Konti-Skan 1.
31 Aug 2016Inspection Survey
By 31 August 2016, Clinton Marine Survey had conducted a cable tracking and inspection campaign on the Konti-Skan HVDC link, including ROV video, multibeam, and sidescan sonar surveys along the cables between Lindome in Sweden and Läsö in Denmark, as part of operational integrity checks on the Konti-Skan 1 and 2 systems owned by Svenska kraftnät.
Sept 2015Major Maintenance
In September 2015, the operators of the Konti-Skan 1 HVDC interconnector carried out the link’s scheduled annual maintenance, temporarily reducing availability while essential planned works were executed on the system.
24 Apr 2015System Restoration
Following a prolonged outage caused by a transformer failure that began in November 2014, the Konti-Skan 1 HVDC link between Sweden and Denmark was restored to operation on 24 April 2015 when the disturbance period ended and normal transmission capability resumed.
Nov 2014Major Outage
A major outage occurred on the Konti-Skan 1 HVDC interconnector starting in November 2014 when a transformer failure on the Swedish side took the link out of service, significantly reducing its available technical capacity until repairs were completed the following April.
2008Onss Commissioned
In 2008, the renovated thyristor-based converter stations for Konti-Skan 1 at Vester Hassing (Denmark) and Lindome (Sweden) were commissioned, replacing the ageing mercury-arc equipment and increasing Konti-Skan 1’s rated monopolar capacity to 370 MW.
15 Aug 2006Decommissioning Complete
On 15 August 2006, the original mercury-arc valve converter scheme of the Konti-Skan 1 pole between Sweden and Denmark was taken out of operation and disconnected, marking the end of its operational life and its replacement by new thyristor-based converter equipment rated at 350 MW.