Major Outage

In February 2024 Viking Link suffered a forced outage caused by a fire in the ventilation system for the cable sealing at the Revsing converter station in southern Jutland, Denmark. The outage lasted four days and removed cross-border transfer capability between Great Britain and Denmark for the duration. ENTSO-E recorded the disturbance as the single largest unplanned outage on Viking Link in 2024, with 76.0 GWh of unavailable technical capacity attributable to disturbance outages in February — equivalent to 16% of monthly capacity for the month, dwarfing all other minor disturbances combined. The incident was the most significant unplanned interruption on the link in its first full year of commercial operation. The cable sealing ventilation system is part of the converter station's HVDC cable termination infrastructure rather than the offshore cable itself, so no subsea cable repair was required and the link was restored once the converter-station fault was rectified. ENTSO-E classified the event as a disturbance outage rather than a maintenance or limitation event in its 2024 HVDC Utilisation and Availability Statistics.