Norned update

Repair work on the Norned cable has been completed. The 580-kilometre high-voltage connection between Norway and the Netherlands is being prepared for return to operations in the coming weeks. The cable is now expected to return to regular operations on 17 October.

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2 Minutes

Last updated

9/29/2022

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Part of the cable in more degraded state

The investigation of the cable failure that occurred in early May this year has shown that -apart from the repaired section of the cable- another, small section of the cable is in a more degraded state than expected. This means that there is an increased risk of cable failure in the future. Ultimately, replacement of part of the cable connection (about 1.3 kilometers) is necessary to secure the lifetime of the cable.

Operational in winter months

TenneT and Statnett are now assessing measures which can have Norned operational as best as possible during the winter months until a long term solution is in place. Therefore, returning Norned to operations has been postponed until 17 October. Cable experts are meanwhile progressing with their investigation of what has caused the reduced condition of the cable.

Securing long term repair of the cable requires more time. A new part of the cable needs to be produced.

Norned outage background

On 6 May this year, the Norned cable went out of service due to a fault. Investigations revealed that the fault in the cable was in the Dutch section of the cable nearshore and onshore near the land station. During the summer months, work was carried out to repair the cable. This was a complex repair operation due to the specific type of cable of the connection and the position of the cable fault, which required the use of special equipment.