Donsö Island Cable
OperationalIsland LinkSE24 kV8.5 km2019
Basic information
7 fieldsAlso Known As
Donsö sjökabel · Billdal–Donsö sjökabel
Status
operational
Owners
Project Company
Type
island link
Expected Life
50 years
Website
Supply Chain (3)
Project Timeline (5)
~Sept 2019Commercial Operations Full Power
According to a Nexans Sweden project article on the Billdal–Donsö subsea cable, the first of the two new 8.5 km cables to Donsö was commissioned in March and the second was scheduled to be commissioned after the summer, with the overall reinforcement project to the Gothenburg southern archipelago due for completion in 2020. Given this schedule and the lack of contrary evidence, full commercial operations for the second cable reasonably occurred around early autumn 2019, shortly after summer.
1 Feb 2019Cable Installation Start
In February 2019, installation of the Donsö Island subsea power cable effectively started when two 8.5‑kilometre cables (17 kilometres in total) were pulled out from the Billdal switchyard towards Donsö in Gothenburg’s southern archipelago, laying new subsea cables on the seabed to replace the old, failure‑prone connection and improve electricity reliability for the islands.
1 Feb 2019Cable Installation Complete
In February 2019, two 8.5 km long Nexans AXCLTV 24 kV subsea power cables were laid in parallel from a switchgear near the shore at Billdal, with the first 250 metres installed in pipes through a horizontally drilled hole under the seabed, and then pulled out across the seabed to Donsö in Gothenburg’s southern archipelago, completing the subsea cable installation for the new electricity supply link to the island. This work forms part of Ellevio’s programme to reinforce the reliability of the electricity network to the southern Gothenburg archipelago.
1 Jan 2019Onshore Construction Start
Onshore construction for the Billdal–Donsö subsea cable project began in January 2019, when a 3.6 km cable trench was dug from the Billdal switchyard to the shore at Killingholmen as part of Ellevio’s high‑priority effort to replace the deteriorated existing supply and secure electricity to Donsö and the wider southern Gothenburg archipelago.
Date TBDCable Supplier Selected
Nexans Sweden was selected to supply two 8.5‑kilometre AXCLTV 24 kV subsea power cables for Ellevio’s project connecting Billdal on the mainland to Donsö in Gothenburg’s southern archipelago, providing a more reliable electricity supply to the islands as part of a larger programme to lay 41 kilometres of subsea cable in the area.