Linxon Wins Twin Substation Contracts as Svenska kraftnät Extends Grid

Linxon has been awarded contracts by Svenska kraftnät to deliver two major substation projects as part of the Gotland Interconnection. The contract includes a new 400/220 kV station on the Swedish mainland and a new 220 kV substation on the island of Gotland.

The Gotland Interconnection is a key investment aimed at connecting the island of Gotland to Sweden’s transmission grid. For over 70 years, Gotland’s electrical grid has been connected to the mainland via HVDC link through the regional grid. With the new power connection, Gotland will become part of Sweden’s national transmission system. The new link will contribute to a more robust electricity supply, meet growing power demand and create better conditions for electrification and continued societal development on the island. The scope includes a new 400/220 kV substation on the Swedish mainland and a new 220 kV substation on the island of Gotland.

Linxon’s assignment include two EPC contracts covering engineering, design, civil and building works, supply and installation of switchgear and associated systems, protection and control equipment, telecommunications, testing, and commissioning. The Misterhult station will be built as a new 400/220 kV substation north of Oskarshamn and will be connected on the 400 kV line between Kimstad and Ekhyddan. The station is also being designed with capacity for future expansion.

In Stenkumla, on the island of Gotland, a new 220 kV substation will be constructed. The station will serve as the connection point on Gotland for the two new AC cable systems and will interface with the regional grid. The substation is likewise being designed to allow for future expansion.

“We are very proud of the confidence placed in us by Svenska kraftnät. This is a strategically important project for Sweden’s future energy infrastructure and an assignment that aligns perfectly with our expertise in delivering complex high-voltage facilities. We look forward to close collaboration with Svenska kraftnät and the project’s other stakeholders to deliver safe, reliable, and sustainable infrastructure for the long term,” says Angel Guijarro, Managing Director of Linxon Europe.

The new AC interconnection complements Gotland’s existing HVDC connection, which is based on technology and deliveries from Hitachi Energy. The original link was commissioned in 1954 as the world’s first commercial HVDC transmission system and has since been expanded and modernised.

The award includes a broad technical scope, with Linxon responsible for the complete substation delivery, from engineering and site preparation through installation, testing and commissioning. The work will be carried out with a strong focus on safety, quality, delivery reliability and coordination between the substations and the other elements of the Gotland Interconnection project.

When the new Gotland Interconnection is completed in 2030, Gotland will be part of the transmission grid and strengthen the island’s power supply, enable increased electricity consumption capacity and create opportunities for future industrial development and continued expansion of renewable power generation.

(Source: Linxon)