380 kV Connection Modernization in Herrenmoor (lot 5)

380 kV Link Commissioned

In August 2019, Omexom Germany was awarded lot 5 for the construction of a 380 kV link between Emden/Ost and Conneforde. This project involved the modernization of the existing 220 kV connection, enhancing the overall infrastructure. The new 380 kV connection was successfully commissioned in April 2022 by TenneT TSO GmbH and the old connection is currently being rebuilt along its entire length.

Challenge: Marshy Ground in Herrenmoor

A significant portion of the project took place within the Herrenmoor nature reserve, located between the municipalities of Zetel and Westerstede in the district of Friesland. The delicate nature of the marshy ground posed a unique challenge for the project team. Typically, pylons are dismantled on-site and transported via containers; however, this method was unfeasible due to the sensitive terrain.

Helicopter Dismantling to Protect Environment

To minimize environmental impact, the Omexom team had to meticulously prepare for a heliported dismantling operation. Three towers were segmented and removed from the marsh by helicopter to safeguard the nature and wildlife of Herrenmoor. The helicopter operation was not only spectacular to witness but also highly effective in preserving the local ecosystem, showcasing Omexom’s commitment to environmental protection