Drilling for SuedOstLink, Germany

The fully electric driven horizontal drilling rig HDD45-E is currently in operation near Hof. STREICHER is carrying out numerous horizontal drillings in Oberfranken, Oberpfalz and Niederbayern for the SuedOstLink energy transition project until September 2026. The client is TenneT TSO GmbH.

Drilling Hof
Drilling Hof

The scope of services includes a total of 17 locations, each with six wells with drilling lengths between 100 and 400 metres. Four pipes for high-voltage direct current transmission (HVDC) with a diameter of 280 mm each, two pipes for thermal monitoring (50 mm each) and two cable protection pipes (140 mm each) will be installed. Drilling is mainly carried out in loamy and rocky soils. Here, the used fully electric driven horizontal drilling rig HDD45-E is on duty. Developed in-house by STREICHER, the rig impresses with its efficiency and high degree of effectiveness.

The SuedOstLink is a grid expansion project planned as an underground cable connection by the two transmission grid operators TenneT TSO GmbH and 50Hertz GmbH and will be realised with a voltage level of 525 KV (DC voltage). SuedOstLink consists of the two projects 5 and 5a, each with a transmission capacity of 2 gigawatts. The new high-voltage line from Wolmirstedt in Sachsen-Anhalt and Klein Rogahn in Mecklenburg-Vorpommern to the former Isar II nuclear power plant near Landshut stretches over a length of around 750 kilometres and is scheduled to be connected to the grid in 2027 with Project 5 and in 2030 with Project 5a.