Amprion constructed 43km of underground cable for the German section of the first power bridge between Germany and Belgium: the ALEGrO project. To reduce the project’s invasiveness, Amprion created a comprehensive soil management plan and was the first to utilise the innovative “Green construction road” concept on a large scale project.
In order to retain the soil functions, Amprion developed a soil management plan that determines the careful removal and replacement of soil layers in the correct order. For this purpose, Amprion consulted third-party soil experts during the planning and the construction phase. Furthermore, the concept of “Grüne Baustraße” (green construction road) was advanced: Unlike conventional excavating, that requires construction roads to be built on lower B-horizon soil, Amprion built their construction roads on the grassy top soil. This practice prevented soil compaction, reduced soil displacement by around 70,000 m3, and reduced the diesel fuel consumption during the construction work.
Amprion is a German TSO operating from Lower Saxony to the Alps.