TenneT will first conduct a study into smart and innovative yet proven techniques and working methods that will enable the construction work to be completed more quickly. The study is aimed at developing innovative solutions for the pylons, the conductors (i.e. the high-voltage wires), and the performance of work. The results are expected to become available in the summer of 2016.
TenneT has begun to make preparations in order to take the necessary measures once an optimal solution has presented itself. In the winter of 2015/2016, TenneT conducted a number of field studies at the sites of the pylons. By performing these activities, we intend to minimize any damage to crops and harm to local flora and fauna, for instance by taking the breeding seasons of certain bird species into account.
The field studies consisted of soil analyses and cone penetration tests at the pylon sites. The study results are relevant to the performance of the work. TenneT prepares work sites and constructs building site roads for work on pylons and conductors. The detailed lay-out of these sites and roads is determined in part based on the results of the field studies.
Modifications to high-voltage substations
In addition, modifications will be made to the high-voltage substations at Lelystad, Diemen and Ens in order to make them suitable for higher transmission capacities. This requires the replacement of existing components by new ones. TenneT has commissioned field studies into ground water levels, the load-bearing capacity of the soil, and several land management aspects. This approach will minimize the risk of any problems occurring at a later stage, and will enable the area to be restored to its original condition following completion of the work.