Biotope management in transmission routes

The installations of Amprion GmbH are the company's calling card. That's why the company places special value on ecologically optimum transmission route maintenance - especially for lines passing through woods and forests.

Amprion GmbH is the first network operator to have developed a method with which ecological and economic goals share equal rights and can be implemented to their mutual benefit. We call this Biotope Management - Planning in Power Line Routes.

As far as is technically possible, the following goals are aimed at:

  • Consideration for local characteristics
  • Promotion of nature conservation goals
  • Improvement of the appearance of the landscape
  • Conservation of the plant varieties occurring naturally
  • Promotion of long-term stable biotope structures

By their very nature, these goals require long-term thinking for optimum realisation. Our Biotope Management Planning is focussed on that.

Based on an assessment of the habitat potential in the route by means of biotope type mapping, the required conservation actions are established per type, scope and timing for a period of ten years. This is done in close and trusting collaboration with the land's owner, with the forestry and nature conservation authorities and associations.

With this form of power line route conservation, Amprion GmbH is making a significant contribution to the conservation and development of habitats adequate to nature.

Fig. 1: Creation of stable forest peripheries among frail stocks

In the entire area of the normal strip, one must ensure that both the resting conductor cable (1) (conductor cable temperature 80°C + stretching value) as well as the swinging conductor (2) (conductor temperature 40°C) have an adequate safety clearance. In the area of the forest protection strip, no peripheral tree - on reaching its fully grown height - may endanger pylons or conductor cables. To limit the fully grown heights, a promotion of forestry structures is often appropriate. Such a forest periphery is also ecologically of great significance.


Fig. 2: Exploitation of existing stable forest peripheries

The same criteria as above also apply here. When planning new lines, Amprion GmbH examines, in close collaboration with the forest's owner and the forestry authorities, how far stable forest peripheries can be taken into account when planning lines running through forests to minimise tree losses. Along the borders of forest and field, using stable forest peripheries can achieve optimum integration of the line into the landscape without having to fell trees.