Preventing collisions

Written by  Thursday, 12 February 2015 01:00

Preventing collisions

In order to protect birds from collisions into electrical power lines and preventing collisions we organise specialized monitoring. Research has been carried out on nearly eight thousand overhead electrical lines type 22kV and 110kV, in order to identify the most dangerous sections from a collisions point of view. Thereafter, ecologisation of these sections will be done through the installation of bird flight diverters. We expect that within a range of about 80km, birds will be protected against collisions due to monitoring. It is important that through the monitoring, high risk power lines will be identified. Targeted, systematic monitoring ensures effective use of funds for ecologisation and conservation of birds. Energy companies will provide financial contribution for the purpose of co-financing the project.

In addition, at least 500 trees will be planted for the purpose of revitalizing the existing wind breaks, or creating new ones, since such vegetation can increase the visibility of electric lines for birds and limit such collisions. Environmental aspect convenient vegetation follows that the closer the vegetation is situated to the potentially risky power lines, the greater the chance that the birds over flight not only vegetation, but also power lines in neighborhood. Trees will be planted corresponding to species composition and conditions of the local environment.

The creation of the conception of solving the problem of dangerous power lines vs. birds will be in cooperation with Slovak Energy companies, Nature Conservancy organisations and the Ministry of Environment. They will be supporting the project and will contribute to the goal.



More information covering the period from 1st July 2018 you can find  in Project results here.


Project results covering the period from 1st September 2014 to 30th June 2018:

  •  Distribution network of power lines has various forms of negative impact on different bird species. The network of power lines in Slovakia is about 35 thousand kilometers. Under the LIFE Energy project we trained 81 field assistants who carried out a survey of almost 7 thousand kilometers of power lines in 13 Special Protected areas. During this survey the field assistants have walked 30 thousand kilometers in 15 months.

  • In total, 4364 bird carcasses (determined to 86 species) have been recorded. Only 2,6 % of all power lines inspected represent the highest risk of collisions. Three electric companies are installing over 8 thousand pieces of four types of bird flight diverters on the most dangerous parts in the length of 82 kilometers. Until 30th June 2018 52 km of 22 kV power lines were treated ; 33 km in Western Slovakia by ZSD and 19 km in Eastern Slovakia by VSD. 7 km of 110 kV power lines were treated in Eastern Slovakia by VSD. Another power lines were treated by a non-beneficiary Electric Company, the SSE-D, based on the Mitigation plans prepared for a project area SPA Poiplie. The diverters were installed on shield wire on 5 km of 110 kV power line. 3 types (RIBE lamelas,Orange Spiral, FireFly Bird Diverter) of diverters are used by ZSD, 2 types (Orange Spiral, FireFly Bird Diverter) by VSD.

  • By these measures we protect over 600 birds in the social value 1,5 million euro from collisions each year. For installation of the diverters those parts of power lines were selected evaluated as most dangerous based on methodology and based on field survey. As a basic document for Electric Companies Mitigation plans were prepared, consulted and used for each of the 13 project SPAs. We collect data about how the birds react and if or where the collisions persist. All power lines treated by diverters are under systematic survey. The efficiency of three types of diverters installed appears to be almost 100% so far. The visibility of markers was confirmed also by birds – they change the flight line much earlier than in case of an unmarked power lines.

  • The database designed under the project is updated regularly; all data gathered are collected in here. A special output from the database was prepared in a unique form (as an ArcGIS story map) and is promoted via project web page here. The database includes 4563 recordings since start of the project.

  • 550 trees were planted based on Mitigation plans: 250 near municipality Jakubov, 240 trees were planted in Lipové and 60 in Bodza. All trees were planted on the most dangerous sites concerning the risk of collisions to support the effect of diverters installed under action C1. The most grown trees were purchased as possible based on budgeted amount and concerning the survival rate in different categories.

Lucia Deutschová

manažérka projektu

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