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 08 August 2007
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Electro-magnetic Interference

  • Onshore
  • EMI consultees

Onshore

Onshore wind turbines can cause electro-magnetic interference (EMI) in two ways:

  • Physical interference ‘scattering’ signals can lead to a phenomenon called ‘ghosting’ on television screens.
  • Electrical interference, caused by signals generated within wind turbines, can cause interference to communications equipment.

The main problem has been physical interference with television reception. Where this is an issue, developers are frequently required to enter into legally binding agreements to rectify any problems. In the majority of cases developers have been able to remove the interference.

The effects caused by electrical interference are considered to be negligible due to the standards to which wind turbine construction has to comply.

EMI consultees

The following organisations are consulted to help assess the potential for EMI as a result of wind energy proposals:

  • Defence Estates Organisation
  • Civil Aviation Authority
  • Ofcom
  • National Air Traffic Services
  • Channel 5
  • Independent Television Commission
  • Cable & Wireless
  • ntl
  • Crown Castle
  • BT Radio Solutions
  • Vodafone
  • one2one
  • BBC
  • Scottish Executive Emergency Communications
  • Radio Safety Maritime and Coastguard Agency
  • Northern Lighthouse Board.

SDC Report

The Sustainable Development Commission (SDC) report, Wind Power in the UK: The Facts was launched in May 2005. Full details of their findings on electromagnetic interference can be viewed in this report.

© Crown copyright 2007