A study by the European Commission has failed to find conclusive proof of a link between pylons and human health risks.
Researched just published said there appears to be no link between cancer and the exposure to electro-magnetic sources.
The study summarises the findings of around 500 academic research projects into the health concerns surrounding pylons.
However, the study warned that it is not yet possible to reach firm conclusions in a number of areas, and said more research is needed.