We are discussing underground ac lines, higher maintenance costs, extremely disruptive maintenance restriction on land use and very similar radiative properties.
As regards costs, underground is seven times more expensive, in this case €588 milliom versus €81 million.
http://www.eirgrid.com/media/Compari...s%20Report.pdf
ecoguy, there are some situations where underground is appropriate but this is not one of them, Meath is lovely but an area of outstanding natural beauty, well mmm eh eh it is lovely on a summers day.