Environmental Action Alliance Ireland, a non-governmental environmental organisation, has launched a legal challenge against An Bord Pleanála over the North-South interconnector.The judicial review case was lodged in the High Court on Monday of this week. Last December, An Bord Pleanála gave planning permission to EirGrid for the southern section of the 140km long 400kV overhead power line that will link the electricity grids of Ireland and Northern Ireland.