The independent review into North South Interconnector "will be completed in the coming weeks".
In March of last year, Taoiseach Micheál Martin announced that plans for the controversial powerline would be examined by international consultants.
In a statement to Northern Sound News, a spokesperson for the Department of Environment said work on this review "is well advanced at this stage".
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It continued that it's expected the review will be completed "in the coming weeks".
Local politicians and landowners have opposed the development in its current form of overhead pylons and have repeatedly called on the government to place the high-voltage power lines underground.
