Plans for a North-South Interconnector are moving to the next phase of the project.
It follows publication of an independent review by the Government.
This review said it accepts the findings of previous reports, including the 2018 Expert Commission, that the project should proceed as planned as an overhead line.
Electricity grid operator EirGrid said as the project has full planning permission, it will now proceed to "the next phase."
'Full engagement with landowners'
The utility said it will liaise closely with ESB Networks, which will build the Irish portion of the project, and the Commission for the Regulation of Utilities on the next steps.
"There will be full engagement with landowners, local communities and stakeholders along the route as we proceed with the project," EirGrid said.
"The North South Interconnector is critical for the security of electricity supply across the island of Ireland; to support social and economic growth in the Northeast region; and enable Ireland to reach its renewable energy targets," a statement added.
The Department of the Environment has said the Interconnector is now ready to enter the construction phase, and is anticipated to be completed by 2026.
What is the Interconnector?
The project would link the electricity transmission networks of Ireland and Northern Ireland by means of a 138km long, high-capacity interconnector.
The Government has said it will more than double the power transfer between North and South, and is deemed critical to the security of electricity supply across the island.
The inter-connector will also be able to accommodate a high level of renewable energy on the electricity system.
The proposed construction would see 400 pylons built on a route from Meath to Tyrone.
When Eirgrid submitted the plans to An Bord Pleanála, more than 900 objections were lodged.
Landowners and residents raised numerous concerns about the project during a 12-week oral hearing into the development back in 2016.