Monaghan County Council is to write to the Deputy First Minister in Belfast to seek support for the undergrounding of the North-South Interconnector.
It was one of a number of motions recently passed by Cavan and Monaghan County Councils in objection to the project going above ground as planned.
The controversial cross-border pylon line is a standing order on the agenda of both local authorities.
At the most recent meeting in Cavan there were calls for no works to progress until a final independent review on the possibility of undergrounding is carried out.
Meanwhile, David Maxwell called for Monaghan County Council to write to the Sinn Fein leader in Northern Ireland Michelle O'Neill to seek support for undergrounding.
He asked that the Petition of Concern should be invoked to stop the planning on the northern section.
Sinn Fein's Noel Keelan also got support for two motions, one to ask the Government to take a direction that follows community acceptance and a second to question EirGrid's spending on advertising the project.
