Coillte are appealing against the decision to refuse planning permission for a wind farm on Mount Leinster.
Carlow County Council last month decided against allowing the proposed Croaghaun development go ahead.
The local authority claimed the plans would have an adverse visual impact on the scenic area and would interfere with the character of the landscape.
They also raised concerns over the effect on the nearby conservation area and the local road network and decided it was contrary to the proper planning and sustainable development of the area.
Coillte has now lodged an appeal against the ruling.