Roscommon County Council's refusal of planning permission for two wind turbines near Roscommon Town has been upheld by the higher planning authority.
The appeal was made by applicant Peter Gillooly following the local authority's decision to refuse in January.
The plans have seen a number of attempted applications and alterations in an attempt to construct the turbines.
The newest application called for two bespoke Enercon turbines at Derrane & Roxborough, with a proposed output of 4.9 mega watts.
Under the application, Turbine one would have a hub height of 99 metres and a blade tip height of 168 metres, while Turbine would have a hub height of 81 metres and a blade tip height of 150 metres.
An Bord Pleanala upheld the refusal citing they were not satisfied that the effects of the development can be properly assessed as well as highlighting that limited bird surveying work had been done in the application.