ScottishPower Renewables had been working on plans to deliver the Mynydd Mynyllod Windfarm, near Corwen in North Wales, since 2010.
According to a 2010 report by the developer, the main elements of the scheme included up to 25 turbines and turbine foundations, a fenced substation and switchgear compound, and power cables linking the turbines to a control building.
ScottishPower Renewables said initial development work included detailed technical and environmental studies, as well as a review of grid connection options.
But the developer said following an analysis of these studies it had decided not to progress any further with the project.
It said key issues had been the landscape and visual effects of the proposals, particularly "those associated with any potential grid connection options".
ScottishPower Renewables said it had now decided to not take forward the application - which would have been decided under the regime for determining Nationally Significant Infrastructure Projects (NSIPs) - to the Planning Inspectorate.
It said in a statement: "We are very grateful for the feedback and advice we have received from the very many interested parties during the development of the project.
"We have consulted widely with a range of stakeholders, including county councils, community councils and the Mynydd Mynyllod Community Liaison Panel."