A report by a planning inspector yesterday backed the decision of the council.
A spokesman for the council said: "This is a significant decision because it is the first time for a long time that a planning inspector has backed the council in refusing permission for a wind farm."
He said that a number of appeals in recent years had been won by wind farm developers against the decision of the council to turn down their schemes.
The inspector backed the council because 15 wind farms have already been approved in the surrounding area.
He said that national and local planning policy identified the cumulative impact of a number of schemes as of "critical importance".
Local campaigners, who have fought the scheme, welcomed the decision.