Protesters have won an eight-year campaign to prevent a small wind farm from being built in south Powys.
Plans for three turbines standing at 91m (298ft) in an area known as Pentre Tump, near Presteigne, were rejected at a special planning meeting.
The original application was submitted in 2002, and Powys council turned down the development in Llanfihangel-nant-Melan on a number of issues.
Applicant Cornwall Light and Power said it was "naturally disappointed".
The council said it would have an "unacceptable adverse impact on the public rights of way network" and a "visual impact" on the surrounding area and landscape.
There were 979 letters and e-mails, and three petitions with 302 names objecting to the proposals.
But the council also received 58 letters of support for the project.
Cornwall Light and Power development manager Bob Morgan said: "We are naturally disappointed by the committee decision and will await the formal notice from Powys County Council before deciding what action to take.
"However, we continue to believe that Pentre Tump is one of the best sites in Powys for a renewable energy project of this type.
"The scheme would deliver significant benefits, not least in providing clean, emissions-free electricity to power the equivalent of all homes within the boundaries of the three local community councils and many more elsewhere in Powys."