The 48-turbine Fallago Rig development in Berwick shire's Lammermuir Hills drew objections from Scottish Natural Heritage and East Lothian and Scottish Borders Councils over environmental impact concerns.
But Mather said it would play a vital role in meeting the country's climate change targets. "In approving this application I have put in place conditions to protect the outstanding natural habitats and landscapes and minimise disturbance to communities," he said.
Developer North British Wind Power Ltd will contribute £240,000 a year towards local environmental improvements and sustainable development projects. The protest group Say No To Fallago wants a government inquiry into the planning process for wind farms.