A wind farm located in the Solway Firth, off the Scottish coast, has produced power for the first time operator E.ON has announced.

The Robin Rigg offshore wind farm, which will have 180MW installed capacity on completion later this year, is made up of 60 turbines that can generate enough power for 120,000 houses and reduce carbon dioxide emissions by 230,000 tons a year.

Almost €400m ($583m) has been invested in the project.

E.ON’s other offshore wind projects include the 200MW Rödsand II wind in Denmark, due to be finished next year and the €250m ($364m) 60MW wind farm alpha ventus in Germany.

E.ON plans to invest €8bn ($11.65bn) in renewable projects up until 2011.