The Guanacaste wind farm, which went online in 2010 and runs Enercon turbines, is part of a package of assets the French group is selling to Celsia as part of a selective divestment strategy.

GDF Suez is also disposing of a hydropower plant, a fuel oil facility and its majority stake in a thermal generation complex.

The utility said the deal, which covers assets in Costa Rica and Panama, will cut about $1bn from its net debt, with the proceeds used to take advantage of  “new opportunities in fast growing countries”.