A windfarm (1000) comprising a plurality of wind turbines (100, 110), an ice detection sensor (200) adapted to detect an icing condition of at least one of said plurality of wind turbines (100, 110), and a main controller (300) connected to said ice detection sensor (200) and to at least two of said wind turbines (100, 110), wherein the main controller (300) is adapted to control the operation of said at least two wind turbines (100, 110) based on an icing condition detected by said ice detection sensor (200).