sentences:  It can make anemometer readings inaccurate and which, in certain turbine control designs, can cause high structure loads and damage.Some turbine manufacturers offer low-temperature packages at a few percent extra cost, which include internal heaters, different lubricants, and different alloys for structural elements.If the low-temperature interval is combined with a low-wind condition, the wind turbine will require an external supply of power, equivalent to a few percent of its rated power, for internal heating.