Transitioning of wind turbine operation

A method for transitioning the operation of a wind turbine into an energy harvesting mode in which the wind turbine operates to generate electrical power from wind energy, wherein an energy storage system associated with the wind turbine is configured to supply electrical power to an auxiliary system of the wind turbine when the wind turbine is not generating or receiving electrical power sufficient for supplying the auxiliary system, wherein the method comprises:

• operating the wind turbine in a first operating mode in which the wind turbine is not generating electrical power from wind energy, wherein in the first operating mode, an electrical power supply to a first group of one or more auxiliary power consumers of the auxiliary system is ceased, and in which a second group of one or more auxiliary power consumers of the auxiliary system is supplied with electrical power from the energy storage system;
• obtaining environmental data including at least one of wind data and meteorological data;
• determining if the obtained environmental data meets a predefined condition, wherein the predefined condition includes at least one of a wind speed threshold, a wind speed range in which the wind turbine is operable to generate electrical power, a wind speed trend threshold, or a predetermined energy threshold for an expected energy generation;
• and
• if the predefined condition is met, causing a transition of the operation of the wind turbine into the energy harvesting mode, wherein transitioning the operation into the energy harvesting mode comprises supplying electrical power from the energy storage system to the one or more auxiliary power consumers of the first group, and
• wherein the predefined condition includes the wind speed trend threshold.