SYSTEM AND METHOD FOR HARVESTING ENERGY OF A WIND TURBINE DURING AN OFF-GRID STATE

A method for harvesting energy from one or more internal energy sources of a wind turbine of a wind farm during an off-grid state includes collecting energy from the one or more internal energy sources locally at the wind turbine during the off-grid state. The off-grid state is characterized in that the wind turbine is mechanically and electrically installed at the wind farm but not yet connected to a grid. The method further includes storing at least a portion of the energy in one or more energy storage devices locally at the wind turbine or the wind farm during the off-grid state. Moreover, the method includes using the energy to periodically power one or more electrical power systems used for idle operation or maintenance tasks of the wind turbine during the off-grid state.