[national Energy Administration: encourage wind farms connected to the grid for more than 15 years or a single unit with a capacity of less than 1.5 megawatts to carry out transformation and upgrading] FIFA, in order to promote the transformation, upgrading and decommissioning management of wind farms as a whole, to promote the high-quality development of the wind power industry, the National Energy Administration has studied and formulated the "Wind Farm Transformation, upgrading and decommissioning Management measures" Wind farms that have been connected to the grid for more than 15 years or whose single unit capacity is less than 1.5 megawatts are encouraged to carry out transformation and upgrading. Wind farms whose grid-connected operation has reached the designed service life shall be decommissioned, and after safe operation assessment, they can continue to operate according to the safe operation conditions.