Under Maximum Power Point Tracking (MPPT) control, the wind turbine has no power reserve, which tends to have a large impact on system stability when system supply and demand change. A variable utilization level (UL) scheme is proposed for a wind power plant (WPP) to fulfill the dispatch order while reducing the loss of wind energy and improving wind energy efficiency. Considering the weak effects of a wind farm, the proposed scheme controls the active power output for each wind turbine (WT) according to its utilization level (UL), which is adaptively adjusted according to WT rotor speed. When the turbine speed is higher, the wind turbine utilization level is higher; when the turbine speed is lower, the wind turbine utilization level is lower. Thereby the wind farm can store more rotational kinetic energy that can be released back into the system when needed. The proposed variable UL strategy is fully investigated in a doubly fed induction generator (DFIG)-based WPP and the results show that the proposed control strategy has better energy efficiency than the conventional equal UL while meeting the dispatch demand. This work is supported by the Science and Technology Project of China Southern Power Grid Co., Ltd. (No. GDKJXM20198256).