Abstract: Via the experiment in the instantaneous load, some quantitative relations is obtained after the dynamic analysis of the economical features such as boiler efficiency, turbine heat rate, the electricity consumption ratio of the power plant, the coal consumption rates for power supply under various load following rates, the amplitude and the fluctuation frequency. This analysis demonstrates that the instantaneous load in 1036MW unit may enhance better operation of the units, reduce the coal consumption rate of power supply and the electricity consumption rates of the power plant. Meanwhile, this paper offers reference for energy savings, emission reductions and regulating modes for the power plant and theoretical basis for relevant power grid enterprises to analyze the benefits of the operation of the instantaneous load so as to enable tens and thousands of units to fulfill the further energy saving and consumption reduction requirements.