In September 2021, more than a dozen provinces introduced different degrees of power curtailment measures, the tipping point is that the coal price seriously deviates from the break-even point of the power plant, and the more the coal power plant generates, the greater the loss. Driven by the "double carbon" target, the proportion of new energy installed capacity in China has increased, increasing the volatility of the power grid and increasing the peak regulation pressure in various provinces.