The relationship between power plants and power grids is just like the relationship between manufacturers and supermarkets. Products (including electricity) produced by power plants and manufacturers are sent to supermarkets and power grids, and then sold to users by supermarkets and power grids.

Power plants are managed by various group companies, and power grids are monopolized by the state. After the power of the power plant is sent to the power grid, the power grid is sent to all users through lines and substations, and the power grid is responsible for collecting money from users, and then the power plant collects money to generate electricity and the power grid collects money to transmit electricity.

Power plant management does not belong to the power grid, but its production scheduling belongs to the power grid. When the power consumption increases, the power grid informs the power plant to generate more power, and when the power consumption is low, the power grid informs the power plant to generate more power. Because whether the power plant makes money depends on the dispatching of the power grid, the power plant tries its best to please the dispatching.