How do private electricity sales companies operate now? What can a power dispatcher do when he goes to a private power company?

Sales companies sell electricity to users, and the most important thing is to do marketing. Dispatcher is to maintain the safe operation of power system, which is far from the core business of power sales companies. However, as a special commodity, electricity is different from ordinary commodities in nature. Power selling companies still need someone to understand the knowledge of power system operation and evaluate the impact of power grid failure, maintenance and congestion on power selling.