Action analysis of nominal power plants on energy saving and emission controlling of power industry

China’s installed generation capacity has exceeded 800 million kilowatts. But for some regions, generation capacity is in short supply with peak load period and is redundancy with valley load period. During peak load period, generation units with high energy consuming and high polluting emission usually are operated, it is not helpful to energy-saving and pollution emission reducing. Nominal power plants can solve this problem. By designing a contract between power supply companies and consumers, consumers with interruptible load can be considered as a nominal power plant. When system’s standby capacity is not enough, the nominal power plant is started up, i.e. part load of consumers will be interrupted, but some price compensation should be given to consumers, and compensation pricing should be helpful to save energy and control emission for power generation, and protect the power supply company’s benefit in the process of buying and selling electricity, and prompt consumers to decrease electricity in peak time. The analysis models based on the purposes above were given, and a theoretical basis for effective operation of nominal power plants was established.