After investigation and statistics, it is concluded that the electricity consumption from 8: 00 to 22: 00 is relatively large, which is called "peak"; From 22: 00 to 8: 00 the next day, the electricity consumption is small, which is called "valley". This is easy to understand. During the day, factories and companies are working, and at night, household electricity consumption is high, while everyone is resting in the middle of the night, so the electricity consumption naturally decreases.

In order to balance the electricity consumption within 24 hours, encourage the use of less electricity during the day and more electricity at night, the peak-valley electricity price has been set up. Compared with the unified electricity price, the peak-hour electricity price is higher than the unified electricity price, and the valley-hour electricity price is lower than the unified electricity price.

Significance of peak-valley electricity price

The significance of peak-valley electricity price is to encourage residents to use the preferential conditions of low-valley electricity price to consume a large number of low-valley electricity, such as electric water heaters, air conditioners and other electrical equipment.

At the same time, for the power sector, moving the peak power consumption to the trough period not only alleviates the gap between supply and demand of peak power, but also promotes the optimal allocation of power resources, which is a win-win strategy of "cutting peaks and filling valleys".