What Will The Interaction Between Cars And The Network Bring About?

By the end of 2024, the total number of new energy vehicles in the country reached 31.4 million; the total number of charging infrastructure across the country reached 12.818 million; and there are over 10,000 charging operators of various types. The prospect of new energy vehicles participating in the interaction between vehicles and the power grid is very promising.

For ordinary car owners, using V2G technology to transmit electricity to the power grid can bring "real money" gains and reduce vehicle operating costs. Recently, Mr. Li, a car owner in Guangzhou, Guangdong Province, learned that discharging electricity to the grid can receive a subsidy of 3.5 yuan per kilowatt-hour. He thought it was a good deal and decided to give it a try. Mr. Zhang, a car owner in Wuxi, Jiangsu Province, through multiple participations in discharge activities, had his vehicle discharge a total of 71 kilowatt-hours, and received 7,125 points, which were exchanged for a charging benefit package worth 200 yuan.

Furthermore, the pilot areas will fully implement the peak-valley time-based electricity pricing for charging. They aim to have over 60% of the annual charging volume concentrated in the off-peak hours. Among this, over 80% of the electricity charged through private charging stations will also be concentrated in the off-peak hours. The price difference between peak and off-peak periods for residential charging is expected to further widen, effectively guiding ordinary car owners to charge during off-peak hours and reducing charging costs.
Where does the electricity discharged by the vehicle in reverse go? It is understood that there is a transformer beside the charging station, and the current is directly transmitted to the main urban power grid through the transformer.

For the power grid, "Vehicle-grid interaction can fully leverage the flexibility regulation capabilities of battery power as controllable loads and mobile energy storage, supporting the efficient and economic operation of the new power system, reducing the burden on the power system caused by the large-scale development of electric vehicles, and playing a role in peak shaving, renewable energy absorption, and load fluctuation stabilization." Liu Bowen said.

For charging enterprises, the gains are considerable. "Since last year, we have actively participated in the power trading for absorbing electricity during off-peak hours in Guangxi. The maximum market income we can obtain is 0.6 yuan per kilowatt-hour. For the power stations that consistently participate in absorbing off-peak electricity, if they respond successfully, their yield can increase by 3% to 5%," said a relevant person from Nanning Tielong Electric New Energy Technology Co., Ltd.

For automakers, "the interaction between vehicles and the grid is not only a technological breakthrough, but also a reconfiguration of production relations, driving China's new energy vehicle industry to transform from 'capacity output' to 'system solution provider'." A relevant official from GAC Energy Technology Co., Ltd., a subsidiary of GAC Group, introduced that GAC Group has currently launched 6 models with V2G functions, with sales exceeding 30,000 units.

With the continuous advancement of the pilot program, the market mechanism for vehicle-grid interaction has gradually matured, the threshold for the power market has gradually decreased, and concerns about battery lifespan degradation have gradually been alleviated. New energy vehicles will transform from mere "electricity consumption terminals" to "energy network nodes", and new energy vehicle owners will achieve a role upgrade from "passive electricity consumption" to "active participation in the energy network".