The explosion of vehicle-grid interaction has made new energy vehicle owners "earn money lying down"!

The explosion of vehicle-grid interaction has made new energy vehicle owners “earn money lying down”! Recently, the National Development and Reform Commission and other four departments issued the “Notice on the Announcement of the First Batch of Pilot Projects for Large-Scale Application of Vehicle-grid Interaction”, and included 9 cities including Shanghai, Changzhou, Hefei, Huaibei, Guangzhou, Shenzhen, Haikou, Chongqing, and Kunming, as well as 30 projects such as the “Beijing V2G Vehicle-grid Interaction Coordinated Control Pilot Project Based on New Energy Storage” in the first batch of pilot projects for large-scale application of vehicle-grid interaction. This move marks that my country’s vehicle-grid interaction field has officially entered a new stage of large-scale application. Against the backdrop of the global acceleration of the energy revolution, vehicle-grid interaction technology is becoming an important force in promoting the construction of my country’s new power system and helping to achieve the “dual carbon” goal.With the rapid development of the new energy vehicle industry, by the end of 2024, China’s new energy vehicle ownership has reached 31.4 million, and the total number of charging facilities has reached 12.818 million. The rapid growth of new energy vehicles and charging facilities has brought convenience while also bringing new problems. The centralized charging period is highly overlapped with the peak period of residential electricity consumption, resulting in a continuous expansion of the peak-to-valley difference of the power grid, which has brought great pressure to the operation of the power grid.
In order to solve this problem, vehicle-to-grid (V2G) technology came into being. Vehicle-to-grid interaction uses technical means to achieve two-way energy flow between vehicles and power grids. During peak electricity consumption, vehicles can reversely transfer the electric energy in the battery to the power grid to provide power support; during low electricity consumption, they charge in an orderly manner. Through this orderly charging and reverse discharge technology, vehicle-to-grid interaction can guide the demand for charging and swapping in time and space, effectively improve the utilization efficiency of charging facilities, and smooth the load curve of the power grid. To put it bluntly, the car charges during the low electricity consumption period, and during the peak electricity consumption period, the car sells the excess electricity to the power grid to relieve the pressure of electricity consumption and make some money at the same time, killing two birds with one stone.
In the first batch of pilot cities, various places have shown an active attitude of exploration. At present, Guangzhou has taken advantage of the synergy between the Guangzhou Power Supply Bureau of the Southern Power Grid and GAC Group, and jointly with key scene application units to create a “car + electricity” dual-chain collaborative V2G city-level benchmark demonstration project, striving to achieve commercial scale application of four key scenarios: community private V2G, park unit V2G, bus V2G, and public charging and swapping station V2G. Chongqing has implemented pilot projects in multiple scenarios such as public charging and swapping stations, bus stations, and industrial parks, and has built a total of 201 integrated charging and storage stations, 80 V2G projects, and 104 “unified construction and unified service” intelligent and orderly charging residential communities.
A relevant person in charge of the Chongqing Municipal Economic and Information Commission said that in line with the requirements of this national pilot city, our city will build a high-quality charging infrastructure system with supercharging as the main body and the integration and interaction of new energy vehicles and power grids, and make important progress in the large-scale promotion and application of vehicle-grid integration and interaction. Specifically, five types of special actions will be taken.

Improve the price and demand response mechanism. Optimize the peak-valley time-sharing price system for residents’ charging, and guide private cars to charge in the valley section; expand the charging and discharging price difference and applicable scope, encourage charging and swapping companies to participate in demand response through virtual power plants, and gradually increase the frequency and scale of charging and discharging load participation in response.
Aggregate participation in electricity market transactions. Establish and improve the aggregation of vehicle-grid interactive resources to participate in auxiliary services and spot market transactions; promote high-quality charging and swapping companies to become virtual power plant operators and expand the scope of market participation; rely on the first batch of virtual power plant operation and management centers in China to enhance the enthusiasm of virtual power plant operators to aggregate charging and swapping load resources.
Comprehensively promote intelligent and orderly charging. Establish an intelligent and orderly charging management system, give priority to the intelligent transformation of existing charging piles such as bus stations and public charging stations, and promote the “unified construction and unified service” of residential communities to achieve full coverage of intelligent and orderly charging functions of public charging stations.
Collaborative innovation of V2G technology and model. Accelerate the establishment of a local standard system for vehicle-grid interaction and improve testing and certification capabilities; support car companies to develop and promote practical models with V2G functions, encourage power grids and charging and swapping companies to develop and apply mobile V2G piles; actively promote integrated demonstration stations for photovoltaic storage, charging, inspection and discharge.
Strengthen platform supervision support. Give full play to the comprehensive analysis advantages of the digital monitoring platform for vehicles and piles, make good use of functions such as APP map to find piles and one-click pile appointments, and realize new load perception, monitoring and evaluation functions such as supercharging, two-way charging and discharging, and intelligent order.
With the explosion of vehicle-grid interaction, new energy vehicles are mainly “lying and making money”! There are still many difficulties to overcome in the large-scale promotion of vehicle-grid interaction. Technically, high-frequency charging and discharging is a test for the cycle life and safety of power batteries, and the communication protocols and data interfaces of different manufacturers are not unified, which affects the efficiency of vehicle-pile-grid coordination. In terms of standards, vehicle-grid interaction involves multiple industries. At present, there is a gap in the standard system. The vehicle-grid interaction function has not been included in the mandatory standards for new energy vehicles and charging facilities, and the power grid connection and metering rules have not fully considered the needs of two-way charging and discharging. Some car owners also have concerns, worrying that the benefits of discharging are not worthwhile and that it will affect the health of the battery.