http://j.people.com.cn/n3/2025/0416/c95952-20302927.html

The National Development and Reform Commission and the National Energy Administration have announced large-scale V2G (electric vehicle to power grid) projects. The projects include 9 cities, including Shanghai, Changzhou, and Guangzhou, and 30 projects, including Beijing’s V2G cooperative control pilot project based on new energy storage.

V2G turns new energy vehicles into “mobile batteries” that transmit electricity to the power grid. With bidirectional charging and discharging (V2G) technology, new energy vehicles can charge during times of low power demand and supply battery power back to the power grid during peak power demand to support power. According to data released by the Ministry of Public Security in January this year, China will have 31.4 million new energy vehicles by the end of 2024. Unregulated large-scale charging by new energy vehicles may bring serious pressure to the supply and demand balance of the power system, making the need for large-scale popularization of V2G all the more evident.

Challenges of widespread adoption are

• Frequent charging and discharging accelerates the aging of batteries.
• The proactiveness of automakers and charging pole operators is still not sufficient. Most new energy vehicles are not yet compatible with reverse power transmission to the power grid, and the number of charging poles that support V2G is very small.