CHONGQING (CQNEWS) -- On August 25, according to the State Grid Chongqing Electric Power Company, it has collaborated with Chongqing Public Transport Group to launch the largest vehicle-to-grid (V2G) interaction application with the most scenarios in Chongqing.

To date, the two parties have organized and guided over 75,800 new energy vehicles to participate in off-peak charging, V2G back discharging, and virtual power plant peak shaving, covering 38 districts and counties in Chongqing, having reduced and shifted loads by approximately 270,000 kW during peak hours, effectively helping the power grid reduce peak loads.

V2G refers to new energy vehicles delivering power back to the charging piles. On the evening of August 24, a total of 120 new energy vehicles at 85 V2G stations (120 piles) across the city participated in the V2G large-scale back discharging pilot application. The scenarios included buses, public stations and office spaces. The discharging lasted for 2 hours, with over 1,700 kWh in total by back discharging, which was enough to meet the electricity needs of more than 420 households for 1 hour.

The V2G pile can both charge the vehicles and support back discharging, turning an electric vehicle into a giant "power bank." Chongqing encourages new energy vehicle users to discharge power back to the grid via V2G piles during periods outside of grid load valleys—when electricity prices are higher—to gain corresponding economic benefits. Back discharging can improve the grid's capabilities of power balance, safety emergency response, providing support for the large-scale application of vehicle-to-grid interactions while reducing power loads.

In addition, State Grid Chongqing Electric Power company uses off-peak electricity pricing policies to guide electric vehicle users to charge during off-peak times, helping the grid shift and avoid peak hours. On August 24, a total of 76,000 new energy vehicles participated in charging during the grid's load valley period, freeing up at most 260,000 kW of load during peak hours. On that day, 88 charging piles also participated in peak clipping activities by the State Grid through the virtual power plant model, reducing load by nearly 10,000 Kw during the peak hours. (Translated by Jane, Fathom Language Limited)