State Grid Jiaxing optimizes EV charging prices to promote green energy use

In line with China's dual carbon strategy and policies on new energy consumption and optimized power allocation, the State Grid Jiaxing Power Supply Company has introduced a new pricing mechanism to guide electricity use, adopting a "peak shaving and valley filling" strategy to address charging difficulties during peak hours.

At present, electric vehicle charging demand peaks at midday, causing waiting lines at charging stations. To address this issue and improve efficiency during periods of strong solar output, the company has rolled out a new charging tariff. By lowering off-peak charging prices and narrowing the price gap with peak-hour rates, the initiative encourages users to shift charging to low-demand periods, promoting the concept of "new energy vehicles powered by new energy".

According to the company, the new tariff reduces average off-peak charging costs by around 10 percent compared to June and narrows the price gap between off-peak and peak periods to about 38 percent. This adjustment helps shift charging demand from peak hours and lower user costs during off-peak times.

Since the new pricing scheme took effect in July, the results have been notable. Data shows that daily charging activity has shifted entirely from peak hours to periods of high photovoltaic output and low demand, achieving a 100 percent transfer rate and meeting the company's "peak shaving and valley filling" target.

Moving forward, the Jiaxing State Grid intends to continue refining time-based charging prices, using tariffs as a key tool for "virtual power plant" demand response programs. By expanding the scale and application of such programs, the company aims to enhance grid stability, advance green energy transition, and support high-quality energy development in Jiaxing city, Zhejiang province.