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

Previously, charging demand for electric vehicles peaked at midday, creating long queues at charging stations. To address this issue, while also improving 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 gap with peak-hour prices, the initiative encourages users to shift charging to low-demand periods — realizing 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 with June, while the price gap between off-peak and peak periods has been narrowed to about 38 percent. This adjustment not only diverts charging demand from peak hours but also lowers user costs during off-peak times.

Since the new pricing scheme took effect in July, the results have been notable. Data show that daily charging activity has shifted 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.

The State Grid Jiaxing Power Supply Company 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 improve grid stability, advance the green energy transition, and support the high-quality energy development of Zhejiang province.