In Taizhou, Jiangsu province, new charging stations are being strategically constructed alongside existing substations. This approach helps optimize power resource allocation, facilitates efficient station operations, and provides enhanced convenience for EV users.
According to State Grid Taizhou Power Supply Co., the shift toward EVs has seen user participation grow at an annual rate of 50 percent. In response to challenges faced by some users, the company has introduced a dual-station service model. This involves building charging stations on unutilized substation land, thereby sharing space and power resources for more efficient use of existing infrastructure.
This innovative model includes the addition of more power lines to ensure better allocation of electricity and smoother station operation. By integrating with substation distribution resources, these charging facilities can deliver sufficient electric power, allowing the deployment of fast-charging technology and battery-swapping services. Under this system, vehicles can fully recharge within 10-15 minutes or undergo battery replacement in 3-5 minutes.
Unlike scattered, conventional charging points, this new setup leverages the spare capacity of the power grid, reducing the need for new substation construction and enhancing the efficiency of current grid usage.
Despite these advancements, the sector faces challenges, such as insufficient layout, imbalanced infrastructure distribution, outdated technology in older charging stations, inconsistent service quality, and operational disparities, according to Cui Dongshu, secretary-general of the China Passenger Car Association. He noted that many older charging piles deliver only around 100 kWh monthly, underscoring the urgency for infrastructure upgrades. This includes transitioning from low-output AC piles to high-output direct current fast chargers.
Zhou Libo, deputy secretary-general of the China Electricity Council's electric transportation branch, emphasized the need to improve the performance of charging and battery-swapping systems. He highlighted the importance of further research on enhancing the power distribution networks' capacity and the integration of solar power generation, storage, and charging processes.
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