Recently, 2025 Green and Safe Port Conference—jointly hosted by the China Ports & Harbors Association and Jiangsu Port Group Co., Ltd.—convened in Nanjing. The event brought together leading industry experts and decision-makers to discuss strategic pathways for advancing green port ecosystems and enhancing integrated safety management across the sector.

During the release and awarding ceremony of the national “Green Port” rating results, several major terminals supported in their energy transition by ZG-SPS Shore Power System from Guangzhou Zhiguang Electric Technology Co., Ltd. (hereinafter “Zhiguang Electric Technology”)—including the Huanghua Port Bulk Cargo Area Ore Terminal, Qinhuangdao Port Coal Terminal Phase I and Expansion Project, Coal Terminal Phase II, SDIC Meizhou Bay Port, and Berths 1–6 of the Qinzhou Port Dalanping South Operation Area—were officially recognized with the Four-Star Green Port certification.

When vessels rely on traditional heavy fuel oil generators during berthing, they generate significant sulfur oxides, nitrogen oxides, particulate emissions, and noise pollution. As the drafting organization of China’s industry standard for neutral grounding equipment and a pioneer in high-power power electronics, Zhiguang Electric Technology has spent more than two decades advancing flexible power technologies. Its independently developed ZG-SPS Shore Power System is a key enabler for port decarbonization, providing award-winning terminals with a high-reliability clean energy supply platform and setting a benchmark for green port transformation nationwide

Zhiguang Shore Power System is built on a variable-frequency power supply architecture and integrates nine functional subsystems, delivering optimized end-to-end power supply from grid access to ship interface.

Its multi-pulse phase-shifting rectification technology ensures exceptional power quality, maintaining output voltage harmonics below 3% even without filtering—far surpassing industry benchmarks.

Its seamless ship-to-shore synchronization and switching technology provides one-click 50/60Hz dual-frequency conversion to meet varying vessel requirements. Combined with an intelligent cable management system, the solution significantly reduces shore power connection time and enhances operational efficiency.

Comprehensive electrical protection ensures high operational reliability. Designed for demanding port environments, the system features ten layers of safety protection and precision voltage and frequency regulation, enabling full-capacity stable output under voltage variations between 85% and 115%. This provides vessels with safe, consistent, and zero-emission power.

An intelligent thermal management system supports stable performance across diverse climates. With dual-side power unit layouts and both air-cooled and water-cooled options—enhanced by Zhiguang’s long-established expertise in thermal engineering—the system ensures long-term reliability in complex operating scenarios.

The award-winning terminals span operational scenarios including bulk cargo, coal handling, and container operations. With versatile indoor and outdoor installation configurations and strong environmental adaptability, Zhiguang Shore Power System enables “plug-in upon berthing, zero-emission operations” across all use cases.

From Yingkou Port in Liaoning to Shekou Port in Shenzhen, and from 10,000-TEU container vessels to large cruise liners, Zhiguang’s shore power solutions have been deployed at nearly 300 berths nationwide, delivering routine clean-power support to more than 200 domestic and international vessels.

As China advances toward its national “dual-carbon” objectives, the green transformation of ports has entered a critical acceleration phase. Zhiguang Electric Technology will continue to evolve its shore power system portfolio based on high-power power electronics, supporting ports in achieving “full coverage, zero blind spots” for shoreside power—and contributing to the development of modern ports defined by cleaner air, cleaner water, and cleaner operations.