China has begun sea trials of the Ning Yuan Dian Kun, now widely recognized as the world’s largest fully electric container ship—a major milestone for greener short-sea shipping and cleaner port operations.
Built by Jiangxi Jiangxin Shipbuilding, the 10,000-ton vessel left its dock in Hukou County on February 1 after completing initial mooring tests. It is now undergoing performance trials off the coast near Shanghai, with intensive testing scheduled from February 6 through February 13. These evaluations are designed to validate everything from its battery endurance to real-world handling and operational stability at sea.
At 127.8 meters (about 420 feet) long and able to carry 740 TEU, the open-top container ship is designed for high-efficiency feeder work—moving containers between major hubs and regional ports. Power comes from 10 containerized battery packs delivering a combined 19,000 kWh of capacity. That energy feeds two 875 kW permanent magnet motors, allowing the ship to reach speeds of up to 11.5 knots while eliminating direct exhaust emissions during operation.
One of the most practical advantages of the Ning Yuan Dian Kun is its approach to minimizing downtime. The ship can recharge using high-voltage shore power when alongside a dock, but it also supports a faster turnaround option: swapping battery containers for fully charged replacements. This “swap and go” method is especially attractive for short routes where schedules are tight and port time is costly. Supporting its onboard electrical needs, the vessel also features a photovoltaic system that collects solar energy for auxiliary power.
The project isn’t only about electrification—it also pushes forward smarter shipping technology. Trials are set to test the ship’s autonomous navigation capabilities, including route planning and collision avoidance features intended to improve safety and efficiency in busy coastal waters.
Once testing is complete and the vessel is delivered, it will enter service with Ningbo Ocean Shipping Co., Ltd., operating feeder routes connected to the Ningbo-Zhoushan port—one of the world’s busiest port complexes. The Ning Yuan Dian Kun is expected to be the first of two fully electric container ships commissioned by the company, with a sister ship named Ning Yuan Dian Peng planned to follow.
With large-scale batteries, shore-charging and swap-ready energy storage, solar-assisted systems, and autonomous navigation under evaluation, the Ning Yuan Dian Kun signals a meaningful step toward scalable, low-emission coastal cargo transport—especially in high-traffic port regions where cleaner operations can have the biggest impact.
