China ports pass stress test with about 30% throughput buffer

The stress tests showed ports hold financial stability under sharp volume decline.

China’s port throughput growth will be driven by rising emerging market exports and transshipment over the next three to five years despite ongoing geopolitical volatility, a S&P Global Ratings report said.

The firm said that, despite potential disruption to shipping routes linked to the Middle East war, alongside shifting trade policies and tariffs, Chinese port operators can withstand volatility from these conditions.

Stress tests it conducted revealed that operators could absorb a 25% to 30% decline in throughput in 2026 without breaching financial triggers.

Amidst tensions, China’s coastal ports will also benefit from higher-value cargo linked to electric vehicle and renewable energy supply chains, alongside the consolidation of cargo through major hub ports capable of serving large container vessels.

Coastal container throughput in the country rose 8% year on year in the first quarter of 2026.

S&P Global Ratings said emerging market demand and China’s supply chain integration will support continued export flows, adding that hub ports are positioned to handle cargo redistribution from regional ports.

Shanshan Yang, credit analyst at S&P Global Ratings, said China’s shift towards higher-value manufacturing is changing cargo composition, with growth in electric vehicles and renewable energy exports offsetting declines in sectors such as textiles.