World’s First Undersea Data Center Powered by Offshore Wind Goes Live Off Shanghai
June 1, 2026
World’s First Undersea Data Center Powered by Offshore Wind Goes Live Off Shanghai
Chinese engineers have completed construction and switched on the world’s first underwater data center (UDC) powered by offshore wind turbines, marking a major milestone in sustainable computing infrastructure. Located off the coast of Shanghai in the Lin-hang Special Area, the facility was officially activated in late May, just over seven months after the completion of phase one of the mega-project.
Unlike traditional data centers that rely heavily on freshwater for cooling and occupy vast tracts of land, this underwater facility eliminates the need for freshwater and reduces land use by more than 90% compared to above-ground centers. Instead of using freshwater, the UDC employs a sealed copper-pipe heat exchange system that transfers heat directly into the surrounding ocean, which serves as a natural heat sink. This approach reportedly cuts electricity consumption by 22.8%.
The center, built by a subsidiary of China Communications Construction, currently operates at 2.3 MW but has a planned capacity of 24 MW—enough to power approximately 20,000 households. Offshore wind farms are estimated to generate 95% of the electricity needed to run its 192 server racks, which are distributed across four levels, significantly reducing dependence on existing power grids. Tsinghua University Professor Li Zhen told China Daily, “For an undersea data center of the same scale, the electricity used for cooling would only account for about one-tenth of total power consumption. If data centers of the same scale were placed underwater, even allowing extra margins, cooling consumption could fall to around 30-billion kW. That would save about 50 billion kWh of electricity each year.”
While the project represents a technological breakthrough, underwater computing at commercial scale remains largely untested. Questions persist about the long-term durability of such facilities and the ecological impact of continuously releasing heat into local marine environments. However, as global tech companies race to meet surging demand for compute capacity—including exploring space-based data centers—China’s UDC could serve as a critical real-world test case in the AI era, revealing whether moving computing infrastructure into new environments can alleviate existing land-based challenges or introduce entirely new ones.
Source: newatlas
