China's Underwater Data Center: How the Future of AI Is Moving Beneath the Ocean

Artificial Intelligence is transforming the world faster than ever before. Every AI model, cloud platform, streaming service, and digital application depends on powerful data centers. However, traditional data centers consume massive amounts of electricity, require large areas of land, and spend enormous energy on cooling systems. To solve these challenges, China has introduced an innovative solution that could redefine the future of digital infrastructure. In May 2026, China officially launched the world's first commercial offshore wind-powered underwater data center near Shanghai's Lingang coast. Located approximately 10 kilometers offshore and 35 meters below sea level, this advanced facility combines renewable energy with underwater engineering to create a highly efficient and environmentally friendly computing center. The project represents an investment of approximately ¥1.6 billion (US$226 million) and was developed through a partnership between Shanghai Lingang Special Area authorities, HiCloud Technology, China Telecom, Shenergy Group, and CCCC Third Harbor Engineering. Unlike conventional data centers built on land, this facility places nearly 2,000 high-performance servers inside specially designed pressure-resistant and corrosion-resistant underwater modules. These sealed containers are engineered to operate safely beneath the ocean while delivering powerful computing performance. One of the biggest advantages of this underwater design is its cooling system. Instead of using large air-conditioning units and consuming freshwater, the data center uses the naturally cold seawater surrounding the modules for passive cooling. This significantly reduces electricity consumption while eliminating the need for freshwater cooling. The facility is powered directly by nearby offshore wind turbines, making it one of the world's first AI computing infrastructures to combine renewable wind energy with underwater natural cooling. Thanks to this design, the project reduces cooling energy consumption by more than 20% and achieves an impressive Power Usage Effectiveness (PUE) of approximately 1.15, making it much more energy efficient than many traditional data centers. The underwater data center was developed in two phases. It began as a 2.3-megawatt demonstration project before expanding toward a 24-megawatt commercial facility capable of supporting large-scale digital workloads. Today, the center supports Artificial Intelligence training, GPU computing, cloud computing, big data analytics, 5G infrastructure, and the development of domestic large language models. China Telecom has already deployed GPU clusters inside the facility to accelerate AI computing capabilities. Beyond improving efficiency, the project also reduces land usage, lowers carbon emissions, minimizes dependence on freshwater resources, and demonstrates how renewable energy can power next-generation computing infrastructure. However, underwater data centers are not without challenges. Engineers must carefully address long-term saltwater corrosion, underwater maintenance, cable reliability, pressure-resistant hardware, marine environmental protection, and operational monitoring. The long-term commercial success of this technology will depend on how effectively these engineering challenges are managed over the coming years. Nevertheless, China's underwater data center represents a significant milestone in the evolution of sustainable computing. As Artificial Intelligence continues to expand globally, demand for cleaner, more efficient, and environmentally responsible infrastructure will continue to grow. This project demonstrates that the future of AI is not only about building smarter algorithms—it is also about building smarter infrastructure. The next generation of data centers may no longer be limited to land. Instead, they could operate beneath the ocean, powered by renewable energy and cooled naturally by the sea. The future of computing has already begun—and part of that future now lies beneath the ocean. Outbro Blog Innovation • Artificial Intelligence • Future Technology • Engineering • Startups • Digital Infrastructure