Why Data Centers Float Offshore, Not in Space
▼ Summary
– The severe power demands of AI data centers are prompting innovative solutions, including proposals to place them in space or underwater.
– Startup Aikido plans to submerge a small data center pod off Norway in 2024, powered by a floating offshore wind turbine.
– Offshore data centers offer advantages like direct access to consistent wind power, simplified cooling in cold seawater, and avoidance of local community opposition.
– However, the harsh ocean environment presents challenges, including corrosion from seawater and the need to secure equipment against constant motion.
– Microsoft previously tested a submerged data center with success but ultimately discontinued the project, despite open-sourcing its related patents.
The growing energy demands of artificial intelligence infrastructure are pushing innovators to consider radical locations for data centers, with some even proposing orbital server farms. However, a more practical and immediate solution may lie not in space, but in the ocean. Offshore wind developer Aikido is pioneering this approach, planning to submerge a small demonstration data center off Norway’s coast this year. This unit will be housed within the submerged pods of a floating wind turbine, directly linking computing power to a renewable energy source.
Should this initial test prove successful, the company aims to deploy a significantly larger version off the United Kingdom by 2028. That model would feature a massive 15 to 18 megawatt turbine capable of powering a 10 to 12 megawatt data center. This offshore strategy addresses several critical challenges facing the industry. Proximity to power generation is a primary advantage, eliminating complex and costly transmission lines. Winds over the ocean are also more consistent than on land, and any temporary lulls could be bridged with a modest battery storage system.
Placing these facilities at sea also circumvents opposition from local communities, often referred to as NIMBY groups, who object to the noise, visual impact, and perceived pollution of traditional data centers. Furthermore, the naturally cold seawater provides a straightforward and energy-efficient method for cooling the servers, which is a major operational expense and technical hurdle for land-based facilities. This stands in stark contrast to the extreme cooling challenges an orbital data center would face in the vacuum of space.
While the ocean offers solutions, it introduces its own set of formidable engineering obstacles. The marine environment is notoriously harsh and corrosive. Although submerged servers would be protected from direct wave impact, they would still be subject to constant motion, requiring all equipment to be securely fastened and stabilized. Every component, from the structural container to the power and data cabling, must be specially hardened against saltwater corrosion to ensure long-term reliability and prevent catastrophic failures.
Aikido is not the first to explore this concept. Microsoft initially floated the idea over a decade ago and conducted a notable two-year experiment off the coast of Scotland starting in 2018. Their submerged data hall, filled with inert nitrogen gas, reported a remarkably low failure rate, with only six servers failing out of more than 850. The company even open-sourced related patents in 2021. Despite this technical success, Microsoft ultimately discontinued the project by 2024, highlighting the significant commercial and logistical hurdles that remain for making subsea data centers a widespread reality.
(Source: TechCrunch)
