Privately held AI infrastructure group · Full-stack AI infrastructure, liquid cooling, data centers and GPU services

Submer

Infraday-curated

Barcelona, Spain

Full-stack AI infrastructure group spanning liquid cooling, data-center development, modular systems and GPU services.

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Overview

Submer Group is a Barcelona-based AI infrastructure company covering high-density liquid cooling, data-center design and operations, modular platforms, and GPU services from core facilities to edge locations. Founded in 2015, the group now operates through specialist businesses including Rubix Data Centers, Radian Arc and Corenix. Its portfolio supports sovereign AI programs, immersion and direct liquid cooling, modular data-center delivery, and GPU-as-a-Service. Current initiatives include a planned €1 billion AI data center in Flix, Spain, and carrier-embedded GPU deployments in Asia through Radian Arc partnerships.

Infrastructure sectors

AI infrastructureData centersLiquid coolingGPU cloud and edge computing

Capabilities & services

High-density thermal architecture
Concept design and deployment
Sovereign AI infrastructure
Core-to-edge GPU infrastructure

Immersion and liquid coolingData-center design and operationsModular data-center platformsGPU-as-a-Service and AI-as-a-Service

Profile information

Infraday-curated. Claim status confirms profile management rights and does not imply independent verification.

Last editorial check: 2026-10-10.

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