What does Submer do in data center cooling?
A liquid-cooling and data-center infrastructure company working across immersion, direct liquid cooling, modular systems, and facility design.
Company profile • Company
Submer
A liquid-cooling and data-center infrastructure company working across immersion, direct liquid cooling, modular systems, and facility design.
immersionfacility designAI factoriesEurope
Company brief
What Submer does
A liquid-cooling and data-center infrastructure company working across immersion, direct liquid cooling, modular systems, and facility design. This profile tracks its cooling technologies, equipment, products, projects, and source-backed company activity.
Visit company website- Headquarters
- Barcelona, Spain
- Founded
- 2015
- Ownership
- Private
- Market listing
- Not publicly listed
Connected records
Cooling technologies
Technology
Single-phase immersion cooling
Servers operate submerged in a dielectric liquid that remains in the liquid phase while carrying heat to a heat exchanger.
Scaling · Often deployed from 50–200+ kW per tank
Technology
Direct-to-chip liquid cooling
A liquid loop moves heat from processor-mounted cold plates to a CDU and then to facility heat rejection.
Scaling · Commonly selected for 50–150+ kW AI racks
Technology
Hybrid air and liquid cooling
A facility combines liquid capture at high-heat components with air cooling for the rest of the rack.
Scaling · Broadly applicable from 30–150+ kW racks
Connected records
Tracked products
Connected records
Equipment categories
Equipment category
Immersion cooling tanks
Fluid vessels, power distribution, networking, and heat exchange assembled to operate submerged computing hardware.
5 tracked suppliers
Equipment category
Coolant distribution units
CDUs control flow, pressure, temperature, water quality, and heat exchange between facility and technology cooling loops.
5 tracked suppliers
Connected records
Deployments and contracts
Deployment
Submer Barcelona AI data center
Submer announced a 56 MW owned and operated liquid-cooled data center in Barcelona as a showcase for its facility platform.
Barcelona, Spain · Planned
Deployment
Madhya Pradesh–Submer AI capacity program
The Government of Madhya Pradesh and Submer signed an MoU covering up to 1 GW of liquid-cooled, AI-ready data-center capacity.
Madhya Pradesh, India · Planned
Deployment
Stellium OCP immersion proof of concept
Stellium Data Centres, Circle B, and Submer assembled an OCP-aligned immersion-cooling proof of concept.
Newcastle, United Kingdom · Pilot
Evidence ledger
Primary sources
Profiles distinguish company-reported claims from confirmed operating data. Open the original materials before relying on a specification.
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Direct answers
Frequently asked questions
Concise answers generated from the structured record and its cited evidence.
Which cooling technologies does Submer support?
Submer is connected to Single Phase Immersion, Direct To Chip, Hybrid Cooling in the DataCenterChill database. Confirm support for a specific server, fluid, and operating condition with the company.
Where is Submer headquartered?
Submer is headquartered in Barcelona, Spain. This profile was last source-checked on August 8, 2026.