What Submer does

Submer Technologies S.L. is a Barcelona-based full-stack AI datacenter infrastructure provider founded in 2015, specializing in single-phase immersion cooling technology for high-density compute environments supporting AI training and inference workloads. The company's core technology centers on its proprietary SmartCoolant dielectric fluid and the SmartPod product line (EVO for plug-and-play deployment at 140 kW+, EXO for extreme density at 361 kW, and MicroPod for edge deployment at 7 kW), complemented by the Forced Convection Heat Sink (FCHS) co-developed with Intel to cool processors exceeding 1000W TDP. Through its InferX subsidiary (spun off October 2025 as an NVIDIA Cloud Partner) and the February 2026 acquisition of Radian Arc Operations, Submer has extended from cooling hardware into GPU-as-a-Service, sovereign AI cloud, and telco-edge compute, while also launching Rubix Data Centers in June 2026 with an 8GW powered land portfolio. The company reports sub-1.1 PUE performance and zero direct water consumption across its deployed base of 300-500MW+.

Submer serves enterprise customers across AI infrastructure operators, telecommunications carriers, governments, and high-performance computing organizations, with named customers and partners including CleanSpark, Anant Raj Limited, Telefónica, VNPT, GTPL Broadband, TeleIndia Datacentre, the Government of Madhya Pradesh, and PeaSoup. The company distributes through direct enterprise sales targeting hyperscalers and governments, supplemented by regional channel partners including Hammer Distribution and Boston Ltd in the UK. Revenue is generated through three primary streams: liquid cooling hardware sales (SmartPod systems, CDU units, rack infrastructure), datacenter Design & Build services for modular AI-ready facilities, and managed AI cloud services through InferX. The company operates offices in Barcelona (global headquarters and R&D), Houston (North American operations and Gigafactory, opened November 2024), and Taipei (APAC), and has cumulatively raised approximately $127 million in venture funding, including a $55.5 million Series C led by M&G Investments at a valuation of approximately $500 million in October 2024.

Name

Submer

Legal name

Submer Technologies S.L.

Website

https://submer.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

101–250 employees

Short description

Barcelona-based full-stack AI datacenter infrastructure provider specializing in single-phase immersion cooling, modular datacenter design, and GPU-as-a-Service. Serves hyperscalers, telecom operators, and governments through SmartPod cooling products, InferX AI cloud platform, and acquired Radian Arc edge infrastructure.

Ownership category

akta.pro rank

Product category

Data Center Liquid Cooling Infrastructure

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

Cooling Systems & Thermal Management (CRAC/CRAH, Chillers, Liquid Cooling) (HDABAKAD)

akta.pro secondary industries

AI Datacenter Power, Cooling & Racks (liquid cooling, power delivery) (HDAAAAAH), Heat Rejection & Mechanical Plant (Cooling Towers, Pumps, Condensers) (HDABAKAE)

Keywords

• Liquid cooling systems
• Immersion cooling technology
• Datacenter infrastructure
• AI cloud services
• Direct liquid cooling

Headquarters

HQ city

Barcelona

HQ country

Spain

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Liquid Cooling Hardware Sales: Sale of SmartPod immersion cooling systems (SmartPod EVO, SmartPod EXO, MicroPod) and related datacenter products including CDU units, rack infrastructure, and cooling accessories.
2. Datacenter Design & Build Services: End-to-end datacenter design, construction, and deployment services including modular facility builds, MEP integration, and commissioning for AI-ready infrastructure.
3. AI Cloud Services (InferX): GPU-as-a-Service offerings through InferX platform providing sovereign cloud and AI inference services across core datacenters and telco edge networks.

Pricing tiers

Go-to-market motion3 records

Distribution channels2 records

Marketing channels5 records

Core offering

Submer designs, manufactures, and deploys liquid cooling infrastructure for AI and high-performance computing datacenters. Its core offering centers on single-phase immersion cooling systems (SmartPod EVO, SmartPod EXO, MicroPod) using proprietary SmartCoolant dielectric fluid, complemented by direct liquid cooling systems, modular datacenter design-and-build services, and AI cloud services through its InferX platform and acquired Radian Arc GPU edge infrastructure.

Product overview

Submer is a full-stack AI infrastructure provider offering a comprehensive portfolio of liquid cooling and datacenter solutions. The core offering centers on single-phase immersion cooling products including the SmartPod EVO (plug-and-play deployment), SmartPod EXO (extreme density), and MicroPod (edge-ready). These are complemented by proprietary SmartCoolant fluid and Direct Liquid Cooling systems. Submer has expanded into AI infrastructure through its InferX platform (NVIDIA Cloud Partner for AI cloud services) and the acquisition of Radian Arc (carrier-embedded GPU edge computing). The portfolio includes Design & Build services for modular datacenter facilities, Labs R&D capabilities, and Smart DC Software for monitoring. The company positions itself as delivering end-to-end solutions from concept to deployment for AI-ready, liquid-cooled infrastructure that scales smarter, runs cleaner, and costs less.

Differentiator

Problem solved

Functional benefit

Brands

• InferX: Independent AI infrastructure company spun off from Submer in October 2025, offering AI cloud and GPU-as-a-Service platform for sovereign cloud and telco edge networks
• Rubix Data Centers
• SmartPod
• SmartCoolant

Products and services

• SmartPod EVO

Quantifiable outcome

• Sub-1.1 PUE achieved vs 1.5+ for conventional air-cooled facilities
• +5 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

22 partnerships are on record, tiered regional, major, core, ecosystem and case study.

• PureColoregionalStrategic or Co-development Partner · 25 June 2026Partnership to deploy GPU Edge infrastructure across PureColo data centers in the US and Canada, enabling low-latency cloud gaming and sovereign AI services.
• 2CRSimajorTechnology or Integration · 29 April 2026Collaboration to launch AI inference reference design with hybrid liquid cooling architecture at OCP EMEA 2026, integrating immersion-cooled GPU clusters with networking, storage, and full management stack.
• EneosmajorTechnology or Integration · 29 April 2026Collaboration on AI inference reference design featuring hybrid liquid cooling for scalable, ready-to-deploy AI inference workloads.
• GTPL BroadbandregionalTechnology or Integration · 14 April 2026Three-year Letter of Intent to deploy GPU Edge infrastructure within GTPL's network for AI cloud services in India.
• TeleIndia Datacentre (Datasamudra)regionalTechnology or Integration · 14 April 2026MoU to install AI cloud hardware at Datasamudra's facility at KIADB IT Park in Karnataka, India.
• ZEDEDAcoreTechnology or Integration · 18 March 2026Partnership to deliver modular, liquid-cooled edge AI infrastructure for high-density GPU inference in locations where traditional datacenters are unavailable. Joint solutions support up to 800 GPUs in three modular form factors.
• Hammer DistributionregionalChannel Partner/ Reseller/ Distributor · 6 March 2026UK partnership to provide resellers and systems integrators with local access to liquid cooling products and services for AI and HPC infrastructure.
• Boston LtdregionalChannel Partner/ Reseller/ Distributor · 4 March 2026UK partnership to expand access to liquid cooling solutions, helping organizations deploy energy-efficient, high-density computing environments.
• VNPTregionalTechnology or Integration · 4 March 2026Partnership to launch GPU infrastructure and cloud gaming services in Vietnam, enabling VNPT users to stream over 1,000 premium games and establishing AI Points of Presence.
• BlacknutecosystemGTM or Marketing Partner · 4 March 2026Cloud gaming provider partnership extending global cloud gaming deployment alongside Radian Arc's GPU infrastructure.
• Anant Raj LimitedcoreStrategic or Co-development Partner · 8 February 2026Strategic collaboration to develop AI-ready datacenters across India using Submer's liquid-cooling technology and modular infrastructure combined with Anant Raj's existing campuses in Manesar and Panchkula, Haryana. Targets 307 MW capacity by FY2032.
• CleanSparkcoreStrategic or Co-development Partner · 28 October 2025Strategic partnership for AI datacenter expansion across North America, combining CleanSpark's 3 gigawatts of U.S. land and power assets with Submer's liquid-cooling technology and design expertise.
• Zero TwocoreStrategic or Co-development Partner · 14 October 2025Partnership to accelerate UAE's AI growth through sustainable immersion cooling solutions, supporting regional digital infrastructure growth and sustainability targets.
• CastrolecosystemTechnology or Integration · 14 October 2024Showcased targeted flow technology for high-end AI servers combining Submer's cooling with Castrol's fluids and Supermicro servers.
• SupermicroecosystemTechnology or Integration · 14 October 2024Integration partnership for targeted flow technology demonstration with Submer cooling and Castrol fluids.
• Stellium Data CentresregionalStrategic or Co-development Partner · 8 October 2024OCP deployment partnership at Newcastle data center campus combining immersion cooling with Circle B technology.
• Circle BregionalTechnology or Integration · 8 October 2024Collaboration for OCP deployment proof of concept with Stellium Data Centres.
• IntelcoreStrategic or Co-development Partner · 17 October 2023Forced Convection Heat Sink (FCHS) collaboration enabling single-phase immersion cooling of 1000W+ TDP processors. Joint development of innovative cooling technology rivaling direct liquid cooling.
• PeaSoupcase studyStrategic or Co-development PartnerCase study partner for sustainable cloud powered by 100% renewable energy using Submer's SmartPodX immersion cooling.
• CampusGeniuscase studyTechnology or Integration5G private network solution using Submer's MicroPod enabling connectivity across remote agricultural terrain.
• Telefónicacase studyTechnology or IntegrationPilot evaluation of immersion cooling under harshest conditions in Madrid, testing thermal capacity, efficiency, and hardware performance.
• Government of Madhya PradeshcoreStrategic or Co-development PartnerMoU to jointly develop up to 1 GW of liquid-cooled, AI-ready datacenters in Madhya Pradesh, positioning India as a manufacturing hub.

Scale indicators12 records

Recent moves11 records

Expansion highlights7 records

Direct peers

• Green Revolution Cooling (GRC): GRC is a direct competitor offering single-phase immersion cooling solutions for data centers, including the ICEraQ product line and EnviroCool dielectric fluid. Most directly comparable to Submer in technology approach (single-phase immersion) and customer base (enterprise and hyperscale data centers).
• Asperitas: Asperitas is a Dutch-based immersion cooling provider offering the AIC24 and Immersed Computing solutions using natural convection (passive) single-phase immersion. Directly comparable to Submer in product category and target customers, with similar focus on sustainability and high-density deployments.
• CoolIT Systems: CoolIT Systems is a leading direct liquid cooling (DLC) provider for high-performance computing and AI workloads, with strong OEM and hyperscaler relationships including NVIDIA reference designs. Closely comparable to Submer's DLC offering and competes for the same high-density AI datacenter customers.
• LiquidCool Solutions: LiquidCool Solutions provides immersion and direct liquid cooling for AI, HPC, and edge data centers. Comparable to Submer in product breadth (both immersion and DLC) and in serving high-density enterprise and HPC customers.
• Zutacore: Zutacore is an immersion cooling provider focused on enterprise and HPC data centers, offering its Zutacore ImmersionStation product. Directly comparable to Submer in single-phase immersion technology and target customer segments.

Broad incumbents

• Vertiv: Vertiv is a major data center infrastructure provider offering direct liquid cooling, precision cooling, and integrated rack-scale solutions. A broad incumbent competing with Submer in liquid cooling for AI and high-density workloads, with significantly greater scale and OEM relationships.
• Asetek: Asetek is a Danish liquid cooling provider with both data center (AIO/DLC for HPC/AI) and gaming/PC segments. Comparable to Submer in data center DLC products and serves similar enterprise and HPC customer segments, though with broader consumer exposure.
• Schneider Electric: Schneider Electric is a global data center infrastructure giant offering power, cooling, and rack-level solutions including its own DLC portfolio. Competes broadly with Submer in cooling and integrated infrastructure for AI and hyperscale environments, with vastly greater scale.
• Rittal: Rittal is a major provider of IT infrastructure including liquid cooling (LCP) systems and data center enclosures, owned by Friedhelm Loh Group. Competes with Submer in modular liquid cooling solutions for AI and HPC applications, with strong enterprise and industrial customer base.

Emerging players

• Nebius Group: Nebius is an AI cloud infrastructure provider building full-stack GPU compute platforms. Comparable to Submer's InferX spin-off in offering AI infrastructure as a service, though without the proprietary liquid cooling hardware layer.

Market position

Strengths5 records

Weaknesses3 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/submertech
• Facebookfacebook.com/submertech
• LinkedInlinkedin.com/company/submer-immersion-cooling

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries2 records

Funding overview

Funding rounds7 records

Investors7 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Submer