Submer Group Unveils Corenix Modular Data Center Company for AI

Submer Group announced on September 28, 2026, the launch of Corenix, a modular data center infrastructure company serving neoclouds, hyperscalers, and AI operators, and appointed former Johnson Controls executive Martin Renkis as its chief executive.

Corenix delivers custom-engineered modular data center platforms based on NVIDIA reference designs, which Submer Group describes as industrialized for AI at scale and delivered from factory build and testing through on-site commissioning. The new company is headquartered in Houston, Texas, and focuses on the deployment layer of AI infrastructure, bringing rack power, cooling, networking, and IT together as one integrated, factory-tested system intended to bring AI capacity online against a fixed date.

A Factory-to-Site Delivery Model

Under the delivery model the company describes, Corenix designs, builds, integrates, and factory tests complete functional data center modules — covering IT, power, cooling, and networking — at production facilities before delivering them to project locations. Installation, connection to site infrastructure, site acceptance testing, commissioning, and operational readiness then take place at the client site. Corenix manages the agreed project scope across both stages, combining engineering, manufacturing, supply chain coordination, and on-site deployment into a single delivery model.

Submer Group said traditional data center builds cannot keep pace with the power, networking, cooling, and serviceability demands of accelerated computing, or with the need to support successive generations of high-density compute, and that Corenix was created to close that gap. The group describes the modular approach as giving customers a repeatable path from an approved technical architecture to operational capacity at the required location, with each platform based on an NVIDIA reference design and custom-engineered to the client’s own requirements.

Renkis said customers need clarity before they commit on what needs to be built, how it will be tested, who is accountable, and when it will become operational. “Corenix puts a dated program and a go-live date on the table before a contract exists,” he said. One team, he added, stays accountable from factory integration and testing through on-site commissioning and operational readiness, with the flexibility to support current and future accelerated computing systems.

Leadership

Renkis joins Corenix from Johnson Controls, where he served as executive director of Data Center Infrastructure Services and developed AI infrastructure offerings covering power, cooling, heat recovery, operations, and financing. He was previously founder and CEO of Smartvue, an IoT hardware and software platform company acquired by Johnson Controls, and of Trainersoft, an enterprise e-learning software company acquired by OutStart, now IBM.

Patrick Smets, CEO of Submer Group, said AI factories are driving unprecedented demand for new data center capacity and that the market needs a faster, more predictable way to build it. “We are bringing that experience into a dedicated business built to deliver AI infrastructure at scale,” Smets said, pointing to the group’s history in modular data center delivery and the engineering, thermal, and infrastructure expertise it developed while solving high-density compute challenges.

Submer Group Structure and Scale

Corenix draws on Submer Group’s experience in high-density thermal engineering, global infrastructure deployment, and operations. The group says that experience was proven at scale by a campus with hundreds of megawatts of capacity delivered as a fully modular compute buildout in nine months from order to delivery, alongside more than a decade of liquid cooling engineering. Corenix works alongside two sister companies where their capabilities support a customer’s full-stack AI infrastructure deployment requirements: Rubix Data Centers, which develops and operates AI data center campuses, and Radian Arc, which provides GPU-as-a-Service and AI-as-a-Service.

Submer Group, which describes itself as a full-stack AI infrastructure company, brings together specialist operating companies across the AI infrastructure stack, spanning land and power through cloud and edge. The group says it has deployed 500 MW+ of liquid-cooled infrastructure and holds 8 GW+ of powered land across the Americas, EMEA, and APAC. Founded in Barcelona in 2015, the group operates globally with hubs in Houston and Taipei.

The group’s website presents four capability layers: GPU-as-a-Service and AI-as-a-Service, powered by Radian Arc; data center development and operations, powered by Rubix; modular data center solutions; and thermal architecture. The site also cites three global R&D labs and more than 90 partner telco networks worldwide.