Submer Group launched Corenix, a modular data center company built to serve neoclouds, hyperscalers, and AI operators, and named Martin Renkis as chief executive.
Corenix builds custom-engineered modular data center platforms based on NVIDIA reference designs. It designs, builds, integrates, and factory tests complete IT, power, cooling, and networking modules at production facilities before shipping them to a project site. Installation, connection to site infrastructure, acceptance testing, commissioning, and operational readiness then happen on site, with Corenix managing both stages under one project scope. The company says traditional data center builds cannot keep pace with the power, networking, cooling, and serviceability demands of accelerated computing, and that Corenix was built to close that gap.
Corenix draws on Submer Group's experience in high-density thermal engineering and global infrastructure deployment. Submer Group points to a campus with hundreds of megawatts of capacity delivered as a fully modular buildout in nine months from order to delivery, and more than a decade of liquid cooling engineering. Corenix works alongside two other Submer Group companies: 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 CEO Patrick Smets said the market needs a "faster, more predictable way to build" AI data center capacity. Renkis said Corenix puts a "dated program and a go-live date on the table before a contract exists."
Renkis's background
Renkis joins Corenix from Johnson Controls, where he was executive director of Data Center Infrastructure Services and developed AI infrastructure offerings covering power, cooling, heat recovery, operations, and financing. He previously founded and led Smartvue, an IoT hardware and software company acquired by Johnson Controls, and Trainersoft, an e-learning software company acquired by OutStart, now IBM.
Submer Group's footprint
Submer Group was founded in Barcelona in 2015 and now operates globally with hubs in Houston and Taipei. The group has deployed more than 500 megawatts of liquid-cooled infrastructure and holds more than 8 gigawatts of powered land across the Americas, EMEA, and APAC, addressing power availability, thermal density, deployment speed, and data sovereignty. Corenix is headquartered in Houston, Texas.

