Accelsius, the leader in two-phase, direct-to-chip liquid cooling for AI and high-performance computing, has entered into an agreement to deploy its technology at a new 300MW AI data centre campus in Ontario, Canada.
The deal is with DarkNX, a global digital infrastructure company, to deploy Accelsius’ NeuCool technology across a new 300MW AI data centre campus in Ontario, Canada.
The project is expected to be the largest two-phase, direct-to-chip deployment to date, signaling a major shift toward large-scale industry adoption of next-generation cooling.
The first phase includes two facilities at 65MW, with deployments scheduled for 2026 and 2027.
As part of its overall thermal strategy for the campus, DarkNX selected NeuCool for chip-level cooling alongside high-efficiency chiller systems from Johnson Controls (JCI) for facility cooling.
The combined use of two proven, best-of-breed solutions will enable DarkNX to simplify system design, unlock higher efficiency, and operate with significantly warmer facility water temperatures, improving sustainability and reducing operational cost.
DarkNX CEO, Isaac Islam, said the company’s vision is to build the world’s most advanced AI data centres and to build them responsibly and efficiently.
“Our technology agnostic and efficiency-first approach is why Accelsius’ two-phase, direct-to-chip technology stood out for enabling significantly warmer facility water temperatures, which paired with high-efficiency chiller systems from Johnson Controls, gives us a step-change in performance, sustainability, and total cost of ownership,” he said.
“This is the future of AI data centre design, and we’re proud to lead the way.”
The DarkNX deployment reflects a growing industry movement toward liquid cooling architectures that support the extreme densities of modern AI clusters.
NeuCool delivers high heat-removal capacity at the chip, using non-conductive refrigerants, enabling more free cooling hours, and improved energy efficiency.
Accelsius CEO, Josh Claman, said this milestone represents a defining moment for the evolution of liquid cooling.
“DarkNX’s 300MW commitment signals a clear shift toward large-scale adoption of two-phase, direct-to-chip cooling,” Claman said.
“We’re excited to support Isaac and the DarkNX team in demonstrating how next-generation cooling, applied at scale, sets a new standard for AI-era data centres.”