Cooling
Liquid cooling crosses over, and the loop gets smart
2026 is the year liquid cooling stops being the exception. Industry trackers expect liquid-cooled capacity, which roughly matched air cooling in 2025, to double air cooling capacity by the end of this year. Direct-to-chip cold plates, CDU-based systems, and immersion are all scaling at once as AI racks push past 100 kilowatts and air alone can no longer keep up.
The more interesting shift is what sits inside the loop. The standout development this season is thermal intelligence: liquid loops are now packed with sensors tracking flow rate, pressure differentials, inlet and outlet temperatures, and even coolant chemistry, feeding software that tunes cooling in real time. Heat reuse is maturing alongside it, with European campuses feeding waste heat into district heating and US operators piloting absorption chillers that turn server heat into chilled water. Cooling is becoming an active, instrumented system rather than fixed plumbing.
Source: Build, ByteBridge, Upsite