Accelsius
Bottleneck owner
Two-phase direct-to-chip liquid cooling (NeuCool) for AI data centers; waterless, 4,500W+ per socket.
Accelsius builds two-phase, direct-to-chip (2P D2C) liquid cooling for AI and high-performance computing data centers. Its NeuCool platform uses a dielectric refrigerant that boils on the chip and condenses in a closed loop, cooling 4,500W+ per socket without water — the company claims zero water use, ~80% lower CO2, and 50% energy savings versus alternatives, with 8-17% total cost-of-ownership savings. Products include the NeuCool IR150 CDU, now generally available, plus a HyperStart deployment program. Accelsius was formed in 2022 by Innventure and is deploying at scale, including at an EdgeConneX training center and a 300MW DarkNX AI campus in Ontario.
Research mapping
Physical AI / Grid, Power & Thermal Infrastructure (L2) / Bottleneck owner
Evidence boundary
Original analysis and independent corroboration remain under development. Commercial scale and durable technical advantage remain under review.
What makes it defensible
Two-phase, direct-to-chip liquid cooling using a dielectric refrigerant that cools 4,500W+ per socket with zero water — a thermal platform for the power densities AI racks demand.
Position in the stack: Thermal-infrastructure layer for AI data centers, sitting between chip vendors and data-center operators; supplies the cooling system that makes high-density AI compute deployable.
Who buys it
Named customers: EdgeConneX, DarkNX
Founding team
Josh Claman — Founding CEO; now Executive Chairman — Led Accelsius from its 2022 founding; moved to Executive Chairman (May 2026) to focus on partnerships, customers, and capital strategy
John Hewitt — CEO — Founding Accelsius board member and seasoned data-center infrastructure executive; appointed CEO in May 2026
SourceFinancing detail
- Last round
- Series B ($65M, Jan 2026)
Investors: Johnson Controls, Legrand, Innventure
Mapped funds and investors
Direct relationships supported by published evidence.
Reported holdings as-of
No sourced relationships mapped yet.
Disclosed investment history
No sourced relationships mapped yet.
Showing up to four relationships in each group. ETF weights describe the fund’s portfolio, not ownership of this company. Private investment history does not establish current ownership.