Submer
Bottleneck owner
Liquid/immersion cooling plus a full AI-infrastructure group (thermal, modular DC, DC ops, GPUaaS); 500MW+ deployed, 8GW+ capacity.
Submer Group builds liquid- and immersion-cooling infrastructure for AI data centers, positioned as 'connected intelligence for AI infrastructure': core immersion/direct-to-chip thermal systems, modular data centers, data-center development & operations (Rubix), and GPUaaS/AIaaS (Radian Arc). Reports 500MW+ of liquid-cooled deployments and 8GW+ of deployment-ready capacity across North America, EMEA and APAC.
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
Immersion-cooling density (100kW/rack-class) as the thermal moat, extended upward into a systems-integrator group — depth without lock-in.
Position in the stack: Bottleneck owner in the thermal layer: the cooling that unlocks high-density AI compute, now integrating the full AI-infrastructure stack.
Who buys it
Named customers: Telefónica, Stellium Data Centres
Founding team
Daniel Pope — Co-founder — Co-founded Submer (Barcelona) in 2015
Pol Valls — Co-founder — Co-founded Submer (Barcelona) in 2015
SourceFinancing detail
- Last round
- Series C ($55.5M, Oct 2024)
Investors: M&G, Planet First Partners, Norrsken VC, Mundi Ventures
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.