Full-stack AI & HPC · liquid and immersion cooling
Hybrid & Modular Compute, Flexibility and Heat — three products from the same megawatt.
Kelvin Flexbox · built for the Nordic Energy Markets
Northern Europe builds Energy faster than demand can take it. AI waits in multi-year queues. Kelvin puts High-Performance Compute at the surplus — and sells the Heat.
The loop
Six steps from a stranded megawatt to three revenues. The load sits at the surplus.
01 / 06
Sit the load where the surplus already is — behind the meter or spare industrial.
02 / 06
Northern Europe builds Energy faster than demand can take it. Kelvin places High-Performance Compute at pockets of Surplus & Excess energy — no extra load on the existing grid.
03 / 06
AI training and batch inference sit behind multi-year queues. A 40 ft ISO at the source runs them. ≈1 MW.
04 / 06
When the grid is tight or the surplus disappears, jobs checkpoint and the site steps down — built to move in under 0.7 seconds.
05 / 06
Every kilowatt of Compute leaves as Heat. Capture is designed in — Heat as an asset, not a side effect.
06 / 06
The connection earns all three revenues simultaneously: Compute as the baseline, Flexibility-as-a-Service, and Thermal/Heat.
The gap
25%
Of Europe’s wasted Energy — trapped in northern Sweden.
50%
Of Europe’s curtailment (surplus Energy) — trapped in the Nordics.
+41TWh
Sweden, yearly — and rising.
322h
Negative-price hours in Sweden, 2025.
Full-stack
You bring the pocket. Kelvin brings the rest — infrastructure, Compute, hardware, software, Flexbox, Flexibility-as-a-Service, Thermal/Heat and operations.
The unit · FB-40
Compute, controller, Heat flange and connection in one pre-tested 40 ft ISO. One pad. Compute, Flexibility, Heat.
01 · Compute
Explore ComputeFour load tiers on one dispatchable site. Checkpoint in the contract — the job pauses inside the window and comes back.
First off → never curtailed
02 · Flexibility
Explore FlexibilityFlexibility-as-a-Service — paid on stand-by, on activation and while Compute is running.
03 · Thermal
Explore ThermalThirty-three kelvin, sold twice.
04 · Energy
Explore EnergySurplus Energy is revenue, not loss.
05 · Operations
Kelvin runs Flexbox, controller, meters and Compute. You keep operations.
Control · dispatch · monitoring
The system
One pad. Compute, Flexibility, Heat. A valid first step is one module on the pad — scale out on a single connection when surplus and sink both grow.
20 ft on request · Stack ×2 · ≈2 MW · up to 672 servers
Explore the Flexbox
Five parts on one pad. Pick a part — or switch on the flows to see Energy come in and Heat go out.
12 000 × 2 400 × 2 800 mm. One module, pre-tested. Stack ×2 on the same pad — ≈2 MW, up to 672 servers. 20 ft on request.
Up to 336 servers. ≈1 MW per 40 ft ISO. Interruptible AI and HPC that can checkpoint.
Closed-loop on the unit. Liquid and immersion cooling supported — recoverable Heat.
Behind the meter or grid-connected. On-site controller and industrial-grade smart meters. Start, pause, resume in <0.7 s.
Heat flange out — sized to the sink. Rack outlet ~305 K; district supply ~338 K.
Visualization · 4 racks · up to 336 servers · ≈1 MW
How we start
Energy host or Compute buyer? Reach out — we map the loop and write back.
For Energy hosts
Location, connection, hours, Heat if any. You keep generating — Kelvin handles everything else.
For Compute buyers
Say what has to run — training, batch inference, simulation. We map surplus and Flexibility-as-a-Service. We write back.
vs Battery Flexibility
Multiple revenues, continuous dispatch, no cycle wear.
<0.7 s
Dispatch response
0
Cycle wear — servers dispatch without wearing out
3
Public products on one connection
Who we build with
Hosts bring the surplus. Workloads that can pause ride on it — Flexibility in the contract.
Hosts
Workloads
Host · Industrial
Industrial, manufacturing and process loads stay on. Flexibility-as-a-Service absorbs Surplus & Excess energy — local Compute, local Heat, Sovereign AI.
Host · Residential
Heat into the district network that already serves buildings and homes. A Flexbox can feed that pipe.
Host · Hydro
Hydro at generation, behind the meter or spare connection. Compute absorbs the spill; the host keeps generating.
Host · Geothermal
Compute behind the meter. Heat designed in.
Host · Solar & wind
Fully renewable generation. Compute behind the meter absorbs surplus so the Energy is used, not switched off.
Host · Manufacturing
Drying, kilns, process. The flange is sized to the line you already run.
Workload · AI
Work that can wait. Checkpoint in the contract.
Workload · HPC
Jobs that can wait. The load moves when the grid calls.
Workload · Cloud
Capacity is on request. Work that can wait.
Workload · Edge
Behind the meter, at generation. A 40 ft Flexbox at the source.
Workload · Bitcoin
Paid on stand-by, paid on activation, paid while active and paid in yield. No matter the market price of Bitcoin, we produce for Production Price.
“It’s not a Wires problem. It’s a Flexibility problem. We solve it.”
Kelvin runs the Compute — the unit and the cooling. You remain the Energy host: site access, the connection, and the Heat sink where you have one.
Paid on stand-by, on activation, and while Compute is running. See How it pays.
Batteries store Energy. Compute earns while it flexes. Multiple revenues, continuous dispatch, no cycle wear. vs Battery Flexibility.
Low-demand retrofit, high-demand plug-and-play.
The load is built to ramp. When the grid is tight or the surplus disappears, jobs checkpoint and the site steps down. Heat follows the load — a paused unit is not a baseload boiler.
Local on site, municipal or district. We do not take over the network. Thermal.
The north spills cheap power; the south imports expensive. Kelvin sits the load at that surplus. Energy.
It’s not a Wires problem. It’s a Flexibility problem. We solve it.
No. Behind the meter, at the surplus. Energy.
No. One Flexbox is a valid first step. Scale.
Compute that flexes. Paid on stand-by, paid on activation, paid while active and paid in yield. No matter the market price of Bitcoin, we produce for Production Price. Bitcoin.
The most Flexible Compute-form and algorithm (SHA256).
How we start
Location, surplus hours, the connection, a Heat sink if there is one. Kelvin brings the full stack — and operates it.
A short brief opens in your mail app. We map the loop and write back.