Immersion-cooled compute

Making energy waste a thing of the past. Energy in. Energy out. Nothing lost.

Data centres use 1.5% of the world's electricity and throw almost all of it away as heat. We put it to work, heating homes and steadying the grid. We are building the proof.

If the world's data centres worked this way.

Pick a place.

World

485 TWh of data centre electricity in 2025

About 1.5% of world electricity generation. The IEA projects about 950 TWh by 2030.

Source: IEA, Key Questions on Energy and AI (April 2026)

If it were captured and controlled the way our site is:

485 TWhof 60°C heat a year, instead of heat thrown away
51 millionhomes' worth of gas heating, at the UK's typical 9,500 kWh a year
89 MtCO₂e a year avoided if that heat replaced gas
53 GWthat the grid could switch off in about four seconds

A globe of the world, drawn from Natural Earth land data, with markers for the places listed below.

Drag to turn the globe. Land is drawn from Natural Earth data.

An illustration of scale, not a forecast. How this is worked out

Where we are going.

Five things we want to be true of every data centre.

A grid that can lean on computing, not carry it.

A grid running on wind and solar needs loads that can get out of the way in seconds. Data centres can be that load.

At world scale: 1.5% of all electricity, turned from a burden into a resource.

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A wind turbine feeds the grid; a switch on the compute site turns it on and off Compute site Down when supply is tight, up when the wind blows Renewable supply

Load the grid can switch off in seconds, not minutes.

Conventional demand response takes minutes. The grid needs seconds. Ours answers in about four.

At world scale: about 53 GW the grid could switch off in seconds today, about 103 GW by 2030.

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Live illustration of the site responding to a grid call A readout shows 78 kilowatts. A grid call appears, compute units in the immersion tank go dark, the load falls to about 3 kilowatts in 4.4 seconds, then units restart and the load climbs back to 78 kilowatts. Site load 78 kW Grid call Dry cooler 60°C 40°C One of three tanks. Eight of twenty-four units.
Illustration, running on the site's measured figures: full load 78 kW, 95 to 96% shed at site level, mean 4.4 s response, 8 to 15 s to restore.

Heat that gets used, not thrown away.

Almost every watt a data centre uses becomes heat. Today it goes into the air. It could heat the building next door.

At world scale: heat for about 51 million homes today, 100 million by 2030.

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Hot water flows from a compute unit into a pool building and a greenhouse Compute unit 60°C 40°C back Pool, laundry, care home, greenhouse

Every kilowatt-hour accounted for, every second.

Savings you can prove are worth more than savings you estimate. So we measure everything, every second.

At world scale: numbers that grids, regulators and buyers can trust.

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Two illustrative traces, power in kilowatts and temperature in degrees, scrolling once a second Electrical, kW Thermal, °C Sampled every second, time-synchronised Illustrative traces

Storage that lasts for days, made from iron, water and air.

Wind and solar come in surges and gaps that last for days. Batteries today hold hours. We want days.

At world scale: renewable power stored for days instead of thrown away.

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Surplus wind and solar charges an iron-air battery made of iron, water and air, which discharges for about 100 hours to a data centre and the grid Surplus wind and solar Charge Iron Water Air Iron-air battery Discharge Data centre Grid 0 h 50 h About 100 h

Where we are today.

78 kWthe grid can call on
4.4 sfrom grid call to load off, on average
60°Chot water from the heat compute makes
17logged events behind these numbers

Response figures were measured over four weeks of continuous, second-resolution instrumentation at our own facility. Equipment figures come from documented specifications. Find out more

Who benefits

Energy companies and aggregators

Flexibility in seconds, with one-second data behind every event.

Buildings that need heat all year

60°C hot water without a heat pump. Pools, laundries, breweries, care homes, growers.

Battery manufacturers and test houses

Energy attributed to every process step. In development.

Build the next one with us.

Flexibility, heat or measurement: we would like to hear from you.

Or write to dom@anait.co.uk