Theguardian iconTheguardianSep 19, 2026

Domestic datacentres: how computer power can help heat your home

Energy bills are scheduled to rise next month but there are innovative ways to heat your home and save money. When Giles Gibson turns on the hot tap in his home, the water that comes out of it is not heated by gas but by the tiny datacentre strapped to the tank.

Domestic datacentres: how computer power can help heat your home

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Energy bills are scheduled to rise next month but there are innovative ways to heat your home and save money.

When Giles Gibson turns on the hot tap in his home, the water that comes out of it is not heated by gas but by the tiny datacentre strapped to the tank.

Attached to the hot water cylinder in his London home is a compact computer server that generates heat and then transfers it as it operates.

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Energy bills are scheduled to rise next month but there are innovative ways to heat your home and save money. When Giles Gibson turns on the hot tap in his home, the water that comes out of it is not heated by gas but by the tiny datacentre strapped to the tank. Attached to the hot water cylinder in his London home is a compact computer server that generates heat and then transfers it as it operates.

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