economics Cosmic Scale

We can literally "ship" the leftover heat from giant AI computers across the globe to heat our homes for free.

March 18, 2026

Original Paper

The Computational Dividend: Matching Global AI Waste Heat with Domestic Heating Demand Through Geographic Decoupling

Hu Du

SSRN · 6430998

The Takeaway

Since computers convert nearly all electricity into heat, researchers propose routing AI tasks across time zones: a person using AI in a warm Sydney afternoon could effectively 'send' that processing heat to a freezing home in Helsinki where it is pre-dawn. This geographic decoupling treats every AI-capable PC as a dual-purpose appliance that computes and heats simultaneously.

From the abstract

The rapid proliferation of AI-capable personal computers and workstations, expected to ship over 100 million units annually by 2027, creates a timely opportunity to rethink domestic heating. These devices convert virtually all their electricity into heat, yet this heat is currently wasted. Meanwhile, home heating accounts for 32% of global building energy use and remains dominated by fossil fuels. This paper bridges these two challenges through the Edge AI Domestic Heating Framework (EADHF), whi