economics Cosmic Scale

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

SSRN · March 18, 2026 · 6430998

Hu Du

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