One of the world’s most powerful supercomputers could one day heat your home — UK researchers plan to use abandoned coal mines to bring warmth to millions of households

UK researchers are testing a groundbreaking system to repurpose waste heat from a supercomputing facility, potentially providing warmth to millions of homes. 

The system, a first in the UK, aims to store excess heat generated by the University of Edinburgh’s Advanced Computing Facility (ACF) in disused mine workings. The ACF, housing the national supercomputer, currently emits up to 70 GWh of waste heat annually, a figure expected to increase to 272 GWh with the installation of the government’s forthcoming Exascale supercomputer.