Retailer Sainsbury’s is going to roll out ground-source heating to 100 stores to lower its energy bills.
The supermarket will work with British Gas and a company called Geoscart on technology allowing stores to save heat produced by store fridges, then use it in the store’s heating system.
Heat produced from fridges will be transported to an underground vault through a series of pipes and kept underground using subsurface rock, which has good insulating properties. When needed, the heat is pumped back into the store.
Grahame Newton, CEO of Geoscart said: “We developed the baseline technology from the oil and gas sector and have successfully applied it to the retail-consumer space.”
Paul Crewe, Head of Sustainability, Engineering & Energy at Sainsbury’s added: “We’re delighted to be leading the way on this groundbreaking technology – helping to reduce energy use and carbon. I hope that with Geoscart’s help we’ll now see more retailers following suit.”