Sainsbury’s stores heated using warmth stored underground for winter months

Posted on Oct 7 2014 - 10:45am by Sustainable News

Sainsbury’s is pioneering new technology that will allow stores to save heat produced by store fridges, to use in the store’s heating system.

Sainsburys Ground Source Pump

Sainsburys Ground Source Pump

A company called Geoscart will work with Sainsbury’s and British Gas to provide ground-source heating across 100 stores. The technology cuts energy consumption by more than 30 per cent.

How does it work?

  • Fridges in the stores produce heat as part of the refrigeration process
  • This heat – which would otherwise be lost as waste – is transported to an underground vault through a series of pipes
  • The heat is kept underground using subsurface rock, which has good insulating properties
  • When it is required, the heat is pumped back into the store at whatever rate is needed
  • Store heating bills are cut as less is needed from the National Grid to heat stores

Paul Crewe, Head of Sustainability, Engineering & Energy at Sainsbury’s said: “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.”

Grahame Newton, CEO of Geoscart, said: “This marks the next stage in Geoscart’s growth. We developed the baseline technology from the oil and gas sector and have successfully applied it to the retail-consumer space. We are looking forward to rolling out the technology to a wider audience with the help of our operational partners.”

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