The UK’s second-largest grocery retailer, Sainsbury’s, has introduced new technology into 100 of its stores to enable it to use the warmth created by its in-store fridges to cut the cost of heating its stores.
The company says that the technology developed by renewable energy specialist firm Greenfield Energy could see the bills for providing power at these stores cut by more than 30 per cent.
The system works by channelling and storing the heat from the chillers in an underground chamber, from where it can be pumped back into the store whenever it is needed.
Sainsbury’s head of sustainability, engineering and energy, Paul Crewe, claimed the company was “leading the way on this groundbreaking technology”, and challenged other retailers to follow suit.
The new project was unveiled a few days after the company announced that it had opened the first of its new stores to be powered exclusively by energy generated from its own food waste.
It has installed an anaerobic digestion system at its store in Cannock, Staffordshire which will produce power from food waste collected from Sainsbury’s stores all over the UK.