Waitrose trials "invisible door" to cut retail energy bills

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Waitrose is trailing an innovative energy efficiency technology
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Waitrose is trailing an innovative energy efficiency technology

'AirDoor' could cut £1.5bn from the energy bills of British retailers

Waitrose is set to trial a pioneering new energy efficiency technology, an invisible door that promises to cut energy bills by using air to form a barrier at entrance and exits, it announced yesterday...

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