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Article by Peter Ibbotson, Director of Construction and Chief Engineer at J Sainsbury plc. The article describes how Sainsbury's "has systematically reviewed its store design over the past 15 years in order to arrive at the concept of the "low energy supermarket" " and "how improvements to lighting, refrigeration, heating ventilation and air conditioning have given savings of 40% compared with earlier designs".

An earlier dated version of this article is included in a correspondence file which was to be given at the French Energy Management Association conference on 11 to 13 June 1990.