Low Carbon Store

Objectives

Morrisons’ Stanground store formed part of b:ssec’s Carbon Trust Strategic Design Advice project to evaluate passive design, energy efficiency and renewable energy options. A target of 10% renewables was stipulated along with a BREEAM rating  of “Excellent”. To achieve these targets a number of technologies were analysed using Morrisons’ own carbon hierarchy of avoiding and reducing energy demand before introducing renewable energy.

Delivery

HFC emissions were reduced using natural refrigeration systems. Heating demand was reduced by proposing to combine a Heat Harvester with a water source heat pump. Lighting demand was reduced by pioneering north facing roof lights with south facing PV arrays, maximising natural light and minimising solar gain. When used in conjunction with an all LED, dimmable lighting scheme, an intelligent lighting system was created. Water demand was reduced using rain water harvesting.

Results

Modelling of the systems proposed by b:ssec, achieved an energy performance certificate with an “A” rating for building services. A structure for monitoring the store’s performance using sub-meter data has been created to monitor the performance of the low carbon measures. The measures led to a annual carbon saving of 250 tonnes of CO₂.

 

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