Penneys department store project: uncovered a potential energy savings of 26%

About the company

Penneys is one of Ireland’s leading retailers and operates twelve stores in Ireland. The largest store is located in Dublin’s Dundrum shopping centre, one of the largest shopping centres in Europe. The store is open seven days a week from 8:30am to 8pm.

The retail business uses large amounts of energy for heating in the winter and cooling in the summer, as well as energy for the many lighting systems in use. When Penneys made the decision to embark on an energy efficiency drive, they contacted Maximpact energy expert Gerard

Findings from the energy audit

The energy audit uncovered a wide range of energy saving opportunities in heating, cooling and lighting. This included a novel opportunity in thermal and electricity usage associated with the HVAC systems, with a savings potential of 26%. The solution would allow for more intelligent energy control based on the occupancy level of the retail unit. Substantial energy savings associated with better boiler controls and lighting retrofits were also identified.

A review of potential renewable energy systems was also undertaken. These systems included solar thermal power to provide domestic hot water, solar electric power for electricity supply, geothermal heat pumps for space heating, biomass for hot water generation, and wind power.

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