Background

With over 600 sites UK wide, this retailer has taken a nation-wide approach to net 0 carbon by 2040. With the vast number of sites, rewiring every site is not an option, so utilising a wireless solution to assist achieving this is the best, and cheapest option.

Challenge

Most stores consist of long trunking lights daisy-chaining together to form a long continuous light over an aisle. During shopping hours, a continuous, unchanging, light level is required store-wise but during non-operational hours and during stocking hours, adjustable, presence/absence levels can be utilised. The exact lux levels for both are unknown to achieve the best balance between required lighting and energy saving methods.

Benefits

As the retail market cannot close, installation of the wireless solution, and the ability to change settings remotely, means that install happens over one evening outside of working hours so does not impact trading at all.

The introduction of working hours/stocking hours in the lights means a drastic saving of energy with running devices at less than 100%, while keeping some off that are not needed.

Utilisation of the dali-bus means install happens quickly via contractors and the ease of commissioning, and the productivity of the installation teams, keeps the install and commissioning stages simple and efficient.

The client reports that the current overall savings for the stores is around £4.2 million annually. And this is with about half of the stores converted. A very quick pay-back.