Our existing estate

Energy use is an important sustainability goals and our commitment to Everyday Low Cost and Everyday Low Prices so it's something we monitor every day. From lighting and heating to fridge doors and pizza ovens, our Energy Bureau controls the settings of all our equipment.

And while our new stores are the natural places to implement new, renewable and sustainable energy solutions, we don't leave our existing stores behind. If a new technology is found to be working well in a new store, we retrofit or implement it in existing stores when possible. Of course, the same can also happen the other way round. It’s all about making sure we have the most efficient systems in place to reduce both costs and carbon emissions.

Rochdale: our exemplar depot

In 2013 we opened our new environmental depot in Rochdale. The building includes a variety of low carbon technology such as a combined heat and power plant, rainwater harvesting, solar panels and high efficiency refrigeration. This means 26% lower carbon emissions, 30% less water use and 28% more energy efficient versus previous similar depots.

Reducing refrigerants

Refrigerants, it’s a complicated field. With changes in legislations, recommendations and disagreement within the industry, it’s also a key area of focus for Asda.

Read more

Leicester: power from the sun

In 2014, we installed a large-scale solar PV system on the roof of our new Abbey Road superstore in Leicester. The 1,625m2 array consists of 984 panels on both the north and south facing areas of the roof to provide maximum coverage and energy generation. The whole system does lots to reduce the overall carbon footprint and operational costs of the store and saves a huge 197,538kWh of energy every year.

Dealing with depots

Depots are included in our existing building targets and achieved a 20% reduction in carbon emissions by 2009 (vs. a 2005 base line) – a year earlier than the 2010 target! The improvements made range from LED lighting in car parks and freezer chambers to standardised heating levels. We also increased the temperature of our freezer chambers from -25 to -20 °C — this does not affect the goods but has saved 7,000 tonnes of carbon every year.

All hail the Aerofoil

In a small, yet significant, move, Asda has introduced Aerofoils to its fridges. To the customer, it just looks like a strip of metal at the front of the shelf. But this ingenious metal wing channels cold air down through the shelves, making the most of the chill rather than making the aisles cold.

Mistral: a new way to refrigerate

Here at Asda, we have introduced the Mistral system. It’s a completely different approach to refrigeration. A unit containing coils and fans is installed on the roof and air from this is then ducted to the sales floor cases and cold stores.

The fridges look exactly the same, they just have a higher angled pipe for the distribution ducting to sit behind. Even though they look and perform like a regular fridge, the Mistral system is busy reducing our energy use by up to 15%. Not only that, we use less refrigerant in our system. A real win-win. 

Asda's Energy Bureau

Asda's dedicated Energy Bureau is incredibly sophisticated, providing energy monitoring, management and maintenance.

To do this, it constantly monitors around 10,000 submeters to accurately measure energy use across our 614 stores. This means that when something isn’t working quite as it should, it is identified and investigated immediately.

Our Energy Bureau also helps us to reduce our energy use even further. Where equipment is malfunctioning, it’s fixed. But if we find that it’s inherently inefficient, we work with the Bureau to develop innovative solutions.

Although the Bureau means we can manage nearly 90% of a stores energy consumption remotely, we still really need our store colleagues to play their part to help us reach our targets.