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John Lewis Partnership plc Sustainability Review 2014


Refrigeration and Water Climate change and water scarcity are growing challenges. We’re focussing on reducing the emissions from refrigeration and using water carefully throughout the Partnership.

Waitrose refrigeration and cooling direct emissions (tonnes CO2


61,758 e) 67,324 73,855

Refrigeration equivalent (CO2

Refrigeration and cooling generate direct CO2

e) emissions through

leaked refrigerant gases. Reducing the volume and impact of leaks is vital for us to achieve our carbon plan, and is crucial as we grow our business.

2011 2012 2013 2014

Shop water consumed per square ft trading floor area (cubic metres)

0.14 0.12 0.12 0.12

We have set a target to contain the existing refrigerant gases within our estate to a leakage rate of no more than 10% of the entrained volume by 2015. To aid delivery of this target in 2013/14, we have continued to ensure our systems are fitted with leak detection equipment, used independent audit engineers to carry out leak detection and focussed our maintenance and refit programme on refitting shops with the greatest opportunity for improvement.

2011 2012 2013

All years relate to our trading year. Download additional data here


By 2015, reduce leakage of refrigerant to no more than 10% of entrained volume.

Reduce shop water use by 20% per square foot of trading floor area by year-end 2013/14 against a 2010/11 baseline.

Achieved Not achieved Ongoing LOWCARBON REFRIGERATION 2014

From 2013/14, we committed to only using refrigerant gases that have a global-warming potential (GWP) of less than 10 when installing new and replacement refrigeration systems where technically viable. In 2013/14, we installed low-carbon natural refrigeration into all Waitrose new and refurbished shops to achieve this aim. We continue to pioneer water-cooled refrigeration. In addition, we maximise the re-use of waste energy by capturing cold air spill and redistributing it to replace air conditioning and using rejected heat from the refrigeration process to reduce our natural gas consumption.

Monitoring and measuring the performance of our second generation water-cooled refrigeration – as currently being trialled at Waitrose Chipping Sodbury – is an ongoing project, and if successful we intend to roll this out as the enhanced standard for new builds and refurbishments.

For transport refrigeration, this year we have built six refrigerated articulated trailers that can be run without a dedicated fridge engine, getting their power instead from the more efficient truck engine, as well as being plugged into the mains when stationary. These complement six heavy rigid trucks that operate in the same way.


We are committed to managing our water use carefully because we recognise the growing challenge of water scarcity.

Our target was to reduce water consumption per square foot of trading floor area in our shops by 20% by the end of 2013/14, against a 2010/11 baseline. In support of this, we have continued to install low-flush cisterns and waterless urinals in new and refurbished buildings and measured and monitored water usage. However, we did not meet our target and have set an additional target to reduce water consumption per m2

of our

entire estate by 20% by 2020/21 (against a 2010/11 baseline).

In 2014, we will develop a new strategy for our operational water footprint to ensure we make efficient and effective use of water resources. This will address challenges such as building the business case for water reduction when carbon impact and cost remain low. In developing this new strategy, we will take into account the infrastructure, procedural and behavioural change that will deliver reductions. We will establish a roadmap of achievement to ensure our approach is fully linked to our broader environmental aspirations and be responsive to the future legislative changes and amendments to the water market.

In 2013/14, we installed low-carbon natural refrigeration into all Waitrose new and refurbished shops.

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