energy saving and security like no other Waitrose, Nationwide CASE STUDY INFORMATION* Unit powerPerfector Unit size Numerous Install date From Apr 2010 Annual kWh saving (kWh) 3,161,400 Annual cost saving (£) 268,000 * Data for 23 sites T. +44 (0) 207 164 2271 E. enquiries@powerperfector.com W. powerperfector.com As an organisation the John Lewis Partnership has a long- term commitment to improving its environmental perfor- mance, and is making a significant investment to achieve this. This case study shows how VPO has fitted in to an extensive programme of carbon reduction measures within Waitrose and how it can be introduced in a phased manner. Waitrose is one of the UK’s leading retail businesses. What sets it apart are its values and culture. As part of the John Lewis Partnership,

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