Klépierre, the European leader in shopping centers, becomes the largest real estate portfolio in the world by value to be BREEAM In-Use certified for sustainable asset performance across every one of its malls, with a typical score of “Very Good.” The Group went beyond the traditional asset per asset certification approach to adopt a whole-portfolio one thanks to an innovative, long-term partnership with BRE, the certification body, and Longevity Partners, the pan-European firm specialized in energy and responsible property investment.