In 2010, Migros wrote in a press release: "Refrigerated cabinets are the biggest consumers of electricity in stores. They account for up to 70 percent of energy consumption." It went on to say: "Glass doors can save between 20 and 50 percent energy." So I thought to myself: good, they've realized it and will do better. Unfortunately, no... In 2021, the Migros store in Zurich's main train station was renovated. And instead of closed refrigerated shelves, everything is the same as before: metre-long open refrigerated shelves. In addition to the cold that escapes here, the walls of the open coolers are warmed up with heating coils to prevent ice from forming. Migros explains that the changeover is underway. (Balance 16/2022) So why is the knowledge gained in 2010 not being implemented for renovations in 2021? Why has the insight not been implemented continuously since 2010? Comparison: Rewe in Germany already equipped its stores with closed cooling shelves as standard and across the board several years ago. Without any loss of sales. (Balance 16/2022) I am disappointed. Even 40 years ago, I asked myself what the open refrigerated shelves were for. I learned at home from an early age that a lot of energy is lost if the fridge door is not closed quickly. Why doesn't Migros do this?