The journalist Mélanie Zuber wrote in the MIGROS Journal and interesting article explaining the KIGO effect: « The MIGROS also installed radiant panels in another stores, just like it had done in its Sion supermarket in 2006. This new technology proved to be so exciting that we will likely see it applied to all new MIGROS stores will build in the Valais. The KIGO panels are responsible to heat and cool the whole store; it is made up of multiple tiles including multiple thin water channels. During the winter, the water circulates at 35°C (95 F) while traditional radiators would require 80°C (175 F). The heat required in this process comes from recycling: we obtain the necessary heat from the refrigerating units coupled with a heat pump. A gas boiler is always available if additional energy may be required. We obviously know that one cannot create cold without generating a lot of heat. Reusing this heat into the site’s heating system, we can generate large energy cost savings and we participate in the reduction of CO2 emission. As for water used for the cooling, it is drawn from the ground water at a depth of 24 meters. It cools down the water used and is then returned to a depth of 25 meters. It is sourced at a temperature of 12°C (54 F) and returns with a temperatur diffrence of 4°C in order not to affect the biotope of the aquifer. Outside these technical considerations, we must also signal that the radiant panels diffuses softly a uniform temperature, increasing the comfort of the clients and employees of the Métropole. »