One of the largest breweries in the world decided to invest in active filters to improve over all power quality at one of their sites in Scandinavia. The choice fell on the well proven ADF technology to reduce the disturbances that caused several production stops over the years. It was very difficult to pinpoint the problem, but no one in the production facility could believe that the reoccurring problem could be power quality related. After a comprehensive analysis it was apparent that the production needed ADF technology to reduce the disturbances. One year after the installation the investment has been proven by several all-time high achievements in the production.