In this German project, we replaced 192 units of 400W Metal Halide (MH) lights with our XJ-HBG150W High Bays. Instead of a one-to-one replacement, we conducted a new calculation and arrangement, using just 72 units of XJ-HBG150W High Bays (total 10,800W) to replace the 192 MH lights (total 76,800W). This resulted in an energy savings of up to 86%. The perfect replacement not only provided excellent lighting but also greatly reduced energy consumption, leaving the end user very satisfied with the savings.