OPerational EXcellence serves to improve processes and implement strategic goals. The focus is often on safety, debottlenecking and costs. Even if sustainability "resonates" in the process, it is often not consciously considered. Due to the changed sustainability requirements, however, OPEX is an essential lever for implementing the CO2 reduction targets, for example. In this respect, it is important to consciously take a fresh look at OPEX tasks, both on the part of the company management and in the OPEX organization. Our deep understanding of production interrelationships supports our customers in this.