This one-to-one discussion brings together two people who come at the same challenge of OPS implementation from slightly different directions. One as the president of trade association which advocates for European and national policies and initiatives toward decarbonised port electrification. The other from a deep engineering background and over 40 years in marine engineering across the maritime and defence sectors and a subject matter expert. This discussion aims to identify areas of contrast adding a more comprehensive view of not only the benefits and regulations, but also the practical constraints!