The case study analysis pointed out some key aspects that require special care when conducting an LCA. Although the LCA methodology aims for a high degree of scientific objectivity, all LCA studies make subjective value-driven choices, which may be decisive for the outcome. These value-driven choices are part of the goal and scope definitions, which are essential elements governing the complete LCA study.
As a result, it is also important that a preliminary consensus between all stakeholders on key aspects, especially the value-driven choices, is reached before the LCA study starts.
The next three points highlight some critical aspects on which this preliminary consensus was not systematically reached in the four practical cases under study.
