  The complex and often safety-critical nature of cyber-physical energy systems
makes validation a key challenge in facilitating the energy transition,
especially when it comes to the testing on system level. Reliable and
reproducible validation experiments can be guided by the concept of design of
experiments, which is, however, so far not fully adopted by researchers. This
paper suggests a structured guideline for design of experiments application
within the holistic testing procedure suggested by the European ERIGrid
project. In this paper, a general workflow as well as a practical example are
provided with the aim to give domain experts a basic understanding of design of
experiments compliant testing.
