Microgrids present tremendous advantages when it comes to resilience of the distribution sector in power systems. The DC supply of such small power networks is also appealing due to more and more site based energy harvesting (e.g. RES generation) and electricity storage that is present at building level, as well as more and more domestic and office appliances are DC native loads or DC compatible. There are increasing number of studies with respect to possible architectures and control schemes of such systems, however there is very little work when it comes to power quality (PQ) aspects. The objective of this work is to make useful qualitative and quantitative appreciations into the possible distortions that might appear on the DC bus supplying the loads in a DC microgrid.