We have showed that frequency bands of interaction as well as dynamics of energy flow to the point of common coupling (PCC) lead to hybrid system design keys [9]. In case of a given system it is obvious that PCC will be influenced by the disturbances from the load. This can affect the stability for the worst. Related to each power source and the load behaviour, storage devices and control strategy must lead to a good stability of the total system. This paper deals with how to take in to account the segmentation of frequency domain to achieve stability by efficient design of storage and control principle.