Complexity science aims to better understand the processes of both natural and man-made systems
which are composed of many interacting entities at different scales. A disaggregated approach
is proposed for simulating electricity systems by using agent-based models coupled to
continuous ones. The approach can help in acquiring a better understanding of the operation of
the system itself e.g. on emergent phenomena or scale effects as well as in the improvement
and design of future smart grids.