Allows combining some entities into a more powerful super entity to save space. Combine x amount of entities to create one entity that is x times more powerful.
I was looking at the power differences for the inserters and was wondering if the Super variants of inserters are intended to have a huge power difference. For example, the difference between the Stack Inserter and the Super Stack Inserter is 133kW VS 3.1MW (that is around a 23x increase in power for the 5x default speed increase).