We speak of collective self-consumption when the electricity from the same installation is used by more than one consumer. The most common is solar photovoltaic.
Objective: energy self-supply, either total or partial.
Within the modalities of collective self-consumption, the communities of neighbors located in a block of apartments are in the one corresponding to collective self-consumption in an internal network with surplus and compensation.
This is an internal network because the consumers connect directly to the solar panels, without the need for the electricity to pass through the wiring of the electrical distribution network.
Finally, it is an installation with surpluses because the energy not consumed is fed into the grid with economic compensation through a direct deduction of the electricity fed into the monthly bill.