Supply modality with collective self-consumption with surpluses under compensation: Collective photovoltaic self-consumption consists of a group of consumers reaching an agreement to share a photovoltaic installation. The collective agreement must state who participates (consumers and producers), and what percentage of production corresponds to each consumer, also known as the "distribution coefficient". This modality allows surpluses to be fed into the grid, which will be settled by the distributor of each associated supply point.