System for collecting solar energy, comprising a plurality of collection modules (100a-100c), each collection module (100a-100c) comprising at least one first face (110a-110c) and a second face (120a-120c), opposite to the first face (110a-110c), characterised in that each of the first (110a-110c) and second (120a-120c) faces comprises: • at least one conversion zone (111, 121) comprising a plurality of photovoltaic cells (115, 125), and • at least one reflection zone (112, 122) configured to reflect some of the incident solar rays; in that the reflection zone of the first face and the reflection zone of the second face comprise at least one selective film (114, 124) having selective transmittance and reflectance in relation to the incident solar rays so as to reflect between 10% and 85% of the incident solar rays, the reflection zone of the first face and the reflection zone of the second face thus being configured so as to have some of the incident solar rays pass through them, and in that the system comprises at least one coupling device configured to control the position of the collection modules (110a-110c) so that: • in a first relative position of the collection modules (100a-100c): ∘ incident solar rays arriving on the reflection zone of the first face of a given collection module among the plurality of collection modules (100a-100c): ▪ are partly reflected in the direction of the conversion zone of the second face of a collection module adjacent to said given collection module, and ▪ partly pass through said given collection module, ∘ incident solar rays arrive on the conversion zone of the first face of said given collection module, and • in a second position of the collection modules (100a-100c), ∘ incident solar rays arriving on the reflection zone of the second face of said adjacent collection module are partly reflected in the direction of the conversion zone of the first face of said given collection module, ∘ incident solar rays arrive on the conversion zone of the second face of said adjacent collection module. • at least one conversion zone (111, 121) comprising a plurality of photovoltaic cells (115, 125), and • at least one reflection zone (112, 122) configured to reflect some of the incident solar rays; in that the reflection zone of the first face and the reflection zone of the second face comprise at least one selective film (114, 124) having selective transmittance and reflectance in relation to the incident solar rays so as to reflect between 10% and 85% of the incident solar rays, the reflection zone of the first face and the reflection zone of the second face thus being configured so as to have some of the incident solar rays pass through them, and in that the system comprises at least one coupling device configured to control the position of the collection modules (110a-110c) so that: • in a first relative position of the collection modules (100a-100c): ∘ incident solar rays arriving on the reflection zone of the first face of a given collection module among the plurality of collection modules (100a-100c): ▪ are partly reflected in the direction of the conversion zone of the second face of a collection module adjacent to said given collection module, and ▪ partly pass through said given collection module, ∘ incident solar rays arrive on the conversion zone of the first face of said given collection module, and ∘ incident solar rays arriving on the reflection zone of the first face of a given collection module among the plurality of collection modules (100a-100c): ▪ are partly reflected in the direction of the conversion zone of the second face of a collection module adjacent to said given collection module, and ▪ partly pass through said given collection module, ▪ are partly reflected in the direction of the conversion zone of the second face of a collection module adjacent to said given collection module, and ▪ partly pass through said given collection module, ∘ incident solar rays arrive on the conversion zone of the first face of said given collection module, and • in a second position of the collection modules (100a-100c), ∘ incident solar rays arriving on the reflection zone of the second face of said adjacent collection module are partly reflected in the direction of the conversion zone of the first face of said given collection module, ∘ incident solar rays arrive on the conversion zone of the second face of said adjacent collection module. ∘ incident solar rays arriving on the reflection zone of the second face of said adjacent collection module are partly reflected in the direction of the conversion zone of the first face of said given collection module, ∘ incident solar rays arrive on the conversion zone of the second face of said adjacent collection module.