Process for covering at least one photovoltaic surface comprising the steps of: - providing at least one graphic representation and at least one photovoltaic surface, said graphic representation being adapted to confer aesthetic properties to said photovoltaic surface; - making at least one graphic grid composed of at least one empty area (B) and at least one filled area (D); - associating said graphic representation to said graphic grid to obtain a perforated graphic representation according to said areas (B, D); and - covering at least partially said photovoltaic surface with said perforated graphic representation, wherein the percentage ratio (E) between said areas (B, D) is included between 10% and 90%, and further comprising the steps of: - defining at least one elementary graphic element ; - making said graphic grid composed of a plurality of said elementary graphic elements , said elementary graphic element being a square equipped with a total area (A) equal to the square of at least one size of the side (L) of said elementary graphic element , according to a first relationship A = L 2 and equipped with at least one empty area (B) related to said size of said side (L) and at least the size of at least one filled area (D) of said elementary graphic element , equal to at least the thickness value of said side (L) of said total area (A), according to the second relationship B = (L-2D) 2 . - providing at least one graphic representation and at least one photovoltaic surface, said graphic representation being adapted to confer aesthetic properties to said photovoltaic surface; - making at least one graphic grid composed of at least one empty area (B) and at least one filled area (D); - associating said graphic representation to said graphic grid to obtain a perforated graphic representation according to said areas (B, D); and - covering at least partially said photovoltaic surface with said perforated graphic representation, wherein the percentage ratio (E) between said areas (B, D) is included between 10% and 90%, and further comprising the steps of: - defining at least one elementary graphic element ; - making said graphic grid composed of a plurality of said elementary graphic elements , said elementary graphic element being a square equipped with a total area (A) equal to the square of at least one size of the side (L) of said elementary graphic element , according to a first relationship A = L 2 and equipped with at least one empty area (B) related to said size of said side (L) and at least the size of at least one filled area (D) of said elementary graphic element , equal to at least the thickness value of said side (L) of said total area (A), according to the second relationship B = (L-2D) 2 . - defining at least one elementary graphic element ; - making said graphic grid composed of a plurality of said elementary graphic elements , said elementary graphic element being a square equipped with a total area (A) equal to the square of at least one size of the side (L) of said elementary graphic element , according to a first relationship A = L 2 and equipped with at least one empty area (B) related to said size of said side (L) and at least the size of at least one filled area (D) of said elementary graphic element , equal to at least the thickness value of said side (L) of said total area (A), according to the second relationship B = (L-2D) 2 . <EOS>