A network for the distribution of electrical power in a building, which includes at least one conductive ring; and said conductive ring: a. comprises a plurality of parallel conductive cables; b. is accessible to provide power to a plurality of electrical devices connected in parallel, and said electrical devices are allowed to be positioned at any point of said conductive ring; c. is associated to a data transmission line, suitable for supporting data exchanges with said electrical devices; d. comprises at least one contact electrodes board, and e. said contact electrodes board has at least three groups of contact electrodes on its perimeter, and f. at least two of said groups of contact electrodes comprise at least a number of electrodes equal to the number of parallel conductive cables comprised in said conductive ring, and said two groups of contact electrodes are designed to connect, each, with the ends of said parallel conductive cables, so as to close said conductive ring; moreover, said at least one conductive ring is characterized in that: g. said parallel conductive cables are comprised in at least one ribbon cable, which is made up, at least in part, of a plurality of conductive tapes placed side by side, in the shape of a flat thin ribbon; h. said contact electrodes board is flat and thin, being formed also by a support with electrical insulating properties on which there are tracks of conductive material on both sides of said contact electrodes board, so as any couple of said tracks of conductive material that are on opposite sides of said contact electrodes board is not in direct electrical contact, and i. on said contact electrodes board, there are configuration holes for the internal contacts arranged to insert contact plugs which pass across said contact electrodes board, in areas of the latter where two conductive material tracks pass, one on each side said contact electrodes board, and j. said contact plugs are suitable for making an electrical contact with one of the two crossed track or with both, and in this last case said contact plugs perform an indirect electrical contact between two conductive material tracks that are on opposite sides of said "contact electrodes board". a. comprises a plurality of parallel conductive cables; b. is accessible to provide power to a plurality of electrical devices connected in parallel, and said electrical devices are allowed to be positioned at any point of said conductive ring; c. is associated to a data transmission line, suitable for supporting data exchanges with said electrical devices; d. comprises at least one contact electrodes board, and e. said contact electrodes board has at least three groups of contact electrodes on its perimeter, and f. at least two of said groups of contact electrodes comprise at least a number of electrodes equal to the number of parallel conductive cables comprised in said conductive ring, and said two groups of contact electrodes are designed to connect, each, with the ends of said parallel conductive cables, so as to close said conductive ring; g. said parallel conductive cables are comprised in at least one ribbon cable, which is made up, at least in part, of a plurality of conductive tapes placed side by side, in the shape of a flat thin ribbon; h. said contact electrodes board is flat and thin, being formed also by a support with electrical insulating properties on which there are tracks of conductive material on both sides of said contact electrodes board, so as any couple of said tracks of conductive material that are on opposite sides of said contact electrodes board is not in direct electrical contact, and i. on said contact electrodes board, there are configuration holes for the internal contacts arranged to insert contact plugs which pass across said contact electrodes board, in areas of the latter where two conductive material tracks pass, one on each side said contact electrodes board, and j. said contact plugs are suitable for making an electrical contact with one of the two crossed track or with both, and in this last case said contact plugs perform an indirect electrical contact between two conductive material tracks that are on opposite sides of said "contact electrodes board".