Invention herewith described refers to the hollow plastic tiles made of plastic with a hollow (5) inside of the plastic intended for the flow of fluid that collects solar energy. On the bottom side there is a connection (3) intended for the cold fluid entering, and on the upper side there is the connection (2) for the hot liquid output. The coupling (8) provides the connection to the connection (2) on the lower roe of tiles with the connection (3) on the top row of tiles.
