NOVELTY - The method of making a structure for producing electricity, comprises stretching a membrane coated with poly vinyl chloride and having flexible photovoltaic cells over a hollow supporting framework, and connecting a protection apron (17) to the membrane in lower and side parts and on side of a roof to mask and protect the smooth ends of the roof. The supporting framework comprises a peripheral framework, which is mounted on an existing construction, and a side board sustained by vertical pillars. The membrane covers a parking surface, and is stretched over an existing roof.    USE - The method is useful for making a structure used as a solar center structure for supplying electricity to electrical devices such as hybrid vehicles with batteries and electrical connections (all claimed).    ADVANTAGE - The method is capable of economically and easily making a lightweight and efficient solar structure, which ensures resistance to weathering and ventilation and avoids the risk of blistering and other damages to the roof when mounted to the construction or hybrid vehicles.    DETAILED DESCRIPTION - The method of making a structure for producing electricity, comprises stretching a membrane coated with poly vinyl chloride and having flexible photovoltaic cells over a hollow supporting framework, and connecting a protection apron (17) to the membrane in lower and side parts and on side of a roof to mask and protect the smooth ends of the roof. The supporting framework comprises a peripheral framework, which is mounted on an existing construction, and a side board sustained by vertical pillars. The membrane covers a parking surface, and is stretched over an existing roof with cables using rods and secured to a rail fixed to the roof at the bottom and/or top of a rake. The photovoltaic cell is fixed on the membrane by coating a paint containing organic semi-conductor, and comprises a free edge through which the cell is welded to the membrane. A barrier layer is fixed on one side of the membrane and exposed to radiation and weather.    DESCRIPTION OF DRAWING(S) - The diagram shows an overall view of a roof that is protected by a solar structure.    Ring (12)    Evacuation hole (13)    Ventilation space (14)    Lateral openings (16)    Apron. (17)