NOVELTY - The photogenerating canvas (1) comprises a network of solar cells (2) laid out in a sheet encapsulated in a thermoplastic resin. The photogenerating canvas can be rolled up on a parallelopiped tube or pentagonal or hexagonal cross-section so that the solar cells are positioned on the plane parts of the tube. The photogenerating canvas for covering or roofing is equipped with cross-pieces resting in succession on the ground and on two supports, where the supports are of variable height.    USE - In photogenerating devices converting solar energy into electrical energy, in particular in the form of canvases or sheets which can be used for external blinds, manual or provided with electromotors for controlled folding for terraces, loggias, windows and shop-windows, for canopies for caravans and camping-cars, and for covering or roofing of swimming pools.    ADVANTAGE - The mechanism of traditional blinds can be used to integrate the photogenerating blind in new and existing buildings. The photogenerating blinds allow an energy independence including the recharging of vehicle batteries and the electrical supply for lighting systems. The photogenerating blinds and covers have a substantial active surface and lower production costs.    DETAILED DESCRIPTION - The thermoplastic resin is ethylene-vinyl-acetate (EVA). A multilayer plastic film is used to cover the back of the sheet, and the total thickness of the photogenerating canvas is below 3 mm. The exposure to solar radiation produces electric d.c. of 6, 12 or 24 V which is used for supplying apparatus, or controlled, transformed into a.c. and metered before distribution.. The photogenerating covers for swimming pools can be used year-round and the slope can be adapted to the height of the Sun in the season; the slope is 30 deg. in summer and 60 deg. in winter. The photogenerating covers also provide a protection and reduce the thermal loss of water during night.    DESCRIPTION OF DRAWING(S) - The drawing is a perspective view of the photogenerating blind.    Photogenerating canvas (1)    Solar cells (2)