Described is a window (1) for civil and industrial buildings, comprising a load-bearing frame (2) for a pair of sheets (3, 4) made of optically transparent material: a first sheet (3) and a second sheet (4) which have a relative face facing, respectively, towards the outside and towards the inside of a building (9) on which the window (1) is mounted. There are also means (11, 12, 13) for converting the energy of incident sunlight into electricity, by means of the photovoltaic effect interposed between the above-mentioned sheets (3, 4).
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