Abstract: A photovoltaic device, comprising: a photovoltaic generator whose electrical production power varies; an air humidifier device comprising: a storage compartment for atmospheric water vapor; means for heating and injecting the ambient air into the storage compartment; means for cooling and extracting the air flow available at the outlet of the storage compartment; an atmospheric water vapor condenser, which draws in the air flow previously humidified and cooled by the air humidifier device; a management module of the electrical power produced by the photovoltaic generator and used to electrically power the air humidifier device and the condenser device; said means for cooling and extracting the air flow being supplied with a variable electrical power controlled by the value of the surplus of photovoltaic electrical power available, from when the electrical power produced by the photovoltaic generator is greater than said electrical power used by the condenser.

Abstract: Problem addressed: how to decrease the loss of visual quality in an image that appears when this image is placed behind a semitransparent photovoltaic sheet or film. Solution: on the one hand, increase the luminosity of the image by depositing a white-coloured or metallic or reflective layer on the side of the photovoltaic cells that is turned towards the image; and on the other hand, by modifying the luminosity, the contrast, and the colour saturation of the image.

Abstract: The invention relates to a device including a solar panel, a transparent plate serving as a light guide, an image consisting of multiple opaque or semitransparent image areas separated by totally transparent areas or micro-holes exposing said solar panel, wherein said image is printed on or directly arranged against said transparent plate, and a light source propagates the light thereof within the body of said transparent plate. Said device is particularly characterized in that said transparent plate comprises optical means arranged so as to redirect most of the light injected by said light source towards the image areas.

Abstract: An heliostat includes a plane mirror and a first axis of rotation which is positioned parallel to the axis of rotation of the Earth. The solar radiation reflected by the mirror is permanently oriented toward a stationary Fresnel lens which is perpendicular to the first axis of rotation and which concentrates the solar radiation toward a stationary target. A solar field is composed of a plurality of heliostats according to such characteristics and all the first axes of rotation of which are rotated by a mechanical linkage coupled to a rod which is moved by a single motor. This arrangement reduces the total cost of the installation.

Abstract: A display device, in particular digital display screen, with integrated photovoltaic cells, including (a) an array of image zones emitting light or backlit by a light source placed behind the array of image zones, (b) an array formed by a plurality of photovoltaic cells and a plurality of orifices, in which array two neighboring photovoltaic cells form an orifice, and (c) a lenticular array making it possible to focus the light emitted by the image zones into the orifice between two neighboring photovoltaic cells. The lenticular array of the display device is positioned between the array of image zones and the array of photovoltaic cells.

Abstract: A display device, in particular digital display screen, with integrated photovoltaic cells, including (a) an array of image zones emitting light or backlit by a light source placed behind the array of image zones, (b) an array formed by a plurality of photovoltaic cells and a plurality of orifices, in which array two neighboring photovoltaic cells form an orifice, and (c) a lenticular array making it possible to focus the light emitted by the image zones into the orifice between two neighboring photovoltaic cells. The lenticular array of the display device is positioned between the array of image zones and the array of photovoltaic cells.

Abstract: An optical system that allows an image to be displayed on the surface of a solar panel without this image forming an obstacle to direct solar rays. The system includes a solar panel, a lenticular surface formed from linear lenses, and a transparent film on which an image, the straight bands of which, parallel to the longitudinal axis of the lenses, have been removed, is printed. At certain viewing angles, an observer can see only the image bands, whereas at other angles of incidence the sun's rays will pass through the transparent bands and reach the active surface of the solar sensor. The system is particularly suitable for, for example, aesthetic and architectural integration of solar panels, and for disseminating visual information on the surface thereof.

Abstract: An optical system that allows an image to be displayed on the surface of a solar panel without this image forming an obstacle to direct solar rays. The system includes a solar panel, a lenticular surface formed from linear lenses, and a transparent film on which an image, the straight bands of which, parallel to the longitudinal axis of the lenses, have been removed, is printed. At certain viewing angles, an observer can see only the image bands, whereas at other angles of incidence the sun's rays will pass through the transparent bands and reach the active surface of the solar sensor. The system is particularly suitable for, for example, aesthetic and architectural integration of solar panels, and for disseminating visual information on the surface thereof.

Abstract: The present invention comprises a method, and corresponding system, apparatus and memory for trading energy commitments to reduce or increase energy demand (a demand response commitment), to increase or reduce energy production (a supply response commitment) upon demand or to deliver or to not deliver energy (an energy delivery commitment). Such commitments are made available by energy consumers, energy generators and energy delivery companies, respectively, to an entity that provides consideration for these energy commitments and trades them as fungible commodities to energy market participants. In one embodiment, the present invention comprises a method for trading energy commitments to reduce or increase energy consumption, to increase or reduce energy generation, or to deliver energy, comprising receiving a plurality of multi-year energy commitments; providing consideration for each of the multi-year energy commitments; and trading at least one of the plurality of energy commitments upon demand.