Abstract: Disclosed are monolithic optical systems using an aerogel molded around a mandrel. A method of manufacturing an optical system includes applying a reflective coating to at least a portion of a surface of a mandrel, placing the mandrel in a tank and subsequently filling the tank with aerogel to a predetermined depth below a top of the mandrel. The method includes adding a separation layer to the tank on top of the aerogel at the predetermined depth, catalyzing the separation layer into a solid, and adding aerogel on top of the separation layer filling the tank with aerogel above a height of the mandrel, and removing the aerogel and mandrel from the tank, drying the aerogel into a solid aerogel structure, catalyzing the reflective coating to bond the reflective coating with the aerogel, and removing the mandrel from the aerogel structure to produce the aerogel structure having a hollowed-out interior.

Abstract: According to a main objective of the present invention, the three-dimensional arrangement of solar cells is adjusted so as to use sunlight directly coming from the sun mainly for solar power generation while transmitting wavelengths necessary for the growth of plants and reflecting wavelengths unnecessary for or hindering the growth of plants among wavelengths of sunlight passing through the solar cells to use the reflected wavelengths for additional solar power generation. Sunlight reflected by the dichroic optical filter may be used to additionally generate electricity using solar cells provided perpendicular to the dichroic optical filter, thereby maximizing the use efficiency of sunlight.

Abstract: Apparatuses, systems, and methods for providing wind-resilient solar panel array fields. The solar panel array fields may have perimeter solar panel racking structures and core solar panel racking structures. The perimeter solar panel racking structures forming at least a perimeter around the core solar panel racking structures to help shield core solar panel racking structures and reduce wind forces applied to the core solar panel racking structures. The perimeter solar panel racking structures may be rigid and may be more wind tolerant than the core solar panel racking structures.

Abstract: Apparatus, methods and systems of wireless power distribution are disclosed. Embodiments involve the redirection of collimated energy to a converter, which stores or converts the energy into a more suitable form of energy for at least one specific point-of-use that is coupled to the converter.

Abstract: The present disclosure provides a method of reducing the thermomechanical stress in the silicon solar cells induced in the interconnection process. The front and rear metal electrodes of the solar cell are provided in such a way that the outermost bonding point between the front metal electrodes and the front interconnects (ribbons or wires) is aligned to the outermost bonding point between the rear metal electrodes and the rear interconnects. The method is applicable to busbar-based interconnection using stringing/tabbing process and wire-based interconnection such as Multi-Busbar and smart wire connection technology. The method can be applied to both mono-facial and bifacial solar cells. The reduced-area busbar end in the busbar-based interconnection increases the tolerance of misalignment of the outermost bonding points introduced by the manufacturing processes.

Abstract: Apparatuses, systems, and methods are provided for controlling one or more assemblies of an energy generation system. The method may include selecting at least a portion of the one or more assemblies, transmitting at least one control signal associated with the selected at least a portion of the one or more assemblies, receiving the control signal at a communication module of the one or more assemblies, and modifying an operational parameter of the one or more assemblies responsive to the received control signal to avoid contact between the one or more assemblies and livestock. The operational parameter may be associated with a position of the at least a portion of the one or more assemblies relative to a ground surface. The operational parameter may additionally or alternatively be a range of angle of the at least a portion of the one or more assemblies.

Abstract: In an example, the present invention provides a solar tracker apparatus configured with an off-set drive assembly. In an example, the apparatus has an inner race structure, which has a cylindrical region coupled to a main body region, the main body comprising an off-set open region. The cylindrical region is an annular sleeve structure coupled to the main body region, which occupies the spatial region within the cylindrical region. In an example, the apparatus has an outer race structure coupled to enclose the inner race structure, configured to couple the inner race structure to allow the inner race structure to move in a rotational manner about a spatial arc region; and configured to allow the inner race structure to pivot about a region normal to a direction of the spatial arc region. In an example, the solar tracker has a clamp assembly that is configured to pivot a torque tube.

Abstract: A freeform optical surface includes, in part, an off-axis optical surface and a departure optical module. The off-axis optical surface may be an off-axis conic optical surface. The departure optical module may be substantially perpendicular to the off-axis conic optical surface.

Abstract: An apparatus including a solar panel having a first end and a second end, wherein the second end is opposite the first end; a first cylinder having a first end rotatably connected to the solar panel at a first pivot point; a second cylinder having a first end rotatably connected to the solar panel at a second pivot point which is different from the first pivot point; a support beam having a first end rotatably connected to the solar panel at a third pivot point which differs from the first and second pivot points and which is between the first and second pivot points; and a base. The first cylinder is configured to raise or lower the first end of the solar panel; while the second cylinder is configured to lower or raise, respectively, the second end of the solar panel.

Abstract: A modular photovoltaic system adapted for collecting light rays from a solar light source to generate electrical current, the system having a light-tracking solar collector adapted to collect the light rays, an edge-lit photovoltaic array, and a transport conduit adapted to transport the light rays to the edge-lit photovoltaic array. The edge-lit photovoltaic array has a plurality of edge-lit photovoltaic panels, each having a transparent diffusing pane positioned between two backing panels with inwardly directed photovoltaic surfaces. Each edge-lit photovoltaic panel perpendicularly contacts a lateral light distributor attached to the transport conduit, causing the transparent diffusing pane to illuminate the photovoltaic surfaces to generate electrical current. The light-tracking solar collector is adapted to rotate to remain oriented toward the solar light source.

Abstract: The present disclosure relates to an image generator device (100) for changing the direction of at least one emitted light cone at a surface (113), comprising an image generator (130) and a fibre optical faceplate (110) having a first (112) and a second surface (113), the fibre optical faceplate (110) being arranged to transmit light from the image generator (130) so at least a part of light entering the first surface (112) of the fibre optical faceplate (110) exits through the second surface (113) of the fibre optical faceplate (110) and pass through an aperture, wherein the fibre optical faceplate (110) comprises a multitude of optical fibres (111) and light exiting the second surface (113) through optical fibres (111) each form an emitted light cone.

Abstract: Apparatuses, systems, and methods are provided for controlling one or more assemblies of an energy generation system. The method may include selecting at least a portion of the one or more assemblies, transmitting at least one control signal associated with the selected at least a portion of the one or more assemblies, receiving the control signal at a communication module of the one or more assemblies, and modifying an operational parameter of the one or more assemblies responsive to the received control signal to avoid contact between the one or more assemblies and livestock. The operational parameter may be associated with a position of the at least a portion of the one or more assemblies relative to a ground surface. The operational parameter may additionally or alternatively be a range of angle of the at least a portion of the one or more assemblies.

Abstract: An apparatus comprises a solar panel or solar tile; and a pultrusion fiber reinforced polymer (PFRP) bracket connected to the solar panel or solar tile. The PFRP bracket mounts the solar panel or solar tile on a roof, and is configured to elevate the solar panel or solar tile a sufficient amount above the roof to enable airflow to occur under the solar panel or solar tile. The PFRP material comprises fibers embedded in a resin matrix. Exemplary fibers are glass, carbon, and synthetic fibers. PFRP products can be formed using a pultrusion method that eliminates outgassing. An intumescent fire barrier can be applied to the PFRP to meet National Fire Protection Association fire endurance codes and standards.

Abstract: Each solar cell 1 includes: a silicon substrate 2; a diffusion layer 3; a first collection electrode 4 contacting the diffusion layer 3; a first connection electrode 5 contacting the diffusion layer 3 and the first collection electrode 4; an insulation layer 7 having an opening portion extending therethrough; a second collection electrode 8 contacting the insulation layer 7 and connected to the single crystal silicon substrate 2 via the opening portion 70; and a second connection electrode 9 contacting the second collection electrode 8. The first connection electrode 5 and the second connection electrode 9 are separated from each other. The second collection electrode 8 and the single crystal silicon substrate 2 are separated from each other via the insulation layer 7 in almost all or all of an overlapping area of each two adjacent PERC solar cells 1.

Abstract: A mounting assembly may include an arced connecting member that includes a first drive chain along a bottom surface of the arced connecting member, a second drive chain positioned adjacent to the first drive chain, and a third drive chain in a gap between the first and the second drive chains. The mounting assembly may include an intermittent-motion drive system that has a drive wheel with a nub extending from a lateral surface of the drive wheel, the nub being shaped to interface with notches included along the third drive chain. The intermittent-motion drive system may include a first and a second protrusion shaped to interface with surfaces of the first and second drive chains, respectively. Rotation of a drive axle extending through the drive wheel may affect rotation of the drive wheel, rotational movement of the nub extending from the drive wheel, and movement of the arced connecting member.

Abstract: A laminated passivation structure of solar cell and a preparation method thereof are disclosed herein. The laminated passivation structure of solar cell includes a P-type silicon substrate, a first dielectric layer, a second dielectric layer, a third dielectric layer and a fourth dielectric layer sequentially arranged on the back surface of the P-type silicon substrate from inside to outside. The preparation method includes generating a first dielectric layer on the back surface of the P-type silicon substrate, and then sequentially depositing a second dielectric layer, a third dielectric layer and a fourth dielectric layer on the first dielectric layer.

Abstract: A decorative radome including a radio-transmissive substrate having a first surface on a first side and a second surface on a second side; and a first surface radio-transmissive decorative coating; methods of manufacturing a PVD coated system include applying a hard coating to the substrate; applying a PVD coating by magnetron sputtering to the substrate; and laser etching one or more of a pattern or a graphic into the PVD coating; and A decorative PVD coated item, comprising: a substrate; a hard coating applied to the substrate; a PVD coating provided on the hard coating and the substrate, wherein the PVD coating is laser etched with one or more of a pattern or a graphic so that the PVD coating is at least partially removed and the pattern or the graphic is revealed as a result of the contrast between the substrate and the PVD coating.

Abstract: A method for control of a cooling device for the active cooling of a perovskite solar cell, wherein the perovskite solar cell is part of a perovskite photovoltaic module. The method includes determining a measure of the internal temperature of the perovskite solar cell and activating the cooling device when the determined measure of the internal temperature of the perovskite solar cell is greater than a corresponding measure of a predetermined temperature threshold value. A photovoltaic apparatus having a perovskite photovoltaic module includes at least one perovskite solar cell, and a cooling device for the active cooling of the perovskite solar cell.

Abstract: A method of making a light converting optical system is described. The method includes providing a layered light trapping structure comprising a first optical layer with a plurality of linear grooves having triangular cross-sections for reflecting and deflecting light through total internal reflection and refraction. A diffuse reflector, made from a thin sheet of diffuse reflective material, is placed parallel to the first optical layer. A light converting film, positioned between the first optical layer and the diffuse reflector, contains an active layer with first and second light converting semiconductor materials of different bandgaps. The thickness of the active layer is below the minimum required to absorb all visible spectrum light in a single passage. The method further involves providing a light source and positioning the layered light trapping structure to receive energy from the light source.

Abstract: An intelligent solar photovoltaic component includes a solar photovoltaic component body and an intelligent junction box located on the solar photovoltaic component body. The intelligent junction box includes multiple solar controllers in communication with one another. Multiple battery strings in the solar photovoltaic component body are in a one-to-one correspondence electrically connected to connection terminals of solar controllers via busbars.

Abstract: Solar panels are mounted on a briefcase, which has a first solar panel array and a second solar panel array. Each solar panel array has at least three panels. The first solar panel array is located on the side of the briefcase. The second solar panel array is located in a slot inside of the briefcase (folded) and can be withdrawn and unfolded on top of the briefcase. The solar panels turn the briefcase into a “complete solar Power Generator” in one compact unit.

Abstract: Systems and methods for providing and controlling solar panel arrays are provided. The solar panel array may include one or more articulating joints that may provide variability in the arrangement of solar panels, which may allow the solar panel array to be distributed over varying types of underlying surfaces. The articulating joints may allow orientations of solar panels to be different relative to one another. The articulating joints may convey rotational force across the joints, so that a rotational force used to drive a first solar panel may also be conveyed across the joint and used to drive a second solar panel. The controls system may include row-specific semi-autonomous, or autonomous, controllers as well as controllers to interface with multiple rows. The controllers may include sensors to measure system power generation and basic operations aspects of the solar field to directly measure, or infer, module shading within the solar field.

Abstract: A solar battery module having high photoelectric conversion efficiency and superior aesthetic appearance. A solar battery module comprises a plate-shaped front-surface protection material having, on an exterior peripheral part, a light-blocking region that blocks light; a plurality of solar battery strings each having a plurality of solar battery cells that are aligned in one line in a first direction and connected, the plurality of solar battery strings being positioned aligned in a second direction that intersects with the first direction on the back side of the front-surface protection material; a plate-shaped or sheet-shaped back-surface protection material positioned on the back side of the plurality of solar battery strings; and a sealing material filled between the front-surface protection material and the back-surface protection material. The solar battery strings are arranged so that a portion of at least one end of the solar battery cells overlaps with the light-blocking region.

Abstract: A method for controlling the orientation of a single-axis solar tracker orientable about an axis of rotation, said method repetitively completing successive control phases, where each control phase implements the following successive steps: a) observing the cloud coverage above the solar tracker; b) comparing the observed cloud coverage with cloud coverage models stored in a database, each cloud coverage model being associated to an orientation setpoint value of the solar tracker; c) matching the observed cloud coverage with a cloud coverage model; d) servo-controlling the orientation of the solar tracker by applying the orientation setpoint value associated to said cloud coverage model retained during step c).

Abstract: A method may include calculating a solar position of the Sun and a projected solar zenith (PSZ) relative to a position of a photovoltaic (PV) module. The method may include determining whether an orientation of the PV module is configurable to prevent shading of an upper substring of the PV module while shading a lower substring of the PV module. Responsive to determining that such an orientation is not configurable, the method may include determining whether the orientation of the PV module is configurable to prevent shading of both the upper substring and the lower substring. Responsive to determining that such an orientation is not configurable, the method may include determining whether the PSZ is within a maximum tracker angle range. A target tracker angle may be identified based on the PSZ and the maximum tracker angle range and used as a tracker angle control setpoint.

Abstract: A solar panel includes a front portion. The front portion includes an electrical insulation layer and a front face sheet layer coupled to the electrical insulation layer. The solar panel also includes a cell coupled to the front portion to produce a tile. The solar panel also includes a back portion coupled to the tile. The back portion includes a honeycomb core layer and a back face sheet layer coupled to the honeycomb core layer.

Abstract: During an installation of solar panels, multiple mounting brackets are attached to solar panel frames. An installer may use a wedge through module frame and mounting bracket slots to securely attach a mounting bracket to a panel frame. A typically installation process is implemented manually with a wedge loaded individually for installation. The cost-effectiveness of this approach works fine within smaller solar deployments but struggles to cost-effectively scale to large solar systems as described below. Embodiments of automatic wedge loading are disclosed for solar panel installation with improved efficiency. The implementation of automatic wedge loading provides an easy and streamlined method to reload wedges on an installation tool. An installer may continue installation process almost un-interruption with ample loaded wedge magazines.

Abstract: An apparatus for generating electricity via thermophotovoltaic (TPV) energy conversion is described. High efficiency is obtained by introducing a material into a combustion chamber that emits bright near-monochromatic visible light upon heating. This light is then directed to fall on an array of photovoltaic (PV) cells which convert the light to electricity. Heat and infrared radiation that is not absorbed by the PV cells is returned to the combustion chamber to further improve conversion efficiency.

Abstract: Disclosed herein are methods, devices, and systems for providing electric vehicle (EV) group charging events. According to one embodiment, an apparatus includes a plurality of electric vehicle (EV) chargers configured to be coupled with an energy source, and a computing device coupled with the plurality of EV chargers. In another embodiment, a method receiving a scheduling availability for the apparatus, receiving user data associated with a plurality of EV users, and determining a first EV user of the plurality of EV users to invite to an EV group charging event based on the user data, and transmitting an invitation for the EV group charging event to a user device associated with the first EV user.

Abstract: The Jackson's Sphere is the only innovation of its kind that optimized the way solar panels collect energy from sunlight, while significantly reducing the time spent on their upkeep and maintenance. This unprecedented device is uniquely designed with durable, high-quality materials to ensure sustainability and complete functionality, in any and all inclement weather situations.

Abstract: There is disclosed ultrahigh-efficiency single- and multi-junction thin-film solar cells. This disclosure is also directed to a substrate-damage-free epitaxial lift-off (“ELO”) process that employs adhesive-free, reliable and lightweight cold-weld bonding to a substrate, such as bonding to plastic or metal foils shaped into compound parabolic metal foil concentrators. By combining low-cost solar cell production and ultrahigh-efficiency of solar intensity-concentrated thin-film solar cells on foil substrates shaped into an integrated collector, as described herein, both lower cost of the module as well as significant cost reductions in the infrastructure is achieved.

Abstract: A bifacial solar module with enhanced power output including first and second transparent support layers, a plurality of electrically interconnected bifacial solar cells arranged between the transparent support layers with gaps between one or more of the interconnected solar cells and edges of the first and second transparent support layers, the bifacial solar cells having a first side directly exposed to solar radiation and a second side opposite the first. The bifacial solar module further includes one or more micro-structured reflective tapes positioned coincidentally with the gaps and attached to a surface of the second support layer such that light passing through the second support layer is reflected back into the second support layer at angles such that light reflecting from the tape is absorbed by either the first or second side of the bifacial solar cells.

Abstract: Aspects of the disclosure provide a solar device and a method for making the solar device. The solar device can include solar cells configured to form a solar cell string with at least a string terminal, and an insulated interconnector including two conductive ends configured to connect the string terminal to peripheral circuitry of the solar device. The method can include disposing the solar cells to form a solar cell string with at least a string terminal, and disposing an insulated interconnector with two conductive ends to connect the string terminal to peripheral circuitry of the solar device.

Abstract: A first plurality of roofing shingles installed in a first plurality of rows on a roof deck, and a second plurality of roofing shingles installed in a second plurality of rows. An edge of one of the second roofing shingles in each of the second rows is offset from the edge of another one of the second roofing shingles in another adjacent one of the second rows. An edge of a first photovoltaic shingle is juxtaposed with the edge of a first roofing shingle of the second roofing shingles in a first row of the second rows. The edge of at least another photovoltaic shingle in at least one of another row of the second rows is substantially aligned with the edge of the first photovoltaic shingle. An additional roofing shingle is installed intermediate one of the second roofing shingles and one of the photovoltaic shingles.

Abstract: The present invention relates to an array solar power generation device, comprising a plurality of solar panels, a frame unit, a support unit and at least one reflecting device.

Abstract: A roof mount system supports a solar panel above a roof and includes a base positioned on the roof and a first fastener connected to the base and extending away from the roof and moveable along the base in a direction generally parallel to the roof. A first clamp supports a bottom surface of a solar panel frame and adjusts the height of the solar panel above the roof by moving the first clamp along a first fastener in a direction perpendicular to the roof. A second clamp is connected to a second fastener and moves with respect to the first clamp perpendicular to the roof. The solar panel is clamped between the first clamp and the second clamp portion. A protrusion extends from the first or second clamp to form an electrical bond between the solar panel frame and the respective first or second clamp.

Abstract: Device structures, apparatuses, and methods are disclosed for photovoltaic cells that may be a single-junction or multijunction solar cells, with at least a first layer comprising a group-IV semiconductor in which part of the cell comprises a second layer comprising a III-V semiconductor or group-IV semiconductor having a different composition than the group-IV semiconductor of the first layer, such that a heterostructure is formed between the first and second layers.

Abstract: [Problem]To propose a simplified configuration with which a solar power generation device can be easily and quickly assembled and installed and to propose a solar power generation device configuration with which the wind resistance is preferably more reduced. [Solution] The solar power generation device supporting frame integrated with a solar power generation panel is fixed to at least one of a plurality of supporting poles projected upward from an installation base surface, has a rod-like body appearance, and has a solar power generation panel integrally provided at least along the upper side curved surface thereof without being separated from the upper side curved surface. Preferably, the solar power generation device supporting frame integrated with the solar power generation panel is fixed to the supporting poles horizontally.

Abstract: A hybrid solar window comprises: at least one glazing; a wave-length-selective solar mirror positioned to reflect IR toward an IR absorbing element. The IR absorbing elements comprises a conduit having a respective fluid inlet and fluid outlet, and an IR absorbing compound, wherein the IR absorbing compound is in thermal communication with the conduit. The wavelength-selective solar mirror has an average visible light transmittance of at least 50 percent and an average IR reflectance of at least 50 percent over the wavelength range of 850 to 1150 nanometers, inclusive. The IR absorbing element is configured to transfer thermal energy to a heat transfer fluid circulating through the conduit, wherein the IR absorbing element has an average visible light transmittance of at least 30 percent, and wherein each IR absorbing element has an average IR absorptance of at least 50 percent over the wavelength range 850 to 1150 nanometers, inclusive. Certain IR absorbing elements are also disclosed.

Abstract: Methods and systems of managing dynamic response to wind in a solar tracker system are provided. The method includes determining a wind speed, comparing the wind speed to a predetermined threshold value to determine if the wind speed equals or exceeds the predetermined threshold, positioning a windward most solar tracker to a predetermined angle based on the comparing, and positioning a leeward most solar tracker to the predetermined angle based on the comparing. The solar trackers are positioned at the predetermined angle at a predetermined interval starting at the windward most solar tracker and the remaining solar trackers remain in a normal operating condition.

Abstract: A system includes at least one photovoltaic module installed on a roof deck, at least one electrical connector electrically connected to the photovoltaic module, and at least one electrical component electrically and removably connected to the electrical connector. The electrical component includes a housing and an electronic component located within the housing. The electronic component includes at least one of an optimizer, a rapid shutdown device, or an inverter. The electrical component is separate from the photovoltaic module and is configured to be disconnected from the electrical connector while the photovoltaic module remains installed on the roof deck.

Abstract: The HCPV system includes a plurality of modules connected to an array, a casing, a plurality of inverted pyramids, a plurality of solar cells, and a backplate. Each module includes an optical component that concentrates light onto a single solar cell and a single inverted pyramid with solid lateral faces connects the optical component at a peripheral edge of a base of the pyramid to the single solar cell at an apex of the inverted pyramid. The casing has a top frame and a bottom frame. The top frame surrounds each optical component on the peripheral edge of the pyramid, and the bottom frame surrounds each solar cell on the apex of the pyramid. The top frame and bottom frame are separated by a plurality of supports. The backplate is a plurality of interconnected circular pads.

Abstract: A self-contained clean energy system includes mirrors that amplify and reflect light received from a battery-powered LED to an angled chamber lined with alternating solar cells and mirrors to power the system and to further power LED lights in similar systems in communication with the clean energy system, which is independent of a power grid.

Abstract: The invention discloses a universal sun-tracking adjustment device, method and system, which are applied to a solar lamp with a universal sun-tracking adjustment device. The solar lamp comprises a lamp body and a lamp holder. The universal sun-tracking adjustment device comprises a lamp body, a lamp holder and an adjusting device. Light intensity information can be acquired by photosensitive sensors on the lamp body and be transmitted to a main control circuit board, and the main control circuit board can control the adjusting device to change the angle of a solar photovoltaic panel on the lamp body with the change of the position of the sun, such that the charging efficiency of the solar photovoltaic panel is improved.

Abstract: One embodiment relates to a method of fabricating a solar cell. A silicon lamina is cleaved from the silicon substrate. The backside of the silicon lamina includes the P-type and N-type doped regions. A metal foil is attached to the backside of the silicon lamina. The metal foil may be used advantageously as a built-in carrier for handling the silicon lamina during processing of a frontside of the silicon lamina. Another embodiment relates to a solar cell that includes a silicon lamina having P-type and N-type doped regions on the backside. A metal foil is adhered to the backside of the lamina, and there are contacts formed between the metal foil and the doped regions. Other embodiments, aspects and features are also disclosed.

Abstract: A solar tracking and solar energy generation system including a solar panel apparatus, which includes a main power generating solar panel; first and second tracking wings situated on either side and on a same plane as the main solar panel, the tracking wings each having upper and lower solar panels each with solar cells, the upper and lower solar panels are offset with respect to each other by a predetermined angle; the system including a tracking motor electrically coupled to the main solar panel, the tracking motor, upon receipt of a requisite voltage, configured to move the main solar panel incrementally in a direction corresponding to the direction of the sun's motion throughout the day; and a comparator circuit electrically connected to the tracking wings, the comparator circuit configured to generate an input voltage signal to the control circuit to drive the motor.

Abstract: Methods and systems stowing one or more photovoltaic (PV) modules based on a weather event forecasts are provided. In one embodiment, a method may include receiving a weather event forecast, such as a snow event forecast, for a location of a tracking system that includes a plurality of PV modules, determining that the weather event forecast for the location of the tracking system exceeds a threshold level of severity, and automatically positioning the plurality of PV modules at the location of the tracking system into a stow configuration. In some embodiments, the method may further require receiving confirmation of the weather event from a sensor at the location of the tracking system before positioning the PV modules in the stow configuration.

Abstract: A wind turbine includes twin cross-flow turbines connected to a generator. The generator includes a shaft configured to be rotated when the turbines rotate. The wind turbine includes a first turbine rotatably movable around a first axis of rotation and including several blades distributed around the first axis of rotation. A second turbine is rotatably movable around a second axis of rotation and includes several blades distributed around the second axis of rotation. The first axis of rotation and the second axis of rotation are symmetrical to each other relative to a vertical axis. The first axis of rotation and the second axis of rotation are inclined relative to the vertical axis at an angle of inclination of between 25° and 50°.

Abstract: A reflective concentrator can include a primary reflector and a secondary reflector located radially outward of the primary reflector. The primary reflector can be a rotationally-symmetric, convex conical shape, radial sections of which may include an off-axis parabolic reflector with a focal point radially outward of the primary reflector. A secondary reflector may be located radially outward of the primary reflector, and may include a rotationally symmetric section of a toroidal space surrounding the primary reflector. In some embodiments, the secondary reflector may be convex or concave. Incident sunlight generally aligned with a rotational axis of symmetry of the primary reflector may be reflected off of the primary reflector, off of the secondary reflector, and back towards a point near the central peak of the primary reflector. The reflective concentrator may be aerodynamically stable, and may include an aerodynamic fairing on its read side to further increase the aerodynamic stability of the structure.

Abstract: A Multiple Bifacial Photovoltaic Transparent Panels Thermal Triangles Reflective Minors Ensemble system which is configured to be oriented towards the sun and relative to the horizon, the mirrors reflecting the sunray to the bifacial PV panels front, back and underside faces. There is a plurality of rhombus or trapeze shaped sunray path openings, mounted on a small footprint, above a two axes tracking mechanism. Further, an Micro-Electric Power Station MEPS capable of obtaining energy from a plurality of Rear/Back and side sun ray reflectors sources, located in between various bifacial photovoltaic transparent solar thermal panels. The reflector sources may include an integrated laminated mirror film around the inside of a casing/envelope of a rhombus thin (e.g. glass) box or of transparent sunrays magnifying concentrator envelope balloon. The MEPS facility may be mounted above streets and traffic junctions, on a structure which may be referred to as Micro-Grid Electric Pylons MGEP.