A light-concentrating, solar system, comprising: a first Fresnel lens (111) provided with at least one tooth face, wherein each tooth face contains at least one Fresnel unit; two reflective faces (112, 113) arranged to enable incident sunlight to converge via the first Fresnel lens (111), and then to irradiate to a first reflective face (112), and at least part of the incident sunlight to be reflected onto a second reflective face (113) by the first reflective face (112); and a photovoltaic panel (114) arranged to enable at least part of the sunlight reflected by the second reflective face (113) to directly irradiate to or be led to irradiate to the photovoltaic panel (114). Since a twice-reflection structure is adopted, on one hand, the system can provide a higher light-concentration ratio; on the other hand, the height of the system can be reduced; and at the same time, a structural design of the system has better flexibility, so that a peripheral design, such as heat dissipation or heat energy utilization, of a photovoltaic panel can be performed more easily.

A solar-collector roofing assembly (10) comprises a plurality of elongate spaced-apart primary support members (12) aligned in a horizontal plane and extending in a first direction A; a plurality of elongate spaced-apart secondary support members (14) having first and second end portions (38, 40) connected to corresponding said primary support members (12), first and second end portions (38, 40) on a respective primary support member (12) being vertically offset relative to each other; and at least one solar-energy collector panel (16) directly or indirectly supported by the secondary support members (14) so as to have a predetermined fall towards an associated primary support member (12).

A solar-collector roofing assembly (10) comprises a plurality of elongate spaced-apart primary support members (12) aligned in a horizontal plane and extending in a first direction A; a plurality of elongate spaced-apart secondary support members (14) having first and second end portions (38, 40) connected to corresponding said primary support members (12), first and second end portions (38, 40) on a respective primary support member (12) being vertically offset relative to each other; and at least one solar-energy collector panel (16) directly or indirectly supported by the secondary support members (14) so as to have a predetermined fall towards an associated primary support member (12).

Photovoltaic system includes i) a first photovoltaic panel (11) comprising a first and a second edge (111, 112) between which the panel extends in length; ii) a support means (2) for supporting the first panel (11); the support means (2) being at least in part made of concrete, defining a ballast of the first panel (11) and including:a first and a second support zone (21, 22); the distance from the first edge (111) of the first zone (21) being smaller than the distance from the first edge (111) of the second zone (22);a third support zone (23) whose distance from the first edge (111) is intermediate with respect to the distance from the first edge (111) of the first and of the second support zone (21, 22);a first bracket (231) constrained to the third support zone (23) and protruding away from the third support zone (23); and a first gripping means (230) for gripping the first panel (11) supported by the first bracket (231).

Disclosed is an air-compression energy-storage and power-supply system having air purification capability through using solar energy. The system includes: a solar energy power supply device, it utilizes solar energy to produce power for the system itself, and for users to use in daytime; an air purification device, with its exhaust fan connected to a transformer power distribution device to obtain the power for rotation, so that outside air flows into the air cylinder after filtering by the air filter, then the purified air is exited from the air cylinder to provide purified air; an air-compression energy-storage and power-supply device, used to compress the purified air into high pressure for storage, and the high pressure purified air is released at night, for the generator to produce power for user to use at night; and a wind power transmission device, disposed above the air purification device.

Disclosed is an air-compression energy-storage and power-supply system having air purification capability through using solar energy. The system includes: a solar energy power supply device, it utilizes solar energy to produce power for the system itself, and for users to use in daytime; an air purification device, with its exhaust fan connected to a transformer power distribution device to obtain the power for rotation, so that outside air flows into the air cylinder after filtering by the air filter, then the purified air is exited from the air cylinder to provide purified air; an air-compression energy-storage and power-supply device, used to compress the purified air into high pressure for storage, and the high pressure purified air is released at night, for the generator to produce power for user to use at night; and a wind power transmission device, disposed above the air purification device.

Rooftop photovoltaic solar systems and methods for installing interconnection wiring for photovoltaic solar systems. Cabling systems can include cable support stands secured underneath shingles. Cabling systems can include molded rubber raceways mounted using raceway clips secured underneath shingles.

A solar tracker includes a rotatable portion including a plurality of solar modules, at least a portion of each of the modules being arranged in a row and electrically coupled to each other in series to define at least one string. A motor is operatively coupled to the rotatable portion and configured to supply torque to the rotatable portion for rotating the rotatable portion about an axis. At least one electrical characteristic sensor and at least one controller are in operative communication with the motor and with the at least one electrical characteristic sensor. The at least one controller is configured to instruct the motor to supply torque to the rotatable portion in response to one or more signals received by the at least one controller from the at least one electrical characteristic sensor. A method of operating a solar tracking system is also disclosed.

A hybrid solar cell includes a photovoltaic (PV) cell having an upper grid and lower contact plate with an anode and cathode region in between. A thermoelectric (TE) cell has a top and bottom segmented connector layer with TE elements having pairs of n-doped elements and p-doped elements connected together electrically in series and thermally in parallel by segments of the top or bottom segmented connector layer. An electrically insulating and thermally conducting layer is between the plate and the TE cell. A direct electrical connection is between the cathode region provided by the upper grid or lower plate and segments contacting the n-doped elements, and a direct electrical connection is between the anode region provided by the grid or plate and segments contacting the p-doped elements for the PV cell to power the TE cell and the TE cell to provide active cooling for the PV cell.

A hybrid solar cell includes a photovoltaic (PV) cell having an upper grid and lower contact plate with an anode and cathode region in between. A thermoelectric (TE) cell has a top and bottom segmented connector layer with TE elements having pairs of n-doped elements and p-doped elements connected together electrically in series and thermally in parallel by segments of the top or bottom segmented connector layer. An electrically insulating and thermally conducting layer is between the plate and the TE cell. A direct electrical connection is between the cathode region provided by the upper grid or lower plate and segments contacting the n-doped elements, and a direct electrical connection is between the anode region provided by the grid or plate and segments contacting the p-doped elements for the PV cell to power the TE cell and the TE cell to provide active cooling for the PV cell.