A system and method for removing debris from solar modules in a solar module array. The system includes an air supply for providing pressurized air to a debris removal wing, a support art configured to support the debris removal wing proximate a solar module, and a support base fixing the support arm to a vehicle, the vehicle operable to advance the debris removal wing along the solar module array. The debris removal wing includes a first air outlet for directed pressurized air to remove debris from the solar modules. The debris removal wing may include a second air outlet for directing pressurized air to at least partly hovering the debris removal wing proximate the solar modules.

A system and method for removing debris from solar modules in a solar module array. The system includes an air supply for providing pressurized air to a debris removal wing, a support art configured to support the debris removal wing proximate a solar module, and a support base fixing the support arm to a vehicle, the vehicle operable to advance the debris removal wing along the solar module array. The debris removal wing includes a first air outlet for directed pressurized air to remove debris from the solar modules. The debris removal wing may include a second air outlet for directing pressurized air to at least partly hovering the debris removal wing proximate the solar modules.

A maintenance vehicle for cleaning a row of solar panels is provided. A vehicle frame is configured to be positioned above a solar panel and extend beyond outer edges of the solar panel. Legs are coupled to the vehicle frame and configured to extend beneath an underside of the solar panel towards a center of the underside of the solar panel. A wheel set of two or more wheels are coupled to each of the legs and configured to roll along two rows of purlins positioned parallel to the row, spaced a distance apart, and coupled to the underside of the solar panel. Each of the purlins has a vertical flange that constrains a sideways motion of the wheel set. One or more drive systems are configured to advance the maintenance vehicle along the row by rotating the wheel set along the two rows of purlins.

A maintenance vehicle for cleaning a row of solar panels is provided. A vehicle frame is configured to be positioned above a solar panel and extend beyond outer edges of the solar panel. Legs are coupled to the vehicle frame and configured to extend beneath an underside of the solar panel towards a center of the underside of the solar panel. A wheel set of two or more wheels are coupled to each of the legs and configured to roll along two rows of purlins positioned parallel to the row, spaced a distance apart, and coupled to the underside of the solar panel. Each of the purlins has a vertical flange that constrains a sideways motion of the wheel set. One or more drive systems are configured to advance the maintenance vehicle along the row by rotating the wheel set along the two rows of purlins.

A functional roof construction arrangement for a roof frame of a building, includes a plurality of functional roof modules being assembled together. Each of the functional roof modules includes a module housing and a roof functional unit which includes three different roof functional panel units selectively supported by the module housing at different levels thereof to provide different functions for the building. The roof functional panel units are selectively configured for selectively providing multiple functions of solar energy collection, thermal insulation, sound insulation, wireless network system, and the like.

A functional roof construction arrangement for a roof frame of a building, includes a plurality of functional roof modules being assembled together. Each of the functional roof modules includes a module housing and a roof functional unit which includes three different roof functional panel units selectively supported by the module housing at different levels thereof to provide different functions for the building. The roof functional panel units are selectively configured for selectively providing multiple functions of solar energy collection, thermal insulation, sound insulation, wireless network system, and the like.

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.

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.

Disclosed embodiments provide apparatuses and techniques for use and construction of a two-axis solar tracking device that closely approximates the efficiency of Vertical Biaxial Trackers but with simplified construction, and thus are cost competitive with uniaxial horizontal tracking systems. The flexible mounting system can accommodate both photovoltaic and solar thermal panels. Disclosed embodiments provide a solar panel stand that provides biaxial tracking for solar energy generation efficiency, with reduced cost and complexity, enabling more off-grid and micro-grid energy generation capabilities.

There is disclosed a photovoltaic solar panel capable of clearing accumulated ice. The panel includes a plurality of photovoltaic cells arranged in a plane with an overlaying glass sheet. The glass sheet has a first side towards the photovoltaic cells and a second side having a flat planar surface. The panel further includes an electrical heating web on the first side of the glass sheet between the sheet and the photovoltaic cells. The electrical heating web is configured to heat the first glass sheet sufficiently to melt the ice where it contacts the flat planar surface to cause the snow and ice to slide off the photovoltaic solar panel when the photovoltaic solar panel is at an angle from the horizontal. The electrical heating web is thermally separated from the photovoltaic cells by a transparent layer of low thermal conductivity.