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.

Systems and methods that provide trackers and tracking assemblies having node managers, such as smart node managers are described herein. Aspects of the disclosure are directed to an autonomous energy distribution network including a plurality of solar tracker devices configured to receive solar energy and transform the solar energy into electrical energy, where each of the solar tracker devices is directly connected to a node in a power distribution grid. The network also includes a node manager configured to receive status information from the solar trackers, where the status information includes information regarding the state of the node to which each of the solar tracker device are directly connected.

A novel portable solar energy system includes a solar concentrator, a thermal storage device, an azimuth adjustment system, an elevation system, and a heat exchanger, all mounted on a rotatable support frame. In a particular embodiment, the thermal storage device remains at a fixed vertical height and fixed tilt orientation when adjustments are made to the azimuth adjustment system and/or the elevation adjustment system.

A mechanical solar tracking and solar concentrating system having a Fresnel lens, moveable frame, track, retaining mechanism, and solar collector. The lens focuses solar energy at the collector; the frame holds the collector and lens, keeping them aligned as the frame rotates; and the track guides the frame to maintain a perpendicular orientation to the Sun. The solar collector receives the Sun's rays and the retaining mechanism releases, at established intervals, allowing the frame to rotate to the next location. The cycle repeats, tracking the Sun and concentrating its rays at a focal point, to generate temperatures at the focal point in excess of 500 C. These high temperatures can be exploited in several applications, such as producing drinking water from dirty water; cooking food; disinfecting medical instruments; accelerating fermentation of certain types of flora to produce electricity; generating work for generic purposes; etc.

A mechanical solar tracking and solar concentrating system having a Fresnel lens, moving frame, track, retaining mechanism, and solar collector. The lens focuses solar energy at the collector; the frame holds the collector and lens, keeping them aligned as the frame rotates; the track guides the frame to maintain a perpendicular orientation to the Sun; the solar collector receives the Sun's rays; and the retaining mechanism releases at established intervals, allowing the frame to rotate to the next location. The cycle repeats, tracking the Sun and concentrating its rays at a focal point, to generate temperatures at the focal point in excess of 500 C. These high temperatures can be exploited in several applications, such as producing drinking water from dirty water; cooking food; disinfecting medical instruments; accelerating fermentation of certain types of flora to produce electricity; generating work for generic purposes; etc.

The disclosed invention relates to solar-thermal receiver tubes for heating high-temperature fluids such as molten salts and oils, such as those used in conjunction with trough reflectors or concentric concentrators. The disclosed invention utilizes fused silica receiver tube assemblies that provide optical absorption by way of optically-absorbing media that is imbedded within the thermal transfer fluid, preferably comprising inorganic dyes that comprise pulverized thin film coatings or dissolved materials that are specifically designed for maximizing optical absorption. Alternatively, the chemistry of the transfer fluid can be modified to increase optical absorption, or the optically absorbing media may comprise fine powders with density preferably similar to the thermal transfer fluid, such as fine graphite powder; or, in another preferred embodiment, absorbing means within the heat transfer fluid comprise a solid absorbing element disposed along the central axis of the receiver tube's interior.

A novel portable solar energy system includes a solar concentrator, a thermal storage device, an azimuth adjustment system, an elevation system, and a heat exchanger, all mounted on a rotatable support frame. In a particular embodiment, the thermal storage device remains at a fixed vertical height and fixed tilt orientation when adjustments are made to the azimuth adjustment system and/or the elevation adjustment system.

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.

A solar concentrator may have a horizontal circular track on the ground, a tower centered on a vertical axis of the track, and a rotatable structure around the track having an upper, concave mounting surface approximating the shape of part of a sphere centered on the top of the tower. Articulated concave mirrors are attached to the rotatable structure, and the mirrors have a focal length approximately equal to the radius of a sphere portion formed by the concave mounting surface. Sunlight is focused at a receiver mounted atop the tower, and the receiver may convert sunlight into thermal or electrical energy. As the position of the Sun changes, sunlight is maintained on the receiver by turning the rotatable structure toward the Sun, turning the receiver about said vertical axis to face the mirrors, and articulating the mirrors toward the receiver in response to the changing elevation of the Sun.

A solar collector may include a frame for supporting a plurality of photovoltaic (PV) panels. The frame may be adapted to removably attach to a base. The solar collector may include a first panel assembly, including at least one of the plurality of PV panels, pivotally attached to the frame about a first axis. The solar collector may also include a second panel assembly, including at least one of the plurality of PV panels, pivotally attached to the first panel assembly. The second panel assembly may collectively move with the first panel assembly about the first axis and to pivot relative to the frame, and to pivot about a second axis that is substantially parallel to and radially offset from the first axis, to move between a deployed position and a retracted position.