A dual-source facility power system includes a first electrical interface configured to receive DC power from at least one photovoltaic panel; a second electrical interface configured to receive AC power from an electric utility grid; a third electrical interface configured to deliver AC power to one or more branch circuits or appliances; and a controller. The controller is configured to monitor characteristics of AC power received from the electric utility grid. When one or more such characteristics fail to meet one or more predetermined specifications, the controller is further configured to disconnect the second electrical interface; deliver, to one or more branch circuits or appliances, AC power derived from DC power received from the at least one photovoltaic panel; and individually monitor AC current delivered to one or more of the branch circuits or appliances.

A structure comprises at least one outer wall having an internal wall section and an outer wall section with an air flow passage therebetween. A circulation system circulates air through the flow passage to inhibit moisture accumulation and mold growth. A sensing system determines the presence of moisture in the flow passage and generates a signal in response thereto. A controller receives the signal from the sensing system and controls the circulation system to maintain a predetermined temperature and relative humidity in the flow passage.

A utility management system and method including a water collection apparatus; a water storage apparatus in fluid communication with the water collection apparatus; a water storage quantity sensor; one or more water usage sensors; an energy generation apparatus; an energy storage apparatus coupled to the energy generation apparatus; an energy storage quantity sensor; one or more energy usage sensors; a processor with one or more channels to receive at least weather forecast data, water usage data, and energy usage data, and one or more channels to send at least a request for weather forecast data, wherein the processor is coupled to the one or more water usage sensors and energy usage sensors, and wherein the processor is programmed to use the received data to project water collection, water storage, energy generation, and energy storage and to formulate recommendations for water and energy usage; a control interface; and a data display.

A solar plant and single axis solar tracker management method maximize power output production. The object of the invention embraces a solar plant and a method accounting for readings being made by field sensors whilst weather forecast data are provided by third parties such as weather forecast companies collecting and broadcasting weather forecast data related to sun irradiance levels and climate conditions affecting sun irradiance levels, like clouds, pollution or fog. Some of the solar trackers of the plant are furnished with irradiance sensors, whilst the solar plant has a plurality of solar sensors arranged along; these solar sensors being configured to measure irradiance on a horizontal plane. The object of the invention envisages an outpost solar tracker configured to take radiation measurements in an inclined plane and, when it is necessary to verify the measurements of the horizontal sensors, they will go to 0° positions.

Disclosed is a system of cladding along an existing exterior wall of a building featuring a plurality of Z-shaped components deployed in a parallel spaced apart arrangement, with an insulation panel in between two of the Z-shaped components. The Z-shaped components having a J-wall to enforce a moisture gap between exterior wall paneling and insulation. The Z-shaped components may feature Edge-components when the line of insulation panels needs to be interrupted or when it reaches a corner or edge of a wall.

A method for computer-implemented prediction of power production of a wind farm includes: obtaining first weather forecast data for a first time period, obtaining first power production data for the first time period, obtaining second weather forecast data for a second time period; determining second power production data for the second time period by processing the first weather forecast data, the first power production data and the second weather forecast data by a trained recurrent neural network, where the first weather forecast data, the first power production data and the second weather forecast data are fed as a digital input to the trained recurrent neural network and the recurrent neural network provides the second power production data as a digital output, the second power production data being a prediction of power production for the second time period.

A communication cable composition, and a wire and a cable coated with same. the communication cable composition comprises 0.1-5 parts by weight of an antioxidant and 0.1-5 parts by weight of a lubricant with respect to 100 parts by weight of at least one polypropylene resin selected from among a thermoplastic olefin, a polypropylene block copolymer, and a polypropylene homopolymer. It A communication cable resin composition according to present disclosure has excellent communication performance, heat resistance, oil resistance, and chemical resistance by using a base resin and an antioxidant, wherein various polypropylene resins are used alone or, as appropriate, in combinations as the base resin. An insulated wire and a communication cable coated with such a composition improves the stability of the cable by increasing chemical resistance and oil resistance. In addition, the insulated wire and the communication cable increase heat resistance to the UL 105° C. level.

A high frequency signal transmission cable includes a conductor, an insulator provided over a periphery of the conductor, a plating layer provided over a periphery of the insulator, and a sheath provided over a periphery of the plating layer. A crack suppressing layer is provided between the insulator and the plating layer, in such a manner as to remain in contact with the insulator while being provided with the plating layer over an outer surface of that crack suppressing layer. The crack suppressing layer is composed of a resin film to suppress the occurrence of a cracking in the plating layer by bending while moving in a longitudinal direction of the cable relative to a bending of the insulator.

A method and apparatus for controlling power production. In one embodiment, the method comprises determining a predicted weather event; determining a predicted power production impact for a distributed generator (DG) array based on the predicted weather event; and controlling power production from one or more components of the DG array to compensate for the predicted power production impact.

A photovoltaic system providing both grid-tie and back-up operation comprises an inverter having a first, voltage-controlled output for powering appliances, and a second, current-controlled output for grid back-feed. The second output may have a current-controlled mode when connected to the grid and a voltage-controlled mode otherwise. The first and second outputs comprise independent switching transistors, which however may be driven by the same switching control signals, such that the voltage controlled-output mimics the voltage on the current-controlled output when it is connected to the grid, and therefore tracks the grid voltage. Grid isolation relays disconnect the current-controlled inverter output from the grid if it fails. A connection bypassing the grid isolation relay is monitored by the controller for the presence and stability of the grid supply when it resumes. Both outputs follow the voltage on the voltage-controlled output when the current-controlled output is not connected to the grid.