A system and method for correcting short term irradiance prediction for control of a photovoltaic power station includes an irradiance data manager that generates an observed irradiance curve based on irradiance measurements received from an irradiation sensor, and a reference curve generation engine that generates a reference curve representative of irradiance values for a clear sky day. An irradiance prediction engine generates an irradiance prediction curve based on image segmentation and motion filtering of cloud pixels in sky images. A prediction correction engine corrects the irradiance prediction curve within a short term future time interval based on probabilistic analysis of time segmented intervals of the observed irradiance curve, the reference curve, and the irradiance prediction curve.

A system and method for correcting short term irradiance prediction for control of a photovoltaic power station includes an irradiance data manager that generates an observed irradiance curve based on irradiance measurements received from an irradiation sensor, and a reference curve generation engine that generates a reference curve representative of irradiance values for a clear sky day. An irradiance prediction engine generates an irradiance prediction curve based on image segmentation and motion filtering of cloud pixels in sky images. A prediction correction engine corrects the irradiance prediction curve within a short term future time interval based on probabilistic analysis of time segmented intervals of the observed irradiance curve, the reference curve, and the irradiance prediction curve.

Method of forecasting heat output of a solar collector. First, heat output for a plurality of solar collectors is simulated, located at respectively different geographic locations but having the same solar collector settings as the solar collector to be forecasted. The simulation is performed by calculating a dataset of theoretical heat outputs for the plurality of solar collectors, based on acquired 802 related weather data. From the calculated dataset a function is adjusted 810, the function defining the theoretical heat output of any solar collector related to its geographic location, e.g. latitude, solar Direct Normal Irradiation, DNI, and collector settings, e.g. operation temperature, and forecasting the heat output of the solar collector based on the adjusted function.

Method of forecasting heat output of a solar collector. First, heat output for a plurality of solar collectors is simulated, located at respectively different geographic locations but having the same solar collector settings as the solar collector to be forecasted. The simulation is performed by calculating a dataset of theoretical heat outputs for the plurality of solar collectors, based on acquired 802 related weather data. From the calculated dataset a function is adjusted 810, the function defining the theoretical heat output of any solar collector related to its geographic location, e.g. latitude, solar Direct Normal Irradiation, DNI, and collector settings, e.g. operation temperature, and forecasting the heat output of the solar collector based on the adjusted function.

A computer system is configured to group solar power systems that provide electric power to an electricity distribution system into clusters. The computer system identifies a solar source meter in each of the clusters that is representative of the respective one of the clusters as a bellwether meter. Each of the bellwether meters monitors a power output of one of the solar power systems in one of the clusters. The computer system receives solar power generation data from the bellwether meters. The computer system generates a solar power generation forecast for each of the clusters of the solar power systems using the solar power generation data from the bellwether meters in respective ones of the clusters.

A computer system is configured to group solar power systems that provide electric power to an electricity distribution system into clusters. The computer system identifies a solar source meter in each of the clusters that is representative of the respective one of the clusters as a bellwether meter. Each of the bellwether meters monitors a power output of one of the solar power systems in one of the clusters. The computer system receives solar power generation data from the bellwether meters. The computer system generates a solar power generation forecast for each of the clusters of the solar power systems using the solar power generation data from the bellwether meters in respective ones of the clusters.

An object is a sunlight information provision system that allows a user to easily obtain more detailed sunlight information. A storage unit that stores date-and-time information, location information, and sunlight intensity information that is information regarding sunlight intensity at date and time indicated by the date-and-time information and location indicated by the location information in association with each other; a date-and-time information acquisition unit that acquires the date-and-time information; a location information acquisition unit that acquires the location information; a direction information acquisition unit that acquires the direction information; a first calculation unit that calculates the sunlight intensity information associated with sunlight inquiry information including the date-and-time information acquired by the date-and-time information acquisition unit, the location information acquired by the location information acquisition unit, and the direction information acquired by the direction information acquisition unit; a second calculation unit that calculates direction-specific sunlight intensity information by using a result of calculation of the first calculation unit; and a presentation unit that presents the direction-specific sunlight intensity information calculated by the second calculation unit to a user.

An object is a sunlight information provision system that allows a user to easily obtain more detailed sunlight information. A storage unit that stores date-and-time information, location information, and sunlight intensity information that is information regarding sunlight intensity at date and time indicated by the date-and-time information and location indicated by the location information in association with each other; a date-and-time information acquisition unit that acquires the date-and-time information; a location information acquisition unit that acquires the location information; a direction information acquisition unit that acquires the direction information; a first calculation unit that calculates the sunlight intensity information associated with sunlight inquiry information including the date-and-time information acquired by the date-and-time information acquisition unit, the location information acquired by the location information acquisition unit, and the direction information acquired by the direction information acquisition unit; a second calculation unit that calculates direction-specific sunlight intensity information by using a result of calculation of the first calculation unit; and a presentation unit that presents the direction-specific sunlight intensity information calculated by the second calculation unit to a user.

The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.

The present invention is in the field of a geometrically and spectrally resolved albedometer for a PV-module, a method of determining characteristics of reflected light, a method of optimizing reflected light performance of a solar cell, and a computer program for geometrically and spectrally resolving light.