Global Weather Corporation’s SolarWX® service provides forecasts of Global Horizontal Irradiance (GHI) and estimated power output (when system characteristics are available), for any solar installation at any location in the world. SolarWX’s accurate estimates of GHI enable applications such as solar energy generation, home and industrial energy use, and agriculture. Typical users include utilities, energy traders, smart home applications, photovoltaic monitoring systems, and agricultural information services. Forecasts can be displayed in our simple, intuitive, web-based display, shown here. Alternatively, our forecast data feed can be integrated into any customer system.
SolarWX combines two critical modeling steps.
Accuracy of both the GHI and power conversion steps has been verified by comparison to observations. The line graph shows forecast error statistics for a 72-hour period, illustrating GWC’s reduction in forecast error (light blue line) as compared to U.S. and Canada weather service models.
SolarWX is generated at hourly intervals, with forecasts available to 168 hours. Observations of GHI and power, when available, are input to the system. These data are used to optimize the forecast generation and power conversion steps in the processing chain. Output is available through GWC’s web-based time-series graphical user interface and as a data feed for integration into automated processes. The table below summarizes the standard output variables when power output data are provided in addition to GHI.
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