SolarWX service provides forecasts of Global Horizontal Irradiance (GHI) and
    estimated power output SolarWX service provides forecasts of Global Horizontal Irradiance (GHI) and
    estimated power output

SolarWX

SolarWX® GHI and Estimated Power Output Forecast Service

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.

User Interface for SolarWX Services


The forecasted power (orange line) and the actual power (green line) are displayed for the past 72 hours. Prior forecasts can be displayed with observed data allowing users to validate forecasts.

SolarWX | Our web-based
        display used by Solar Energy Systems

*ForecastWatch® is an independent provider of forecast accuracy and skill information. Read the report at http://forecastwatch.com/static/Three_Region_High_Temperature_Study_2014.pdf.

SolarWX combines two critical modeling steps.

  1. The first is GWC’s best-in-the-world atmospheric forecast, 1 used in this case to generate GHI information.
  2. The second is our power conversion model that converts GHI to forecasted output power. Some customers need only GHI; others need the conversion to power as well.

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 Forecast Validation


GHI forecast average error statistics (in W/m2) average over three months, with light blue line showing GWC reduction in forecast error.

SolarWX | Our web-based
        display used by Solar Energy Systems

Specifications


SolarWX is generated at hourly and 15-minute intervals, with forecasts available to 168 hours. Observations of GHI and power 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.

Data for SolarWX Services


Variables Available

  • Output Power at Farm
  • Average GHI at Site
  • Power as % of Capacity
  • Available Power at Farm

Delivery Method

  • Standard web services as bulk CSV files

To learn more about SolarWX, download our PDF.

SOLARWX SERVICE PDF
GWC | RoadWX POST-PROCESSING TECHNOLOGY