Welcome!

Solar Data Warehouse

is a service providing historical and near-real time solar radiation data from thousands of U.S. ground stations. Our hourly and daily datasets are the most accurate available for the continental United States at the current time.  Satellite and modeled data perform well on monthly averages, but if you need daily or hourly data we're the best.

Solar Data

Daily and Hourly

data is measured from approximately 5000 U.S. stations and has around half the error of satellite and modeled data. Data includes basic weather parameters and multiple layers of quality control.  We also have sub-hourly data from about 1000 sites.

Solar Forecasting

Proprietary Models

predict solar radiation for a specific area based on discovered climate patterns, NOAA weather forecasts, live hourly data, and other factors. The models adapt and learn in near real time. Our unique advantage is a high-quality hourly radiation dataset covering the U.S.

Monthly Atlas

Contour Images

showing daily averages of global radiation for the U.S. are displayed in a free slideshow. Check it out! There is a high-quality version of our atlas available in Photon Magazine.