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U.S. Solar Variance Maps: June-August 2010

October 6, 2010

The maps illustrate how solar irradiance varied from its normal monthly averages across the U.S. from June through August, 2010. They dispel a popular perception that solar energy is relatively consistent from year to year and underscore the need for thorough resource assessments prior to investing in solar projects.

Click here to download the monthly maps for both Global Horizontal Irradiance (GHI) and Direct Normal Irradiance (DNI) and a more detailed summary of the study.

For more information, visit our press release here.