Turmstraße 5
D-35578 Wetzlar

Tel.: +49 6441 982 880
Fax: 206-708-8426
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Company Description

Using innovative methods built upon proven science, 3TIER is a world leader in solar resource assessment. From early-stage prospecting to in-depth site analysis, we provide the critical resource information you need to make informed decisions regarding your solar project. 3TIER has produced the first solar irradiance map of the entire Western Hemisphere, with the rest of world coming soon. You can explore this map online for FREE at Once you’ve identified promising locations, 3TIER can provide an accurate and in-depth solar resource assessment, including the intensity and variability of the solar resources at the site. The FullView Site Analysis Report includes average monthly solar irradiance and diurnal variability for GHI, DNI, and DI values, with annual and monthly histograms and color-coded tables of the hourly distribution of these values for easy interpretation. A data file provides the complete hourly time series of GHI, DNI, and DI values from 1997-2007.

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