Office of Energy Efficiency & Renewable Energy – Peak Sun Hours

The equivalent number of hours per day when solar irradiance averages 1,000 w/m2.  For example, six peak sun hours means that the energy received during total daylight hours equals the energy that would have been received had the irradiance for six hours been 1,000 w/m2.


Source: Energy.gov.
Image: Unsplash.

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