Solar fundamentals
Industry Term

Peak Sun Hours

Peak sun hours estimate the equivalent number of hours per day when solar irradiance averages 1000 W/m².
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What does Peak Sun Hours mean?

Peak sun hours estimate the equivalent number of hours per day when solar irradiance averages 1000 W/m².

How are peak sun hours used in solar design?

Installers use peak sun hours to estimate energy production from a PV system. It compresses a messy day of clouds, angles, and changing sunlight into a cleaner number. Nature, of course, does not read the spreadsheet.

How it relates to Tigo

Peak sun hours influence production expectations, clipping estimates, and energy modeling for systems using Tigo equipment.

Related glossary terms

  • Irradiance
  • Module Wattage
  • Energy Production
  • Clipping