Glossary

Glossary

The glossary defines the core solar angle terms used across the calculators and article pages.

Updated Solar Panel Angle Calculator
Glossary

Core terms

These terms appear throughout the site and should stay consistent across calculators and guides.

  • Tilt: panel angle from horizontal
  • Azimuth: compass direction of the panel face
  • Solar elevation: sun height above the horizon
  • Solar zenith: angle from vertical to the sun
  • Incidence angle: angle between sun ray and panel normal
  • Plane-of-array irradiance: sunlight received by the panel plane

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