pvlib.irradiance.aoi

pvlib.irradiance.aoi(surface_tilt, surface_azimuth, solar_zenith, solar_azimuth)

Calculates the angle of incidence of the solar vector on a surface. This is the angle between the solar vector and the surface normal.

Input all angles in degrees.

Parameters:

surface_tilt : numeric

Panel tilt from horizontal.

surface_azimuth : numeric

Panel azimuth from north.

solar_zenith : numeric

Solar zenith angle.

solar_azimuth : numeric

Solar azimuth angle.

Returns:

aoi : numeric

Angle of incidence in degrees.