pvlib.pvsystem.sapm_spectral_loss¶

pvlib.pvsystem.sapm_spectral_loss(airmass_absolute, module)[source]¶

Calculates the SAPM spectral loss coefficient, F1.

Parameters:

airmass_absolute : numeric

Absolute airmass

module : dict-like

A dict, Series, or DataFrame defining the SAPM performance parameters. See the sapm() notes section for more details.

Returns:

F1 : numeric

The SAPM spectral loss coefficient.

Notes

nan airmass values will result in 0 output.