captest.calcparams.e_total

captest.calcparams.e_total(data, poa, rpoa, bifaciality=0.7, bifacial_frac=1, rear_shade=0, verbose=True)

Calculate total irradiance from POA and rear irradiance.

Parameters:

  • data (DataFrame) – DataFrame with the source data for calculations. Usually the data attribute of a CapData instance.

  • poa (str) – Column name for POA irradiance (W/m^2).

  • rpoa (str) – Column name for rear irradiance (W/m^2).

  • bifaciality (numeric, default 0.7) – Bifaciality factor.

  • bifacial_frac (numeric, default 1) – Fraction of total array nameplate power that is bifacial. Pass to calculate total plane of array irradiance for plants with a mix of monofacial and bifacial modules.

  • rear_shade (numeric, default 0) – Fraction of rear irradiance that is lost due to shading. Set to decimal fraction, e.g. 0.12, to include in calculation of e_total.

Returns:

Total plane of array irradiance.

Return type:

numeric or Series