Add `poa_` prefix to returned names when `return_components=True` in transposition functions by kandersolar · Pull Request #2627 · pvlib/pvlib-python · GitHub
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Add poa_ prefix to returned names when return_components=True in transposition functions #2627

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Merged
kandersolar merged 5 commits into from
Jan 15, 2026
Merged

Add poa_ prefix to returned names when return_components=True in transposition functions #2627

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05c6ec0
add `poa_` prefix
kandersolar Dec 16, 2025
4cc1859
update infinite_sheds
kandersolar Dec 16, 2025
d287ce0
whatsnew
kandersolar Dec 16, 2025
0732fc5
lint
kandersolar Jan 13, 2026
b076a8c
Update docs/sphinx/source/whatsnew/v0.13.2.rst
kandersolar Jan 15, 2026
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5 changes: 4 additions & 1 deletion docs/sphinx/source/whatsnew/v0.13.2.rst
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5 changes: 3 additions & 2 deletions pvlib/bifacial/infinite_sheds.py
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Original file line number Diff line number Diff line change
Expand Up @@ -301,15 +301,16 @@ def get_irradiance_poa(surface_tilt, surface_azimuth, solar_zenith,
sky_diffuse_comps_horizontal = haydavies(0, 180, dhi, dni, dni_extra,
solar_zenith, solar_azimuth,
return_components=True)
circumsolar_horizontal = sky_diffuse_comps_horizontal['circumsolar']
circumsolar_horizontal = \
sky_diffuse_comps_horizontal['poa_circumsolar']

# Call haydavies a second time where circumsolar_normal is facing
# directly towards sun, and can be added to DNI
sky_diffuse_comps_normal = haydavies(solar_zenith, solar_azimuth, dhi,
dni, dni_extra, solar_zenith,
solar_azimuth,
return_components=True)
circumsolar_normal = sky_diffuse_comps_normal['circumsolar']
circumsolar_normal = sky_diffuse_comps_normal['poa_circumsolar']

dhi = dhi - circumsolar_horizontal
dni = dni + circumsolar_normal
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51 changes: 26 additions & 25 deletions pvlib/irradiance.py
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Original file line number Diff line number Diff line change
Expand Up @@ -793,10 +793,11 @@ def haydavies(surface_tilt, surface_azimuth, dhi, dni, dni_extra,

diffuse_components : OrderedDict (array input) or DataFrame (Series input)
Keys/columns are:
* sky_diffuse: Total sky diffuse
* isotropic
* circumsolar
* horizon (always zero, not accounted for by the Hay-Davies model)
* poa_sky_diffuse: Total sky diffuse
* poa_isotropic
* poa_circumsolar
* poa_horizon (always zero, not accounted for by the
Hay-Davies model)

Notes
------
Expand Down Expand Up @@ -855,13 +856,13 @@ def haydavies(surface_tilt, surface_azimuth, dhi, dni, dni_extra,

if return_components:
diffuse_components = OrderedDict()
diffuse_components['sky_diffuse'] = sky_diffuse
diffuse_components['poa_sky_diffuse'] = sky_diffuse

# Calculate the individual components
diffuse_components['isotropic'] = poa_isotropic
diffuse_components['circumsolar'] = poa_circumsolar
diffuse_components['horizon'] = np.where(
np.isnan(diffuse_components['isotropic']), np.nan, 0.)
diffuse_components['poa_isotropic'] = poa_isotropic
diffuse_components['poa_circumsolar'] = poa_circumsolar
diffuse_components['poa_horizon'] = np.where(
np.isnan(diffuse_components['poa_isotropic']), np.nan, 0.)

if isinstance(sky_diffuse, pd.Series):
diffuse_components = pd.DataFrame(diffuse_components)
Expand Down Expand Up @@ -1111,10 +1112,10 @@ def perez(surface_tilt, surface_azimuth, dhi, dni, dni_extra,

diffuse_components : OrderedDict (array input) or DataFrame (Series input)
Keys/columns are:
* sky_diffuse: Total sky diffuse
* isotropic
* circumsolar
* horizon
* poa_sky_diffuse: Total sky diffuse
* poa_isotropic
* poa_circumsolar
* poa_horizon


References
Expand Down Expand Up @@ -1197,12 +1198,12 @@ def perez(surface_tilt, surface_azimuth, dhi, dni, dni_extra,

if return_components:
diffuse_components = OrderedDict()
diffuse_components['sky_diffuse'] = sky_diffuse
diffuse_components['poa_sky_diffuse'] = sky_diffuse

# Calculate the different components
diffuse_components['isotropic'] = dhi * term1
diffuse_components['circumsolar'] = dhi * term2
diffuse_components['horizon'] = dhi * term3
diffuse_components['poa_isotropic'] = dhi * term1
diffuse_components['poa_circumsolar'] = dhi * term2
diffuse_components['poa_horizon'] = dhi * term3

# Set values of components to 0 when sky_diffuse is 0
mask = sky_diffuse == 0
Expand Down Expand Up @@ -1353,10 +1354,10 @@ def perez_driesse(surface_tilt, surface_azimuth, dhi, dni, dni_extra,

diffuse_components : OrderedDict (array input) or DataFrame (Series input)
Keys/columns are:
* sky_diffuse: Total sky diffuse
* isotropic
* circumsolar
* horizon
* poa_sky_diffuse: Total sky diffuse
* poa_isotropic
* poa_circumsolar
* poa_horizon

Notes
-----
Expand Down Expand Up @@ -1417,12 +1418,12 @@ def perez_driesse(surface_tilt, surface_azimuth, dhi, dni, dni_extra,

if return_components:
diffuse_components = OrderedDict()
diffuse_components['sky_diffuse'] = sky_diffuse
diffuse_components['poa_sky_diffuse'] = sky_diffuse

# Calculate the different components
diffuse_components['isotropic'] = dhi * term1
diffuse_components['circumsolar'] = dhi * term2
diffuse_components['horizon'] = dhi * term3
diffuse_components['poa_isotropic'] = dhi * term1
diffuse_components['poa_circumsolar'] = dhi * term2
diffuse_components['poa_horizon'] = dhi * term3

if isinstance(sky_diffuse, pd.Series):
diffuse_components = pd.DataFrame(diffuse_components)
Expand Down
40 changes: 19 additions & 21 deletions tests/test_irradiance.py
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