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P. C.
, …
cwh...@sandia.gov
10
Oct 6
Help with Tracking Misalignment for One Axis
Additional approach of Implementing Tracking Errors in Single-Axis Solar Tracking Systems, The
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Help with Tracking Misalignment for One Axis
Additional approach of Implementing Tracking Errors in Single-Axis Solar Tracking Systems, The
Oct 6
Fabio Iozzino
,
Will Hobbs
2
Oct 2
Beginner's Query: Modeling Mutual Shading and Ground Radiation in pvlib-python
For row-to-row shading, here are a few resources: https://pvlib-python.readthedocs.io/en/stable/
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Beginner's Query: Modeling Mutual Shading and Ground Radiation in pvlib-python
For row-to-row shading, here are a few resources: https://pvlib-python.readthedocs.io/en/stable/
Oct 2
Mark Mikofski
, …
Anton Frisk
3
Oct 1
Welcome — PV textbook
Hi! New here. Excellent book and problems page. Saw a bunch of problems about solar in space, eg.
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Welcome — PV textbook
Hi! New here. Excellent book and problems page. Saw a bunch of problems about solar in space, eg.
Oct 1
kevina...@gmail.com
Sep 24
[ANN] pvlib v0.13.1
Dear pvlib community, The maintainers are pleased to announce the v0.13.1 release of pvlib python.
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[ANN] pvlib v0.13.1
Dear pvlib community, The maintainers are pleased to announce the v0.13.1 release of pvlib python.
Sep 24
Dharik Mallapragada
, …
Will Hobbs
8
Aug 22
Modeling PV system - defining system size and DC output NaN values
Angelos, These are all valid reasons to keep NaNs. I think that solar position data could also be
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Modeling PV system - defining system size and DC output NaN values
Angelos, These are all valid reasons to keep NaNs. I think that solar position data could also be
Aug 22
Will Hobbs
,
Anton Driesse
2
Aug 20
1984 JPL/NASA/DOE report, Summary of Photovoltaic System Performance Models
Thanks, Will. There are many interesting old JPL and other reports from that era. The "models
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1984 JPL/NASA/DOE report, Summary of Photovoltaic System Performance Models
Thanks, Will. There are many interesting old JPL and other reports from that era. The "models
Aug 20
Will Hobbs
, …
Anton Driesse
12
Aug 13
Simple models for nonlinear relationship between irradiance and DC power
Hi Will, Since you mention the ADR model: it has a temperature coefficient that doesn't have the
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Simple models for nonlinear relationship between irradiance and DC power
Hi Will, Since you mention the ADR model: it has a temperature coefficient that doesn't have the
Aug 13
roshni agrawal
, …
Echedey Luis Álvarez
5
Jul 29
Perez model in Infinite Sheds
Hey Roshni! It's good to hear you want to get involved :) I suggest you start by checking our
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Perez model in Infinite Sheds
Hey Roshni! It's good to hear you want to get involved :) I suggest you start by checking our
Jul 29
Loc Nguyen
, …
Will Hobbs
3
Jul 29
Single-axis tracker modeling: True tracking outperforming backtracking despite shading - Expected behavior?
You will need to account for the non-linear losses from partial shade in crystalline silicon modules.
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Single-axis tracker modeling: True tracking outperforming backtracking despite shading - Expected behavior?
You will need to account for the non-linear losses from partial shade in crystalline silicon modules.
Jul 29
Mukiibi Rogers
,
cwh...@sandia.gov
2
Jul 17
Inquiry About pvlib Group Meetings for Merges and Pull Request Follow-Ups
Hello Mukiibi, The pvlib doesn't currently hold meetings. We prefer that discussions about
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Inquiry About pvlib Group Meetings for Merges and Pull Request Follow-Ups
Hello Mukiibi, The pvlib doesn't currently hold meetings. We prefer that discussions about
Jul 17
Raghav Prabanth
,
cwh...@sandia.gov
2
Jul 15
Doubt Clarification
Hi Raghav, There is a function pvlib.iotools.read_panond that will read either a PAN or OND file and
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Doubt Clarification
Hi Raghav, There is a function pvlib.iotools.read_panond that will read either a PAN or OND file and
Jul 15
Gemini
,
Adam R. Jensen
2
Jul 4
Soda-Pro is not reachable
1. Specifying time_ref='UT' will give you UTC 2. The get_cams function retrieves the data
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Soda-Pro is not reachable
1. Specifying time_ref='UT' will give you UTC 2. The get_cams function retrieves the data
Jul 4
roshni agrawal
, …
N Dabouz
7
Jul 1
Using CECMod
Thanks Cliff. I was using v0.11 and it explains the issue well. v0.13 uses 'no_loss' spectral
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Using CECMod
Thanks Cliff. I was using v0.11 and it explains the issue well. v0.13 uses 'no_loss' spectral
Jul 1
Mark Mikofski
Jun 27
Fwd: [psf-members-ann] 2025 PSF Board Election Schedule & Info
FYI: Python software foundation (psf) 2025 board member election info… From: Marie Nordin <marie@
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Fwd: [psf-members-ann] 2025 PSF Board Election Schedule & Info
FYI: Python software foundation (psf) 2025 board member election info… From: Marie Nordin <marie@
Jun 27
Ludivine Chabaud
,
cwh...@sandia.gov
2
Jun 24
Assistance with DMEG Module Parameters and .PAN File in PVLIB
Hi Ludivine, 1. The pvlib function reads the file into the python workspace but doesn't interpret
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Assistance with DMEG Module Parameters and .PAN File in PVLIB
Hi Ludivine, 1. The pvlib function reads the file into the python workspace but doesn't interpret
Jun 24
Mark Mikofski
Jun 20
interactive graph of Python packages
An interactive graph of Python packages https://fi-le.net/pypi/
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interactive graph of Python packages
An interactive graph of Python packages https://fi-le.net/pypi/
Jun 20
Helix
,
cwh...@sandia.gov
2
Jun 20
Capacity Factor
The introduction tutorial shows how to model power from a PV system. https://pvlib-python.readthedocs
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Capacity Factor
The introduction tutorial shows how to model power from a PV system. https://pvlib-python.readthedocs
Jun 20
Ben Farmer
, …
kevina...@gmail.com
5
Jun 20
Help explaining bifacial panel irradiance result with backtracking
Hi Kevin, Ah ok cool, thanks for that explanation. Good to know it all makes sense! Regards, Ben On
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Help explaining bifacial panel irradiance result with backtracking
Hi Kevin, Ah ok cool, thanks for that explanation. Good to know it all makes sense! Regards, Ben On
Jun 20
kevina...@gmail.com
Jun 7
[ANN] pvlib v0.13.0
Dear pvlib community, The maintainers are pleased to announce the v0.13.0 release of pvlib python.
unread,
[ANN] pvlib v0.13.0
Dear pvlib community, The maintainers are pleased to announce the v0.13.0 release of pvlib python.
Jun 7
Kris
,
cwh...@sandia.gov
6
May 28
Weather Adjusted Expected Generation
I think all bets on accuracy/precision are off when solar position is not computed for the actual
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Weather Adjusted Expected Generation
I think all bets on accuracy/precision are off when solar position is not computed for the actual
May 28
Aqeel Rehman
May 22
PVsyst Shading scenes
Hey, can anyone help me with pvsyst shading scene... I need some guidance.
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PVsyst Shading scenes
Hey, can anyone help me with pvsyst shading scene... I need some guidance.
May 22
Rafael Campos
,
cwh...@sandia.gov
2
May 18
Help interpreting rear irradiance profiles from bifacial_radiance simulations
Hi Rafael, Most of the irradiance reaching the rear surfaces is from ground reflections. In the
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Help interpreting rear irradiance profiles from bifacial_radiance simulations
Hi Rafael, Most of the irradiance reaching the rear surfaces is from ground reflections. In the
May 18
Jose Domingo Santos Rodriguez
, …
Mark Campanelli
5
May 17
Dark I-V curve fitting in Python
Hi Jose, PVfit is currently not set up to fit single dark IVs. I will have to add this to the TODO
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Dark I-V curve fitting in Python
Hi Jose, PVfit is currently not set up to fit single dark IVs. I will have to add this to the TODO
May 17
riccardo adinolfi
,
cwh...@sandia.gov
2
May 17
Comparing the power shape - measured vs modeled
Can you elaborate on what you mean by not "very robust"? It may help to think of a PV model
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Comparing the power shape - measured vs modeled
Can you elaborate on what you mean by not "very robust"? It may help to think of a PV model
May 17
Kanyanta Makasa
, …
cwh...@sandia.gov
4
May 16
GSoC
> I could still become an active contributor even without the competition, right? Yes, certainly.
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GSoC
> I could still become an active contributor even without the competition, right? Yes, certainly.
May 16
Ronald Reagon R
May 13
Query on Standard PV Module QC Test Sequence
Hi In the standard quality control process of PV module manufacturing, which test is typically
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Query on Standard PV Module QC Test Sequence
Hi In the standard quality control process of PV module manufacturing, which test is typically
May 13
roshni agrawal
,
kevina...@gmail.com
3
May 13
Bifacial Model in PVlib vs PVsyst
Thank you Kevin for the detailed explanation — that makes a lot of sense. It's helpful to know
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Bifacial Model in PVlib vs PVsyst
Thank you Kevin for the detailed explanation — that makes a lot of sense. It's helpful to know
May 13
Will Hobbs
Apr 24
Notes on NREL NSRDB PSM4
If you had not seen it, there are several variations of the NREL NSRDB PSM v4 now available: https://
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Notes on NREL NSRDB PSM4
If you had not seen it, there are several variations of the NREL NSRDB PSM v4 now available: https://
Apr 24
Mounir Abraim
,
cwh...@sandia.gov
3
Apr 24
Fixed and single-axis tracking POA PVSyst transposition model
Hi Cliff, Thanks a lot for your quick feedback. That is exactly what I was looking for :) Regards
unread,
Fixed and single-axis tracking POA PVSyst transposition model
Hi Cliff, Thanks a lot for your quick feedback. That is exactly what I was looking for :) Regards
Apr 24
Stein, Josh
, …
Anton Driesse
5
Apr 23
Question about PV company codes
Maybe if you ask them nicely they will give you the just company list with their codes? Anton On 2025
unread,
Question about PV company codes
Maybe if you ask them nicely they will give you the just company list with their codes? Anton On 2025
Apr 23