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https://github.com/NREL/PVDegradationTools

Set of tools to calculate degradation responses and degradation related parameters for PV.
https://github.com/NREL/PVDegradationTools

degradation duramat photovoltaic-systems pv-modules python reliability

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Set of tools to calculate degradation responses and degradation related parameters for PV.

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# PV Degradation Tools (pvdeg)

This repository contains functions for calculating degradation of photovoltaic modules. For example, functions to calculate front and rear relative Humidity, as well as Acceleration Factors. A degradation calculation function is also being developed, considering humidity and spectral irradiances models.

Tutorials
=========

### Jupyter Book

For in depth Tutorials you can run online, see our [jupyter-book](https://nrel.github.io/PVDegradationTools/intro.html) [![Jupyter Book Badge](https://jupyterbook.org/badge.svg)](https://nrel.github.io/PVDegradationTools/intro.html)

Clicking on the rocket-icon on the top allows you to launch the journals on [Google Colaboratory](https://colab.research.google.com/) for interactive mode.
Just uncomment the first line `pip install ...` to install the environment on each journal if you follow this mode.

### Binder

To run these tutorials in Binder, you can click here:
[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/NREL/PVDegradationTools/main)
It takes a minute to load the environment.

### Locally

You can also run the tutorial locally in a virtual environment, i.e., `venv` or
[miniconda](https://docs.conda.io/en/latest/miniconda.html).

1. Create and activate a new environment, e.g., on Mac/Linux terminal with `venv`:
```
python -m venv pvdeg
. pvdeg/bin/activate
```
or with `conda`:
```
conda create -n pvdeg
conda activate pvdeg
```

1. Install `pvdeg` into the new environment with `pip`:
```
python -m pip install pvdeg
```

1. Start a Jupyter session:

```
jupyter notebook
```

1. Use the file explorer in Jupyter lab to browse to `tutorials`
and start the first Tutorial.

Documentation
=============

Documentation is available in [ReadTheDocs](https://PVDegradationTools.readthedocs.io) where you can find more details on the API functions.

Installation
============

Relative Humidity and Acceleration Factors for Solar Modules releases may be installed using the ``pip`` and ``conda`` tools. Compatible with Python 3.5 and above.

Install with:

pip install pvdeg

For developer installation, clone the repository, navigate to the folder location and install as:

pip install -e .[all]

License
=======

[BSD 3-clause](https://github.com/NREL/PVDegradationTools/blob/main/LICENSE.md)

Contributing
=======

We welcome contributiosn to this software, but please read the copyright license agreement (cla-1.0.md), with instructions on signing it in sign-CLA.md. For questions, email us.

Getting support
===============

If you suspect that you may have discovered a bug or if you'd like to
change something about pvdeg, then please make an issue on our
[GitHub issues page](hhttps://github.com/NREL/PVDegradationTools/issues).

Citing
======

If you use this functions in a published work, please cite:

Holsapple, Derek, Ayala Pelaez, Silvana, Kempe, Michael. "PV Degradation Tools", NREL Github 2020, Software Record SWR-20-71.

And/or the specific release from Zenodo:

Martin Springer, Matthew Brown, Silvana Ovaitt, Tobin Ford, Joseph Karas, Mark Campanelli, Derek M Holsapple, Kevin Anderson, Michael Kempe. (2024). NREL/PVDegradationTools: 0.3.2 (0.3.2). Zenodo. https://doi.org/10.5281/zenodo.11123249