OTSun is a python package that uses the Monte Carlo Forward Ray Tracing for the optical analysis of Solar Thermal Collectors and Solar Cells.

The package can be installed either from pypi: pip install otsun or downloaded installed with python setup.py install.

In order to use the package the libraries of FreeCAD (https://www.freecadweb.org/) must be available and included in your python path.

The documentation of the module is available at https://otsun.readthedocs.io/

If you need to cite OTSun, please use the following reference:

• Cardona G, Pujol-Nadal R (2020) OTSun, a python package for the optical analysis of solar-thermal collectors and photovoltaic cells with arbitrary geometry. PLoS ONE 15(10): e0240735. https://doi.org/10.1371/journal.pone.0240735