SolarEnergy contains a Python module to do simple modelling in the field of solar energy. The code is being developed by Marc van der Sluys of the department of Astrophysics at the Radboud University Nijmegen, the Netherlands and the department of Sustainable energy of the HAN University of Applied Sciences in Arnhem, the Netherlands. SolarEnergy can be used under the conditions of the GPLv3 licence. These pages contain the API documentation. For more information on the Python package, licence, source code and data files, see the SolarEnergy GitHub page.