For generating the documents locally use commands below from the root folder.
# install dependencies
pip install Sphinx sphinxcontrib-fulltoc sphinx_bootstrap_theme
# generate rst files for modules
sphinx-apidoc -f -e -d 4 -o ./docs ./honeybee_energy_ph
sphinx-apidoc -f -e -d 4 -o ./docs ./honeybee_ph
sphinx-apidoc -f -e -d 4 -o ./docs ./honeybee_ph_standards
sphinx-apidoc -f -e -d 4 -o ./docs ./honeybee_ph_utils
# build the documentation under _build/docs folder
sphinx-build -b html ./docs ./docs/_build/docs