pvlib has a new major release, v0.7.0 Release Notes: https://pvlib-python.readthedocs.io/en/v0.7.0/whatsnew.html PyPI: https://pypi.org/project/pvlib/ Read the Docs: https://pvlib-python.readthedocs.io/en/latest/ GitHub: https://github.com/pvlib/pvlib-python Here's a quick summary: - dropped support for Python-2.7 - new `ivtools` module for fitting solar panel parameters - new implementation of the cloud wavelet variability model (WVM) - new functions for temperature and incidence angle modifier (IAM) models - updated solar panel and inverter parameters databases from National Renewable Energy Lab (NREL) Also note this is a major release so there are a few breaking API changes. Users should probably read the release notes and check their code before updating: https://pvlib-python.readthedocs.io/en/v0.7.0/whatsnew.html#api-breaking-cha... -- Mark Mikofski, PhD (2005) *Fiat Lux*