General
PVCDROM:	Electronic book on photovoltaics (Solar Power Labs at Arizona State University)
TUDELFT:	Open course on solar energy (photvoltaics) (Technical University Delft)
MIT:	Fundamentals of Photovoltaics (open course MIT 2013)
PV-Handbook:	Handbook of Photovoltaic Science and Engineering (Antonio Luque, Steven Hegedus)
CIGS-PV.NET:	CIGS Thin-Film Photovoltaics (https://cigs-pv.net)
Current status
General:	Photovoltaics Report (Fraunhofer ISE)
Efficiencies:	Best Research-Cell Efficiency Chart (National Renewable Energy Laboratory)
Global market:	Snapshot Report (IEA Photovoltaic Power Systems TCP)
ETIP-PV:	Fact sheets about Photovoltaics (European Technology and Innovation Platform PhotoVoltaics ETIP-PV)
BIPV:	BIPV Status Report 2020 (SUPSI, Becquerel Institute)
Life cycle assessment:	Factsheet: Life cycle assessment – Electricity from photovoltaic systems (Treeze 2020)
IRENA:	Studies on Photovoltaics (International Renewable Energy Agency IRENA)
Roadmaps
ITRPV:	International Technology Roadmap for Photovoltaic (continuously updated)
IEA:	Technology Roadmap – Solar Photovoltaic Energy (2014)