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Solar Cells and PV Systems (CAS)

This Certificate provides a comprehensive understanding of the fundamental physical processes of solar cells, as well as the design and function of photovoltaic systems. The CAS Solar Cells and PV Systems consists of two separate courses running in parallel:

  • Physics of Solar Cells (6 ECTS)
  • Photovoltaic Systems – from Rooftop to Large Scale (6 ECTS)
  • You understand the fundamental operating principles of photovoltaic devices
  • You can interpret electrical modeling of PV Cells
  • You can classify and explain different PV inverters and PV mounting systems
  • You can size and simulate an on-grid PV system using a software tool

Termine / Veranstaltungsort / Kosten

TerminVeranstaltungsort Kosten
14.10.2024 - 31.03.2025
Artikel-Nr.: UFR-SEE-CAS-SCPVS-202410
Online 3.000,00 

Veranstalter und Veranstaltungsort


University of Freiburg
Department of Sustainable Systems Engineering - INATECH



Zielgruppe und Voraussetzungen


Working professionals with:
  • Existing knowledge of the energy sector
  • Professional experience in the photovoltaic industry


  • Eagerness to study with some of the most experienced solar energy instructors and leaders of the world.
  • Academic level English proficiency.
  • Bachelor’s degree (or similar) or professional diploma in relevant fields


  • Application form (must be filled out on a computer and signed with applicant's original signature.)
  • Short curriculum vitae with a presentation of professional career in English
  • Diplomas and degrees (in English or German - translated by a sworn translator) – if available

Inhalte und Lernziele


This Certificate provides a comprehensive understanding of the fundamental physical processes of solar cells, as well as the design and function of photovoltaic systems. The course covers the following topics:
  • Conversion Efficiency and Solar Spectrum
  • Limitations of Solar Cell Performance: Spectral and Current Losses, Voltage Limitation, Fill Factor Losses
  • Fossil Fuels and Solar Irradiance
  • Electrical Modelling of PV Cells and PV Systems
  • Basics of On-Grid PV Systems: An Introduction to PVsyst® Software Tool
  • Solar Concentration and Tracking
  • Quality, Optimisation, and Performance Control
  • Basics of Off-Grid and Min-Grid PV Systems
  • Components of Off-Grid PV Systems


  • E-learning via online video lectures accompanied by readings, exercises, and online meetings with tutors and lecturers. Important questions regarding content or organization are asked and answered in the course forum.
  • Written exam with online supervision, written critical essay, preparation of project work and submission of written assignment.


After successful completion of CAS students should be able to: •    
  • Understand the fundamental physical processes of photovoltaic energy conversion.
  • Describe the fundamental operating principles of photovoltaic devices.
  • Interpret electrical modeling of PV Cells: Ideal PV Cell, 1-diode model, 2-diode model and consequences of irradiance and temperature fluctuation on a PV cell.
  • Classify and explain different PV inverters and PV mounting systems.
  • Size and simulate an on-grid PV system using a software tool.
  • Understand solar concentration and tracking.

Format, Abschluss, Qualitätssicherung

Lehr- / Lernformat



360 hours (Lehrveranstaltungen + Selbststudium)

Creditpoints (ECTS)




Termine und Fristen


For the participants, the program is flexible in terms of time and location so that they can organize their studies individually. The fixed dates for online sessions are set by group poll (e.g., dfn-Terminplaner), taking into account the time zones of the participants.


Dr. Uli Würfel
Researcher at the Freiburg Universities Materials Research Center FMF and head of the department "Organic and Perovskite Photovoltaics" at Fraunhofer ISE.                                                                                                                                                                    

Prof. Dr. Ricardo Rüther
Professor at the Universidade Federal de Santa Catarina in Florianopolis-Brazil, in the field of solar photovoltaics, solar irradiation resource assessment, electrochemical storage and electromobility

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Was sagen die anderen?

I do believe it is the responsibility of those like us who have access to this technology, access to research facilities and to scientific knowledge, to use all these resources in order to improve the quality life for all those around us. What we are doing, what we will do from now on, will definitely have a major impact in our planet and society.
José Kemerer
This program offers access to state-of-the-art technology at the Fraunhofer Institute, knowledge from top experts in the field, combined with a great supporting team! An experience you wouldn’t find somewhere else.
Hassan Merhi
Receiving a degree from an all-time leading country in Solar Energy Technology is a privilege - that anyone who knows the field- would be looking forward to. The expertise of our professors from Uni Freiburg and Fraunhofer is palpable and reassuring.
Gustavo Cedeño