GESS IIa: Grid-connected and Off-grid Photovoltaics (PV)

  • Content
  • Target groups
  • Learning objectives
  • Contact

Our current decade showed an extraordinary downward price development for photovoltaic (PV) technology. As a result, newly installed peak power of PV systems now surpasses all other technologies, both conventional/fossil and renewable. Use this RENAC course to get yourself up to speed on what is currently the most promising energy technology on our planet. You will receive solid theoretical knowledge combined with practical hands-on exercise. Our experienced trainers will get you involved in the training and will facilitate valuable group interaction and discussions.


  • Introduction on PV applications/current global market trends and numbers
  • Grid-tied PV systems
  • Rural electrification with off-grid systems
  • PV-diesel hybrid systems
  • PV project development and (economic) feasibility
  • Hands-on work with solar equipment
  • Site visit to a large scale PV power plant


5 days (3.5 days theory, 1 practical, 0.5 field visits)

The training suits those who:

  • Are interested in PV and have no/little prior knowledge
  • Need a comprehensive overview on PV systems and applications
  • Start evaluating/developing their first projects such as contractors, project managers, engineers, electricians, quality inspectors, technical support crew and customer service professionals in the solar energy industry

Qualification Level

No pre-requisites


  • This seminar gives interested persons the knowledge, tools and confidence to make educated decisions on most relevant solar PV project types, i.e. grid-tied, hybrid and off-grid.
  • It also facilitates the exchange of potential/specific project ideas between all participants who bring in perspectives from around the globe.

After the seminar, you will be able to:

  • Describe all system components and energy flows
  • Identify reliable sources for solar irradiation data
  • Calculate the estimated yearly energy yield of a sample PV system
  • Discuss and calculate spatial setup of PV systems
  • Draw a block diagram of an off-grid system and list the most important specifications of the components
  • Assemble a fully functional off-grid system using real-world industry standard components
  • Identify PV-Diesel hybrid system categories
  • Analyse fuel and emissions savings potentials
  • Describe operating parameters of both diesel generator and PV system and predict their interaction.
  • Interpret the interconnections within the PV project development process.
  • Conduct a first draft of a feasibility study

Dr. Emilienne Tingwey
Training Quality Assurance
Tel: +49 (0) 30 526 895 882
Email: tingwey[at]

GESS IIa: Grid-connected and Off-grid Photovoltaics (PV)


  • Assessment of knowledge acquisition
  • Qualified trainer with wide experience in the industry
  • Up-to-date theoretical lectures, case study, discussion, partner work
  • State-of-the-art practical training (calculations, hands-on exercises)
  • Use of our self-build practical training rigs, representing each technology
  • Field trips with inspections of power plants, buildings etc.
  • Certificate of attendance
  • 10% discount for early bird registration

Available dates & times

Next Date Location Language Registration deadline Lecturers Available places Price € Early bird € Valid until  
20.08.18 - 24.08.18 Berlin EN 06.08.2018
4 1.500,00 1.500,00 expired


Bernd Wollwerth-Carl, RENAC
Current position:
Bernd Wollwerth-Carl has been working in different fields of renewable energies for almost 20 years and has been with Renewables Academy (RENAC) AG since March 2017. At RENAC he leads the Solar Energy department and in this role he gives lectures, runs seminars and workshops, and coordinates all solar energy projects.

Professional experience:
After finishing his studies, Bernd started working in different fields of bioenergy (process engineering of biodiesel plants, operation of biogas plants, R&D for biogas liquefaction, etc.). In 2003 he joined the German Energy Agency (dena) where he was responsible for the bioenergy sector within the “Export Initiative Renewable Energies”. Here he implemented several large projects including the first PV roof top project of dena’s “solar roof program” in Athens. Later he worked for an energy supply company where he designed, developed and implemented bioenergy heat supply projects all over Germany. Thereafter he worked for three years as manager of the bioenergy department and later as International Sector Manager “Energy Companies” for the consulting company Ecofys GmbH where he implemented several large bioenergy studies. In 2009 he founded the company KWA Eviva GmbH and worked there as CEO as well as project developer for large-scale PV power plants in Germany, in Turkey and further countries abroad. At KWA Eviva GmbH he realized several large-scale ground-mounted PV plants.

Bernd has a diploma in Environmental Engineering.
Dr. Emilienne Tingwey, RENAC
Current position:
Emilienne joined the Renewables Academy (RENAC) AG in Berlin in 2010 and is presently Project Director in Training Quality Assurance.

Professional experience:
In 2010 Emilienne Tingwey started off as a project assistant in the international know-how transfer project TREE (Transfer Renewable Energy & Efficiency). With the completion of this project, she manages various tailor-made courses offered by RENAC, assists in the practical exercises of solar trainings and also supports the RENAC team in the implementation of international know-how transfer project ReGrid. Since 2012, she oversees the organization of the international study program GPE Solar which is offered by TU Berlin in cooperation with RENAC.

Emilienne holds a PhD in Environmental Sciences and a Masters in Environmental and Resource Management from the Brandenburg Technical University (BTU) in Cottbus as of April 2009. Born in Cameroon, Dr. Emilienne Tingwey grew up and studied in Cameroon right up to her bachelor degree before moving to Germany. She speaks fluent English, French, Pidgin, Moghamo and German.
Frank Jackson, RENAC
Current position:
Currently Frank runs a range of courses for people who are getting involved in the renewable energy industry and more specialised courses for solar electricity.

Professional experience:
Frank Jackson is an expert solar photovoltaic trainer and has been involved in the solar energy industry since the early 1990s, running courses and seminars, designing and installing systems, and more recently active in publishing. He has worked in the UK, France, Germany, Spain, Kenya, Tanzania and Somalia. Besides training activities, he has also designed and installed numerous photovoltaic systems (both off-grid and grid-tied).

Frank Jackson studied 1992 Photovoltaics and Development at the University of East London, and Electrical Installation Competences at the City & Guilds London Institute, London & Wales.
Gerhard Rauch, RENAC
Current position:
Gerhard Rauch has been a member of the RENAC since October 2018. As a Project Manager in the Solar Department he is responsible for the realisation of capacity building solar photovoltaic projects around the world. He is currently involved in the “Trainings on Rooftop Photovoltaic Systems in India – TROPHI” which targets various stakeholders critical to the realisation of India’s National Solar Mission. He is also responsible for the RENAC Training Centre, where he, and other trainers, incorporate practical demonstrations and exercises into their seminars about renewable energies and energy efficiency.

Mr. Rauch holds a Masters in Aeronautics and Astronautics Engineering, has experience as a project engineer in industrial automation and as a secondary school science teacher in the United Kingdom.
Isabelle Gezer, RENAC
Current position:
Isabelle Gezer joined the Renewables Academy (RENAC) in October 2017. She works as Project Manager within the Solar Energy Department, develops training material and is also involved as lecturer in face-to-face seminars, workshops and online classrooms.

Professional experience:
Ms Gezer has worked for three years for one of Europe’s biggest Solar Asset Management providers. As a technical asset manager for a large Solar PV Portfolio in UK, her daily routine included overseeing the technical performance of the assets, reviewing acceptance test calculations and liaising with EPC Contractors, O&M Providers, grid operators as well as other third parties.

Isabelle Gezer holds a diploma in Environmental Engineering (Technical University of Berlin) and Masters in Solar PV Engineering (University of Jaen, Spain).
Lars Koerner, RENAC
Current position:
Lars Koerner joined Renewables Academy (RENAC) AG in May 2014 as Project Director. He coordinates and conducts training programs at Renewables Academy (RENAC) AG mainly in the field of solar energy systems. Off-grid systems and PV-Diesel-Hybrid mini-grids for rural electrification or industrial applications are his special interest.

Professional experience:
Before joining RENAC Lars gained seven years of experience as project engineer and senior product manager at SolarWorld AG where he also managed several rural electrification projects. His experience in the area of solar energy spans further through his work at the German Aerospace Center (DLR) in Almeria, Spain and Fraunhofer ISE in Freiburg, Germany. He is an expert in sizing and simulation of solar energy systems and the co-author on off-grid systems in Earthscan’s 3rd edition of “Planning and Installing Photovoltaic Systems”.

Lars holds an engineering diploma in Environmental Engineering / Renewable Energies and is also a state-licensed electrician.


"One of the best trainings that I have attended. The program, the instructors and the atmosphere were great. It was a great experience for me. Thank you."
Bassem Chalak, Lebanon, Grid-connected and Off-grid Photovoltaics, 2015

"The Grid Connected and Off-Grid Solar PV training has enhanced my technical knowledge of solar and tremendously increased my performance as a renewable energy consultant."
Segun Adaju, Nigeria, Grid-connected and Off-grid Photovoltaics, 2015