After studying and earning a doctorate in landscape planning and geoinformatics, Dr. Guido Terwey worked as a team leader at Juwi Solar GmbH. He was then responsible for wind energy projects and the development of the photovoltaic open-space business area at Prowind.

Dr. Guido Terwey is responsible for solar-konzept in the central region of Germany. 

After studying geography and history, Stephan Schmitt headed an office for local management and regional economic development for several years. Later, as a project manager, he realized numerous commercial film productions for national companies.

Stephan Schmitt is responsible for the northern region at solar-konzept.

After completing his vocational training as an electrician and further training to become a state-certified technician, Sascha Kopietz worked as a specialist planner and construction manager for the implementation of ground-mounted PV systems in Germany and the Netherlands.

Sascha Copytz is responsible for the technical planning and implementation of projects at solar-konzept.

After studying geo-ecology, geodata has accompanied her to this day. First in the areas of flood risk management and hydropower potential in Baden-Württemberg and then in the course of environmental monitoring at Frankfurt Airport.

Susanne Kleinert is technically responsible for geodata analysis and site assessment at solar-konzept.

Till Virkus has a master’s degree in business administration. As a working student, he gained practical sales experience at Bentley and Bugatti, as well as expertise in financial accounting for operating companies for ground-mounted PV systems with the tax consultant Hahn & Partner.

Till Virkus is responsible for project financing and controlling at solar-konzept.

After her training and many years of professional experience in notarial contracts, Anja Krahmer switched to the solar industry in 2010. There she worked in the area of ​​project development, among other things. She worked as a manager at BELECTRIC GmbH and Unigea Solar Projects GmbH.

With her extensive expertise in real estate law, Anja Krahmer is responsible for route security and network planning in our solar concept team.

Matz Sell studied social sciences and has a master’s degree in applied sustainability. He has been committed to sustainable development for many years and gained experience in press and public relations in finance, at an organic farming association, and in public service.

He is the first point of contact for all interested parties and is responsible for the basic area analysis.

Birgit Eggl has been working in the solar industry for over 15 years. Among other things, she was responsible for project development in Europe for a large solar company until 2016.

As part of the solar-konzept group, she is responsible for the Dutch project business. Since January 2017, she has been co-owner and managing director of TPSolar Nederland B.V.

Martin Voigt has been working in the energy industry since 2004, focusing on large international projects.

He has been co-owner and managing director of our Dutch partner TPSolar Nederland B.V. since 2017 and is responsible for the project financing of solar systems in the Netherlands.

As part of his previous activities in various national and international companies, Stefan Singer has been able to gain valuable experience in the area of ​​operational organization and management. He has been in the solar industry for over 10 years.

At solar-konzept, Stefan Singer takes care of accounting and various commercial tasks, among other things.