About us
Some references
Status: April 2025
Technical inspections
The technical inspections were carried out on ground-mounted systems (750 kWp to 50 MWp) and roof-top systems (5 kWp to 13 MWp). These include
- Technical due diligence
- Construction progress checks and inspection of the construction work
- Evaluation of quality assurance measures
- Technical inspections after commissioning
- Inspections at the end of the warranty period
- Recurring inspections
- Characteristic curve and infrared measurements
The inspected PV systems are located in Germany, Denmark, France, Italy, the UK, the Netherlands, Kazakhstan and Hungary.
In total, systems with an installed capacity of 1.2 GWp were inspected.
Expert opinions
The assessed PV systems were planned or installed in Germany, Turkey, Egypt, the UK, Romania, Slovenia, Pakistan, Jordan, Chile, the Philippines, Belarus, Mongolia and Ukraine. Activities included
- Preparation of yield reports
- Defect assessments
- Preparation of irradiation data from various sources
- Simulation of the PV system with PVsyst
- Presentation of the forecast results in a report
- Evaluation of yield forecasts from other experts
- Glare assessment
The management
Dipl.-Ing. (FH) Marco Wilke
Managing Director / Expert for photovoltaics and storage
Marco Wilke is a physics engineer and has been working as an expert in the field of photovoltaics since 2011. After a period as an employee, he has been self-employed and a freelancer since 2015. He specialises in construction progress inspections and technical inspections of rooftop and ground-mounted systems as well as storage systems and yield assessments based on PVsyst. In addition to PV systems in Germany and Europe, he has also assessed systems in non-European countries.
Certificates
Dipl.-Ing. (FH) Robert Pfatischer
Managing Director / Expert for photovoltaics and storage
Electrical engineer Robert Pfatischer was already involved in the remote monitoring of selected systems in Germany’s “1000 roofs program” during the 1990s. He gained many years of experience as Head of Quality Services at meteocontrol GmbH, where he was co-founder, authorised signatory and managing director from 1998 to 2020. In this context, he was involved in many projects in Germany and various European markets. He has also been realising and operating his own PV systems for many years. He continues to focus on the quality assurance of projects in an increasingly challenging environment.
The team
Mathias Röper, M. Eng.
Co-Founder / Expert for photovoltaics
Mathias Röper studied Environmental Engineering (B. Sc.) and Renewable Energy Systems (M. Eng.). He has been working as an engineer and expert in the field of photovoltaics since 2017. His core areas of expertise include glare reports and preliminary planning (technical system layouts) for PV systems. He also prepares special reports such as detailed ground shading analyses.
Dr.-Ing. Stefan Bofinger
Co-Founder / Expert for photovoltaics
Stefan Bofinger has been working as an expert in the field of photovoltaics since 2002. As an independent consultant, he supports investors and banks with photovoltaic project developments. Stefan Bofinger studied electrical engineering and wrote his doctorate on the subject of “Energy supply grids with a high proportion of photovoltaic solar energy: location assessment, solar power forecasting, grid integration”.
Arthur Zlotver
Clerk
Felix Worm
Assistance and back office
Emilia Heinzel
Assistance for glare and drainage reports
Cedric Wilke
Assistance for yield reports
Adrian Pfatischer
Data preparation and preliminary planning
Martina Ott
Assistance in preparing test reports
Ani Ostatishvili
Marketing and design
Max Krug, state-certified electrical engineer in energy technology
Technical consultant for project developments
Max Krug has 25 years of experience in the PV sector. He has developed and planned a large number of ground-mounted systems and brought them to construction maturity. Max Krug has been responsible for the construction management of several mega-watt plants in Germany, Turkey, Jordan, Slovakia and Ukraine. He can utilise this experience from the very beginning in planning, material selection, construction, commissioning and maintenance. Max Krug also has extensive experience in optimising operations and yields.
Dipl.-Ing (FH) Christian Binder
Expert / Technical Programme Management for Energy Management Systems
Christian Binder has 24 years of expertise at a market-leading manufacturer in software engineering. He is the founder of SENERGY365.DE. He specialises in expert opinions, consulting, analysis and commissioning of energy management systems.