• Employer's Liability Insurance Association for Electrical Engineering
  Seminar and workshop

• Operating company in Hessia
  Collaboration as examination expert Bachelor's programme

• Operating company in Hessia
  Insured event, snow load damage,
  Free field photovoltaic system 2560 kWp
  
  
• Operating company in Schleswig-Holstein
  Court, arbitration proceedings, roof-parallel 76.6 kWp
  
  
• Private household Bavaria 
  Insured event, lightning damage, parallel to roof 8.6 kWp

• Professional association for electrical engineering
  Seminar and workshop

• 2021 | Operating company in Hessia
  Partial relocation and conversion due to building extension, parallel to roof 69.3 kWp

• 2021 | Operating company in Hessia
  Refurbishment, product failure, Free field photovoltaic system 400 kWp

• 2021 | Operating company in Hessen
  Refurbishment, product defect, roof-parallel 43.6 kWp

• 2020 | Operating company in Hessia
  Complete refurbishment, planning and installation error, Free field photovoltaic system, from 1-axis tracking to fixed east-west 552 kWp
  
  
• 2020 | Operating company in Hessia
  Refurbishment, installation error, footbridge over railway track, parallel to roof 22.4 kWp
  
  
• 2019 | Operating company in Hessia
  Complete conversion due to refurbishment of rented residential building, parallel to roof 22.3 kWp

• Vocational training institution Technical University Cape Town, South Africa
  Consulting service for the educational institution in Cape Town
  
  
• Swiss University
  Collaboration as examination expert Bachelor's programme

• Operating company in Hessia
  Determination of technical condition, roof-parallel 66 and 99 kWp
  
  
• Operating company in Hessia
  Insured event, fire damage, parallel to roof 144.6 kWp
  
  
• Operating company in Bavaria
  Insured event, lightning damage, Free field photovoltaic system 3790 kWp

• Solar company Schleswig-Holstein
  Employee training, seminar and workshop
  
  
• Professional association for electrical engineering
  Seminar and workshop

• Employer's liability insurance association for electrical equipment
  Lecturer on the subject of electrical hazards during the construction and operation of photovoltaic systems (theory & practical exercises)

• Swiss University
  Collaboration as examination expert Bachelor's programme (January 2019)

• Swiss University
  Collaboration as examination expert Bachelor's programme (January and July 2018)
  
  
• Vocational training institution Technical University Cape Town, South Africa
  Training of PV installers and consulting for the educational institution in Cape Town
  
  
• Operating company in Schleswig-Holstein
  Advising the operator during a site visit with a court expert, roof-parallel 77 kWp
  
  
• Operating company in Hessen
  Professional integration of the PV system into the external lightning protection, roof-parallel 28 kWp

• Operating company in Hessen
  Insured event, monitoring the rectification of defects, Free field photovoltaic system 3122 kWp
  
  
• Operating company in Bavaria
  Insured event, monitoring the rectification of defects, Free field photovoltaic system 3797 kWp
  
  
• Private household in Hessen
  Insured event, determination of the cause of damage, roof-parallel 68 kWp
  
  
• Private household in Hessen
  Product defect PV module, electroluminescence measurement, roof-parallel 11,2 kWp
  
  
• Private household in Hessen
  Product fault PV module, characteristic curve/power measurement PSTC, roof-parallel 8,9 kWp
  
  
• Private household in Hessen
  Product fault PV module, characteristic curve/power measurement PSTC, roof-parallel 6 kWp

• Private household in Hessen
  Preliminary planning of three tenant electricity PV systems with a total output of 80 kWp
  
  
• Swiss University
  Collaboration as examination expert Bachelor's programme
  
  
• German Railway Company
  Sample preparation of commissioning and repeat measurement documents for PVsystems, Theory seminar and application exercise workshop of the documents prepared

» Opions via photovoltaic systems, 2017

• Operating company in Schleswig-Holstein
  Monitoring of remedial measures, roof-parallel 77 kWp (May and September)
  
  
• Food market in Niedersachsen
  Acceptance after construction, roof-parallel, 91 kWp

• Private household in Hessen
  Product fault PV module, electroluminescence measurement, roof-parallel 10.2 kWp

• Private household in Hessen
  Product fault PV module, characteristic curve/power measurement PSTC, roof-parallel 9 kWp

• Private household in Hessen
  Product fault PV module, characteristic curve/power measurement PSTC, roof-parallel 5.9 kWp

• Annual Conference "Electrical Safety" in Kassel
  Lecture on the topic of erection of PV systems according to DIN VDE 0100-712:2016-10, approx. 200 participants
  
  
• Symposium "New electrical installation regulations" in Dortmund
  Lecture on the subject of generation systems on the low-voltage grid according to E VDE-AR-N 4105, approx. 200 participants

• Appointment as ZVEH Delegate
  DKE AK 221.5.2 "PV systems" standards working group 2016 ff

• Appointment as ZVEH Delegate
  FNN Project Group "Generation Plants on the Low Voltage Grid 2016 ff

• Public utilities in Hessen
  Preliminary planning of various solar parks with 750 and 1000 kWp and a tenant electricity PV system with 60 kWp

• Swiss University
  Collaboration as examination expert Bachelor's and Master's degree course

• Operating company in Schleswig-Holstein
  Monitoring of the removal of defects, roof-parallel 77 kWp

• Operating company in Schleswig-Holstein
  Product and installation faults, roof-parallel 77 kWp

• Agricultural enterprise in Hessen
  Determination of the extent of damage after a major fire event, roof-parallel 44,4 kWp

• 2015 | Operating company in Hessen
  Professional revision of the DC wiring and the module substructure to comply with the requirements of DIN 1055, roof-parallel 97 kWp

• 2015 | Operating company in Hessen
  Professional revision and repair of 5 PV systems with module product defects, roof-parallel total 95 kWp

• 2014 | Operating company in Hessen
  Professional revision of the fastening of the module substructure to avoid further damage to the building, roof-parallel 43 kWp

• Swiss Solar Research Institute
  Consulting services for the purchase of stationary, high-precision PV measurement systems for the measurement of module power, electroluminescence, infrared and insulation resistance

• Private household in Niedersachesen
  Hail damage insured event, roof-parallel 25 kWp

• Operating company in Hessen
  Acceptance of construction work, open space 1-axis tracking 550 kWp

• County Marburg-Biedenkopf
  Installation and planning errors PV & lightning protection, roof-parallel, 180 kWp

• Food market in Hessen
  Acceptance after construction, parallel to the roof, 91.8 kWp

• PV system operator in Hessen
  Building inspection, roof-parallel, 7.5 kWp

• Operating company in Hessen
  Product fault, open area 1-axis tracking 570 kWp

• Marburg Regional Court
  Legal dispute work wage claim, 11.6 kWp

• Operating company in Hessen
  Installation defects, roof-parallel 30.5 kWp

• Operating company in Hessen
  Installation defects, roof-parallel 19.6 kWp

• Operating company in Mecklenburg-Vorpommern
  Installation defects, roof-parallel/open space 471 kWp

• Operating company in Mecklenburg-Vorpommern
  Installation defects, roof-parallel 184 kWp

• Operating company in Mecklenburg-Vorpommern
  Installation defects, roof-parallel 234 kWp

• PV plant operator, Niedersachsen
  Product & installation defects, Free field photovoltaic system 1 MWp

• PV plant operator, Mecklenburg-Vorpommern
  Installation defects, roof-parallel 192 kWp

• Solar technology company in Nordrhein-Westfalen
  Installation defects, wage claim, roof-parallel 30 kWp

• Architect's office in Hessen
  Insured event small animal bite, roof-parallel 37 kWp

• Solar companies in Sachsen-Anhalt
  Product fault, roof-parallel 740 kWp

• Expert opinion for a private household in Rheinland-Pfalz
  Insured event Lightning damage, roof-parallel 8.5 kWp

• Operator community in France
  Hail damage insured event, roof-parallel 424 kWp

• Well-known solar module manufacturer
  Intensive technical support for a solar module manufacturer during a module recall campaign: e.g. development of processing procedures, training of craftsmen for error detection and safe handling (also in cooperation with TÜV Rheinland), technical hotline and on-site deployment.

• Distributor of photovoltaic systems
  Detailed Germany-wide investigation and evaluation of 26 Photovoltaic systems before the introduction of a module recall campaign by a well-known solar module manufacturer.