Welcome to Sonnwinn
We are a consultant and expert office for photovoltaic systems based in Germany.
Inspections
- Due diligence
- Construction progress control
- Comissioning test
- End of warranty check
- Infrared images
- Technical asset management (TAM)
Expert's reports
- Yield assessment
- Simulation
- Damage report
- Defect assessment
- Evaluation of existing reports
Consulting
- Operational data analysis
- Optimization of planning
- Operational optimization
- Detailed advice on German regulations and project developement in Germany
Inspections
- Due diligence
- Construction progress control
- Comissioning test
- End of warranty check
- Infrared images
- Technical asset management (TAM)
Expert's reports
- Yield assessment
- Simulation
- Damage report
- Defect assessment
- Evaluation of existing reports
Consulting
- Operational data analysis
- Optimization of planning
- Operational optimization
- Detailed advice on German regulations and project implementation in Germany


Extensive expertise
- Do you need an expert opinion?
- Do your solar plant have any defects?
- Do you have any doubts in regards to the power output of your plant?
- Do you want to display defects at the end of the warranty or guarantee period?
- Shall a recurring test be carried out?
- Would you like to add an energy storage to your PV system?
- Do you need an experienced partner in the field of photovoltaics?
Then you’re at the right place. We are a team of independent consultans and experts in the field of photovoltaics. With years of experience and always up-to-date specialist knowledge, we can provide you with competent support. We operate mainly in Germany, but also internationally.
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Countries of operation
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Inspections
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Yield assessments