The Difference in One Sentence
Monitoring shows that something is deviating – an expert report explains why, how large the impact is and which measures make sense.
What Monitoring Does Well
- Early warning: deviations, failures, availability
- Trend and time-series analysis
- Comparison of inverters/trackers (if correctly configured)
Where Monitoring Reaches Its Limits
- Evidential value: deviation ≠ cause
- Misconfigurations distort results
- No measurement: many causes remain hypotheses
When an Expert Report Makes Sense
Warranty / Dispute
When you need a technical argument that third parties can follow.
Insurance
When documentation, findings and delimitation are decisive.
Investment
When you need to assess technical risks before a purchase or sale.
Recurring Yield Shortfall
When causes need to be systematically narrowed down and verified.
Typical Process
- Data & document analysis
- On-site inspection
- Measurement/verification
- Assessment + remedial action plan
FAQ
Is monitoring sufficient to prove yield shortfall?
Monitoring shows the deviation. A substantiated assessment often also requires a technical evaluation, documentation and, where applicable, measurements.
When is an expert report appropriate?
When warranty, insurance, disputes or investments are involved – i.e. when the cause must be provable.
What is the typical process?
Analysis, on-site inspection, measurement, assessment with remedial action plan.
Free Initial Assessment
Email: info@gutachterpv.org
Email: info@gutachterpv.org