Electroluminescence (EL) Testing of PV Systems
Proving micro-cracks, cell fractures and hail damage module by module – from the house roof to the solar park by drone. Procedure, limits, cost and value.
Common Solar Panel Damage – Identify & Assess
Hotspots, PID effect, micro-cracks: the most common PV damage types and what an independent expert report delivers.
PV Acceptance Inspection by an Independent Expert
Why the installer should not also be the inspector – standards, inspection scope, typical defects, costs and cost recovery from the installer.
PV Expert Report Before Warranty Expiry
Which deadlines apply, why an expert report before expiry is crucial, and which defects only become visible after years.
Causes of Yield Shortfall in PV Systems
Shading, degradation, string faults, inverters – how to systematically narrow down the cause.
PV Damage Assessment: When Do You Need One?
When insurance, warranty or disputes are at stake: which evidence actually counts.
Monitoring vs. Expert Report
Monitoring shows deviations – an expert report proves the cause and its economic relevance.
Cost of a PV Expert Report 2026
What costs are realistic, what they depend on and when the installer, insurer or client pays.
Exemption from the Solar Obligation in Germany
When a solar obligation applies, regional differences and under which conditions an exemption is possible.
All Knowledge Articles
Direct access to all articles in the knowledge hub.
- Electroluminescence (EL) Testing of PV Systems – Drone, Cost & Value
- Common Solar Panel Damage – Hotspots, PID, Micro-Cracks & Expert Reports
- PV Acceptance Inspection by an Independent Expert – Checklist, Standards & Costs 2026
- PV Expert Report Before Warranty Expiry – Deadlines, Rights & Procedure
- Exemption from the Solar Obligation in Germany
- Incompatible Connections & MC4 Connectors
- Causes of Yield Shortfall in PV Systems
- Monitoring vs. Expert Report
- PV Damage Assessment: When Do You Need One?
- PV Expert Reports: Types, Contents and Process
- The 10 Most Common Faults in Photovoltaic Systems
- How Are Expert Report Prices Calculated?
- Cost of a PV Expert Report 2026 – Prices, Examples & Who Pays