Knowledge Hub

Photovoltaics: Expert Reports, Yield Shortfall & Damage

Technical knowledge for operators, investors and insurers – clear, practical and without unnecessary jargon.

NewDamageHotspotsPID

Common Solar Panel Damage – Identify & Assess

Hotspots, PID effect, micro-cracks: the most common PV damage types and what an independent expert report delivers.

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CommissioningQuality

Independent PV Commissioning Inspection

Why the installer should not also be the inspector – standards, inspection scope, typical defects, costs and cost recovery from the installer.

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WarrantyLegal

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.

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Yield ShortfallYield

Causes of Yield Shortfall in PV Systems

Shading, degradation, string faults, inverters – how to systematically narrow down the cause.

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DamageInsurance

PV Damage Assessment: When Do You Need One?

When insurance, warranty or disputes are at stake: which evidence actually counts.

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MonitoringExpert Report

Monitoring vs. Expert Report

Monitoring shows deviations – an expert report explains the causes and provides substantiated assessments.

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CostsPricing

Cost of a PV Expert Report 2026

What costs are realistic, what they depend on and when the installer, insurer or client pays.

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LegalSolar Obligation

Exemption from the Solar Obligation in Germany

When a solar obligation applies, regional differences and under which conditions an exemption is possible.

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