Aerial thermal and electroluminescence across the whole array. Defects classified, located to the module, and priced by production impact.
A monthly report showing 3% below model is a question, not an answer. It does not tell you which string, which module, or whether the cause is a failed diode, a cracked cell or a dirty row. Inspection turns the question into a work order.
A crew on foot covers a fraction of the modules in a day, and everything unreached is assumed healthy. On a large array that assumption is most of the array.
A string at 2% loss disappears into weather variance in production data and shows up unmistakably in a thermal orthomosaic.
A defect documented while the warranty is live is the manufacturer's. The same defect found later is yours. Timing is most of the value.
Detects temperature anomalies across the array: bypass diode failures, hot spots, disconnected strings, junction box faults, shading losses and soiling patterns. Anything already producing a heat signature shows up. This is the sweep that finds what is losing you money today.
Reveals cell-level cracking and micro-defects that have not yet developed a thermal signature. Micro-cracks from transport, handling or hail, and potential-induced degradation. This is the sweep that finds what will lose you money next year, while it is still a warranty claim.
Run together they cover both present faults and developing ones. Run apart, each has a blind spot the other covers.
The deliverable is a work order, not a picture.
The baseline. Establishes which defects existed at handover, which is what makes a warranty claim provable and keeps remediation with the EPC rather than the owner. If you inspect once, inspect here.
Hail in particular. Damage is frequently invisible from the ground and obvious in electroluminescence, and insurance claims need documentation rather than assertion.
Annual or biennial depending on asset age, climate and how the production data is trending. Progression against prior sweeps is often more useful than any single sweep.
Technical due diligence on an asset changing hands. The buyer wants to know what they are inheriting and the seller wants it documented rather than argued.
We inspect residential and commercial rooftops as well as utility-scale fields. On rooftops the method is the same and the economics differ: a commercial roof inspection is usually commissioned at energisation or when production drifts. Segment detail on commercial and industrial and utility-scale.
Tell us what production is doing and we will tell you what a sweep would likely find.
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