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Holmes & Watson
Aerial radiometric thermal scan of a utility-scale solar farm identifying defective cells, activated bypass diodes, and offline strings for O&M maintenance prioritization
Industry Focus

Solar Farm Drone Inspections

Utility-scale solar panel thermal inspections following IEC standards. Rapidly detect hot spots, diode failures, and string outages on NC solar assets.

Industry Overview

Utility-scale solar installations require efficient, comprehensive maintenance to meet yield targets. Manual I-V curve tracing is prohibitively slow for large sites. Holmes and Watson conducts rapid aerial thermography of solar farms following IEC TS 62446-3 standards, quickly identifying cell-level defects, string outages, and shading issues so O&M teams can prioritize maintenance and restore power production.

Key Inspection Targets

  • Module and cell-level thermal anomalies
  • Activated bypass diodes and submodule failures
  • Offline strings and combiner box issues
  • Vegetation encroachment and soiling
  • PID (Potential Induced Degradation) patterns
  • Tracker and inverter heat anomalies

Operational Process

1

Standardized Capture

Flights conducted under specific irradiance conditions (>600 W/m²) for IEC-compliant thermography.

2

Site Scanning

Rapid coverage of large acreages using radiometric thermal payloads.

3

Automated Analysis

AI-assisted defect detection and classification, then verified by certified thermographers.

4

O&M Handoff

Providing localized defect data to maintenance crews in CMMS-compatible formats.

Final Deliverables

Comprehensive thermal orthomosaics, geolocated defect lists, severity classification, estimated power loss calculations, and CMMS-compatible export.

Frequently Asked Questions

Typically 25-75 MW per day depending on geometry and weather. Larger sites are sequenced across multiple days with consistent flight protocols.

Request Services

Get a tailored inspection proposal for your facility or asset portfolio.

Contact Us (540) 632-3458