Drone Inspections in Renewable Energy

Published evidence showing how thermal and visual drone inspection maximises solar output, detects faults across 100% of panels, anddelivers ROI exceeding 30:1

AT A GLANCE

SERVICE

Thermal &  Visual Inspection of Solar Arrays

INDUSTRIES

Renewable  Energy — Commercial Rooftop & Ground-Mount Solar

REGIONS

South East  Queensland & Victoria

TECHNOLOGY

DJI Matrice 4T  — Radiometric Thermal, 48MP Zoom

$620K+

Annual Savings (3 Real Sites)

10 min/MW

Drone vs 2–5 hrs/MW Manual

500

Anomalies Found (5.9MW Site)

95–99%

Detection Accuracy

⚡  KEY TAKEAWAY

The Drone Life  documented three real solar inspection projects collectively saving PV owners  over $620,000 annually by identifying defects that on-foot inspections would  likely have missed entirely. [1]

WHYSOLAR PANELS NEED PROACTIVE INSPECTION

Commercial rooftop solar arrays degrade silently. Cracked cells,failed bypass diodes, oxidised connectors, and inverter faults all reduce energy output without triggering obvious monitoring alerts. Traditional manualI-V curve testing takes 2–5 hours per megawatt and typically only samples10–25% of panels. [2]

This means the majority of faults go undetected. Raptor Maps documented that aerial thermography provides 95–99% accuracy in detecting PVanomalies while covering 100% of modules. [3]

THEEVIDENCE: PUBLISHED RESULTS

Pix4D published a case study by Oblivion Aerial SA where a client’s rooftop solar panels were underperforming with no obvious cause. Adrone thermal scan identified two critical issues: a large region of elevated temperature indicating oxidized inverter connectors, and a hotspot with a 32°Cdifferential indicating a broken module. A follow-up confirmed multiple misconnected module groups. Connectors were replaced and performance restored.[4]

The Drone Life’s ROI data across three projects: a 5.9MW systemscanned in 2 hours found 500 anomalies across 17 types affecting 2,900 modules.A 79MW system inspected in 2 days identified 55 inverter faults, 10 offlinestrings (90kW capacity loss), 70 module defects, and 610 sub-module anomalies. One owner estimated savings of $476,104 annually from repairs that on-footinspections would have missed. [1]

⚡  SPEED  COMPARISON

Drones inspect  at 10 minutes per megawatt vs 2–5 hours per MW for manual I-V testing. A  typical commercial rooftop array can be fully inspected in under 2 hours with  zero operational disruption. Manual inspections cost approximately $840/MW in labour alone — drones save up to 75% of this. [1]

WHATDRONE THERMAL INSPECTION DETECTS ON SOLAR

•  Cell-level hotspots from cracked cells, failed bypass diodes, or shading — potential fire hazards [2]

•  Inverter and string faults causing entire sections to underperform silently [4]

•  Oxidised connectors creating dangerous temperature differentials, especially in humid climates [4]

•  Soiling patterns reducing output — informing maintenance cleaning schedules [1]

•  Delamination and manufacturing defects qualifying for warranty claims [1]

•  Sub-module anomalies at cell-level resolution, geo-referenced to exact panel locations [3]

HOWALTIMAR SOLUTIONS DELIVERS THIS

Altimar Solutions provides comprehensive thermal and visual solar inspection:

•  Radiometric thermal imaging at cell-level resolution across 100%of panels

•  48MP zoom for physical condition documentation — cracks, delamination, soiling, junction boxes

•  Geo-referenced anomaly reports via the Altimar IQ dashboard with exact panel locations and severity ratings

•  Performance baselines for ongoing comparison and warranty claim support

•  Zero disruption — inspections conducted from safe altitude with no roof access or system shutdown required

SOURCES & REFERENCES

[1]  The Drone Life — “The Ultimate ROI Guide for Infrared Drone Solar Inspections” ($620K+ savings, 500 anomalies, 2025)

https://thedronelifenj.com/the-ultimate-roi-guide-for-infrared-drone-solar-inspections/

[2]  The Drone Life — “6 Major Benefits of Aerial Thermography for Solar Inspections”

https://thedronelifenj.com/benefits-of-infrared-drone-solar-inspections/

[3]  Raptor Maps — “How to Inspect Solar PV Systems with Drones Part 1” (95–99% accuracy)

https://raptormaps.com/blog-posts/how-to-inspect-solar-pv-systems-with-drones-(uavs)-part-1

[4]  Pix4D / Oblivion Aerial SA — Solar Farm Thermal Inspection Case Study (32°C hotspot, connector fault)

https://www.pix4d.com/blog/pix4dmapper-inspection-solar-thermal

Want to see what this technology could find on your asset?

Altimar Solutions provides drone-based aerial intelligence for commercial and industrial buildings, environmental sites, and coastal areas across South East Queensland and Victoria. We use a DJI Matrice 4T with thermal, zoom and 3D mapping to help you detect problems before they become emergencies.

Book a free 15-minute consultation  → alex@altimar.com.au

altimar.com.au  |  iq.altimar.com.au |  vault.altimar.com.au

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