Open circuit
515
Module hotspot
150
Multiple hotspot
43
Dust, shadow & other (6 categories)
107
815 recorded defects/anomalies
Criticality: High 92% · Medium 8%
Drone Inspection & Asset Intelligence
Drone Inspection Services for Solar, Transmission Lines & Industrial Assets in India
Lesoko plans, captures, processes and reports UAV-based inspections across large industrial sites — RGB and thermal data, geo-tagged findings, criticality classification and structured reporting.
5 Lakh+
Safe Drone Flights
8,300+
Transmission Towers Inspected
21,354+
Power-Line Components Inspected
99%
Defect Detection Accuracy
What you receive
Structured engineering deliverables
Evidence
RGB + thermal imagery
Geo-tagged visual and thermal imagery captured together, so a thermal anomaly can always be checked against its visual context.
What condition was observed, and where
Findings
Classified defect register
Every finding is logged by defect type and criticality (High / Medium / Low), not left as an unsorted image folder.
What needs attention first
Location
Asset-referenced coordinates
Findings are mapped to your existing asset layout — block → inverter → SCB → row → table → panel for solar, or tower and component for transmission lines.
Locating the issue in the field
Context
Temperature & ΔT data
Module/component temperature, hotspot temperature, minimum temperature and delta-T against Lesoko's documented severity thresholds.
Prioritizing genuine anomalies over noise
Report
Structured PDF report
Project details, methodology, equipment used, defect summary, defect list and individual defect evidence pages.
Engineering and management review
Management
Excel register & dashboard
Structured Excel export by component, defect and criticality, alongside a dashboard for tracking status, assignment and resolution.
Tracking findings through to close-out
Report structure
Inside a Lesoko inspection report
Defect 0142
Solar Thermography — RGB + Thermal
High
Block 4›
Inverter 2›
SCB 06›
Row 11›
Table 03›
Panel 18
Module Hotspot
Module temp 41.2°C
Hotspot Temperature
68.7°C
Delta T
27.5°C
Coordinates
GPS logged
01
Component-level findings
Every finding numbered and indexed against the asset's own layout or nomenclature — block, inverter, row and panel for solar; tower and component for transmission lines.
02
Visual and thermal evidence
Location, module/tower coordinates, thermal image, temperature readings and criticality for each finding.
03
Defect classification
Total anomalies by type and by criticality, so the client sees the scale of the finding set before the detail.
04
Inspection locations and asset references
Site, plant capacity, inspection date, irradiance and environmental conditions at time of capture, referenced against the asset's own layout.
05
Structured reporting and deliverables
The methodology followed for this project, the drone and camera specification used, and any areas not inspected or conditions affecting data quality, stated explicitly.
Project evidence
Documented inspection projects, not capability claims
These are recorded findings from completed Lesoko inspection projects — the actual scale and defect data, not illustrative examples.
View Case Study →
Sub-string short circuit
5,496
Vegetation
4,299
Dust
2,037
Multiple hotspot & other (6 categories)
2,016
13,848 recorded defects/anomalies
Criticality: Medium 48% · High 46% · Low 6%
Corrosion
336
Hotspot
143
Vegetation, damage& foreign object
43
Components tracked: tower body, insulator, anti-climb fence, joints,pole leg, jumper
520 records, 224 towers flagged
How it's done
How a Lesoko inspection works, from capture to delivery
01
Capture
Drone flies the planned mission — RGB, thermal or LiDAR as scoped — with every capture point position-logged via RTK/PPK.
02
Process
Raw data is georeferenced, stitched into an orthomosaic, and thermal readings calibrated against logged site conditions.
03
Analyze
Analysts, with AI-assisted flagging, review the dataset against an asset-specific defect taxonomy and grade severity.
04
Validate
A senior reviewer cross-checks every finding against raw data; critical defects get a second analyst's review.
05
Deliver
Findings are compiled into your report package, delivered within target turnaround, with support for follow-up questions.
Inspection services by asset type
Industries and asset types we inspect
Power, Energy & Utilities
Demonstrated: solar and transmission lineRadiometric thermal mapping and high-resolution visual data to protect grid uptime and renewable asset yield
Oil, Gas & Heavy Industry
Scoped per projectCritical asset integrity checks in complex, hazardous environments without putting personnel in harm's way.
Transportation, Rail & Civil Infrastructure
Scoped per projectRapid assessment of vast corridors and structural lifespans using automated flight paths and photogrammetry.
Telecom & Mining Resources
Scoped per projectDetailed 3D modelling and volumetric calculations for asset maintenance and site surveys.
Technical confidence
For the engineer who needs to trust the data
Thermal sensor specifications
Documented
Sensor type
Uncooled VOx microbolometer
Resolution
640 × 512 @ 30 Hz
Stated temperature accuracy
±2°C or ±2%
Scene range
−40°C to 550°C
Digital zoom
16×
Visual (RGB) sensor specifications
Documented
Sensor
1/2″ CMOS, 48 MP
Field of view
84°, f/2.8
Max image size
8000 × 6000
Video
3840×2160 @ 30 FPS
Digital zoom
32×
Specifications above are the sensor package documented on Lesoko's solar thermography projects. A camera's stated temperature accuracy is a sensor specification, not a guarantee for every inspection condition — actual thermal accuracy depends on emissivity, distance, angle and environmental conditions at capture. Sensor configuration is confirmed against the inspection objective for each project.
Why Lesoko
Why industrial teams choose Lesoko
Utility-scale project evidence
Most drone companies describe what drones can do. We can show what our inspections have actually produced — 815 to 13,848 classified findings per project.
Same-day data discipline
Coverage and image quality are checked on site before the team leaves, and data is uploaded the same day.
Component-level structured data
Findings are logged against your asset's own layout — block, inverter, row, table, panel, or tower and component.
Dashboard-backed defect tracking
Where scoped, findings can be tracked from open to resolved through a project dashboard, rather than living only inside a static PDF
FAQ
Questions?
We've Got Answers
Everything you need to know about working with Lesoko. Can't find what you're looking for?
Contact SupportLesoko plans, captures, processes and reports UAV-based inspections across large industrial sites — RGB and thermal data, geo-tagged findings, criticality classification and structured reporting.
Solar plants, transmission lines and other industrial assets. Findings are mapped to your own asset layout — block, inverter, SCB, row, table and panel for solar, or tower and component for transmission lines.
Lesoko reports 99% defect detection accuracy. A senior reviewer cross-checks every finding against the raw data, and critical defects get a second analyst's review.
It depends on the asset, its size and the scope. After you request an inspection, we return a proposal with scope, methodology, deliverables, timeline and commercial terms clearly laid out.
Our target is a severity-graded report within 24-48 hours. Flights are scheduled around your operating hours.
Every flight is DGCA-compliant, flown by DGCA-certified remote pilots under NPNT and DigitalSky protocols.
Project details, methodology, equipment used, a defect summary, the defect list and individual defect evidence pages — plus a structured Excel register and a dashboard for tracking findings through to close-out.
Drone inspection captures what can be seen and thermally measured from the air. Areas not inspected and any conditions that affect data quality are stated explicitly in the report.
Request inspection
Get a scoped quote for your asset
We'll return a proposal with scope, methodology, deliverables, timeline and commercial terms clearly laid out.
- DGCA-compliant flight, scheduled around your operating hours
- Severity-graded report within a 24-48hr target
- Raw data included