Drone Solar Panel Inspection Services for Solar Power Plants in India
5 Lakh+
Drone Flights Completed
34+ GW
Solar Capacity Inspected
99%
Defect Detection Accuracy
₹210Cr+
Saved in O&M Costs
5000+
Defects identified
Why Solar Plants Lose Output and How Aerial Drone Inspection Fixes It
Solar power plants degrade silently. A hotspot forming on one module, a bypass diode failing in a string, dust accumulating unevenly across rows. None of these trigger alarms in your SCADA system, yet together they can reduce your plant’s generation output by 10–25% before a single fault is logged in your O&M records.
Traditional manual inspection is the wrong tool for this problem. Manual walkthroughs cover just 1 MW per day. Drone solar panel inspection covers 10–20 MW in the same time. Walking rows of panels across thousands of modules takes weeks, misses thermal faults entirely, exposes workers to height and electrical risks, and produces no geo-referenced, data-driven report that your O&M team can act on.
Drone-based aerial inspection of PV power plants changes this. A single RTK drone flight covers your entire plant in hours capturing panel-level radiometric thermal and high-resolution RGB imagery, processed by AI into a prioritised, geo-tagged defect report. Having completed over 34+ GW of solar inspections across India, Lesoko delivers the accuracy, speed, and data depth that modern O&M teams need enabling predictive maintenance that stops faults before they become generation losses.
What Is Drone Solar Panel Inspection?
Drone solar panel inspection also called aerial photovoltaic inspection or UAV solar inspection. Is a method of assessing the condition of solar power plants using unmanned aerial vehicles (UAVs) equipped with calibrated radiometric thermal infrared (IR) cameras and high-resolution RGB sensors.
Unlike manual ground-level checks using handheld thermal cameras, drone-based inspection captures simultaneous thermal and visual data across an entire solar site in a single automated flight. Every frame is geo-referenced using RTK GPS positioning, meaning each defect is tied to an exact panel location within your plant’s layout. The result is a panel-level defect map.
Solar plant operators across India use drone thermography to identify hotspots, cracked modules, bypass diode failures, open circuits, dust accumulation, shading anomalies, PID, string reverse polarity, and vegetation encroachment — detecting energy yield losses that are completely invisible during ground inspection. Lesoko’s aerial solar inspection service is compliant with IEC 62446-3, the international standard for thermographic inspection of photovoltaic systems, ensuring your inspection data meets global quality benchmarks accepted by insurers, lenders, and EPCs.
Thermal Drone Technology for Solar Farm Inspection
Lesoko’s drone-powered survey process captures, processes, and delivers engineer-grade data for every rooftop solar project — from a single 500 sqm commercial terrace to a 10-acre industrial complex.
Radiometric Thermal Infrared Camera
Every Lesoko drone solar inspection uses calibrated radiometric IR cameras that record absolute temperature values not just relative heat differences. This means every thermal anomaly has an exact temperature reading tied to it, enabling precise fault classification and severity scoring.
- 0.05°C thermal sensitivity
- IEC 62446-3 compliant data
- Radiometric TIFF output per frame
- Captures faults invisible to RGB cameras
High-Resolution RGB Camera
Simultaneous RGB capture at panel-level resolution provides visual confirmation of physical damage — cracks, delamination, soiling, and structural issues that complement thermal data and enable clearer maintenance prioritisation in the final defect report.
- High-res orthoimage of entire plant
- Panel-level crack and soiling visibility
- Vegetation and shading mapping
- Correlated with thermal data per panel
RTK Drone with Automated Flight Planning
Real-Time Kinematic (RTK) GPS drones fly pre-programmed routes with centimetre-level accuracy, ensuring 100% panel coverage, consistent altitude, and DGCA-compliant flight operations across solar farms of any size and terrain type.
- Centimetre-level GPS positioning
- Automated waypoint flight routes
- 100% panel coverage guaranteed
- DGCA regulatory compliance built-in
Electroluminescence (EL) Imaging
For cell-level crack detection beyond the capability of thermal imaging, Electroluminescence (EL) imaging is available as an add-on service capturing micro-cracks and internal cell fractures invisible even to infrared cameras, enabling warranty claims and module-level replacement decisions.
- Detects cell-level micro-cracks
- Identifies inactive cell regions
- Supports manufacturer warranty claims
- Complements thermal inspection data
How Drone Solar Panel Inspection Works
Flight Planning
Our engineers analyse your solar plant layout, terrain, and area. Automated UAV flight paths are programmed to ensure 100% panel coverage, optimal irradiance conditions, and full DGCA compliance specific to your site.
Aerial Scanning
RTK drones fly pre-programmed routes capturing simultaneous radiometric thermal IR and high-resolution RGB imagery at panel-level resolution. All data is geo-tagged in real time using centimetre-level RTK GPS.
AI Data Analysis
Thermal and RGB imagery is processed through AI-powered defect detection algorithms that automatically classify all 9 fault types by severity, location, and priority across every panel in your plant.
Report Delivery
A geo-tagged defect report with thermal images, severity maps, and prioritised maintenance recommendations delivered to your team dashboard within 48 hours in PDF, Excel, and GIS shapefile formats.
Solar Panel Defects Detected by Drone Inspection
We identify and severity-rate 9 critical PV defect types — enabling precise, prioritised maintenance decisions across every panel in your plant.
Hotspot
Multiple hotspots
String Reverse Polarity
Open Circuit
Shadow
Damage
Vegetation Overgrowth
Dust & Soiling
Bird Droppings
Benefits of Drone Solar Panel Inspection
75% Faster Than Manual
A 50 MW plant that takes weeks to inspect manually is completed in a single day. No waiting, no weather delays from scaffolding setup.
100% Panel Coverage
Every panel in your plant is assessed — not a 10–25% sample. No fault gets missed because a worker skipped a row.
Thermal Faults Detected
Hotspots, bypass diode failures, and cell degradation are invisible to visual inspection. Thermal imaging finds them before they become revenue losses.
45% Lower Cost Per MW
Eliminating manual labour, travel time, and multi-day site stays makes drone inspection significantly more cost-effective especially for large plants.
Zero Safety Risk
No workers on panels. No height risks. No electrical exposure. Drone inspection eliminates the HSE liability that comes with traditional methods.
AI-Powered Defect Reports
Machine learning classifies every fault by type and severity. Your O&M team gets a prioritised action list.
Pan-India Coverage
Drone Solar Inspection Across India's Key Solar States
We provide professional Drone solar panel inspection services across India from large-scale ground-mounted farms in Rajasthan and Gujarat to commercial rooftop installations in Tamil Nadu, Karnataka, Telangana, Andhra Pradesh, Madhya Pradesh, Punjab and Maharashtra.
Our Drone solar panel inspection services in Rajasthan cover plants across the Jodhpur, Barmer, and Jaisalmer solar corridors. India’s highest-irradiance zones where dust accumulation and extreme heat make bi-annual inspections essential. Our Drone Solar panel inspection services in Tamil Nadu and Karnataka support both utility-scale IPPs and commercial rooftop operators across the state’s rapidly growing solar capacity.
Solar Inspection Services for Every Segment
- Independent Power Producers (IPPs)
- EPC Contractors
- O&M Service Providers
- Commercial & Industrial Rooftop
- Solar Asset Investors
- Solar Developers
Measurable Impact.
A 600KW rooftop solar power plant was inspected after reporting a steady drop in output. Regular dust accumulation was the primary suspected cause. Lesoko’s drone flew for just 1.5 hours and delivered cell-level defect mapping across all 1,430 modules — enabling the O&M team to take same-day action.
Outcomes Achieved
Defect Breakdown — % of 600KW
A major 60MW ground-mount plant in Rajasthan — prone to vegetation due to its environment — required thermal inspection as part of an asset transfer due-diligence process. Lesoko’s drone covered all 1,90,476 modules over 36 hours, delivering a comprehensive module-level repair/replace report.
Outcomes Achieved
Defect Breakdown — % of 60MW
A 31.4MW floating solar installation experienced persistent performance issues and suspected cable damage from aquatic wildlife (turtles, fish). Lesoko was deployed on a recurring basis to provide rapid defect data. Despite modules being cleaned the day before inspection, bird drop defects accounted for 11.4% of total plant capacity.
Outcomes Achieved
Defect Breakdown — % of 31.4MW
Drone Technology We Use for Solar Farm Inspection
Enterprise-grade hardware combined with AI-powered analytics — delivering inspection accuracy no manual team can match.
RTK-Enabled Drones
RTK-enabled UAVs are the backbone of accurate solar PV inspection by drone providing the centimeter-level positioning needed to geo-tag every defective photovoltaic module to its exact string and row location.
Radiometric Thermal Camera
Calibrated IR cameras detect temperature variations with 0.05°C sensitivity identifying hotspots, faulty cells, and overheating panels at scale across the entire plant.
AI Defect Detection
Proprietary machine learning algorithms automatically classify defects by type and severity across thousands of panels delivering 99% detection accuracy.
GIS Mapping & Analytics
GIS-integrated aerial solar panel inspection results allow asset managers to overlay defect data on plant layout maps enabling precise, row-by-row maintenance planning across large photovoltaic installations.
How Often Should Solar Panels Be Inspected?
Solar panels should be inspected at least once a year to maintain optimal performance and catch faults before they become revenue losses. However, inspection frequency depends on your plant type, location, and operating conditions.
Plants in high-dust regions where soiling alone can reduce output by 15–20% — benefit from bi-annual inspections. Post-monsoon inspections are strongly recommended across all regions to identify storm damage, hail impact, and moisture ingress that accumulate silently during the monsoon season.
Trusted By Industry leaders
What Solar Plant Operators Say
“Lesoko’s drone inspection identified 312 hotspots and 94 bypass diode failures across our 100 MW plant in just 2 days. Our manual team had walked the site 3 times and found nothing. The ROI was immediate.”
Asset Manager · 100 MW IPP · South India
“We use Lesoko for pre-commissioning inspection on every project now. The geo-tagged report and dashboard access makes contractor sign-off so much faster. Quality of delivery is consistently excellent.”
Project Director · Solar EPC Contractor · Gujarat
“Managing O&M across 6 solar plants becomes significantly easier with Lesoko’s annual inspection contracts. The prioritised maintenance recommendations alone save us at least 2 weeks of planning work per site per year.”
O&M Head · 6-Plant Portfolio · Rajasthan
Inspection Report Deliverables
Thermal IR + RGB Inspection Report
Side-by-side radiometric thermal and visual imagery for every identified defect with severity classification.
Geo-Tagged Defect Map
Every fault GPS-tagged on an interactive solar plant map — your O&M team knows exactly which panel to replace first.
PV Module Thermography Analysis
Infrared thermography of individual modules with temperature data, hotspot classification, and estimated power loss per fault.
Multi-Format Export
PDF report, Excel defect log, GIS files, and raw thermal image exports — compatible with your CMMS and asset management tools.
Lesoko Client Dashboard
Our Drone Solar Panel Inspection Services include a secure cloud-based client dashboard where solar plant operators can access inspection data, thermal images, and performance insights from anywhere.
The dashboard provides a clear overview of solar plant health, helping teams quickly identify defective panels and plan maintenance actions.
Dashboard Features
• Secure role-based access and login
• Geotagged defect detection on interactive solar plant maps
• RGB and thermal inspection images with severity classification
• AI-driven defect analytics and performance insights
• Prioritized maintenance recommendations
• Downloadable inspection reports (PDF, Excel, images, GIS files)
Get Free Quote in 24 Hours
Phone/ Whatsapp
+91 78457 26375/ 7845726374
Email Us
sales@lesoko.in
Head Office
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Frequently Asked Questions
Drones equipped with radiometric thermal infrared cameras fly pre-programmed routes over your solar plant, capturing heat signatures at panel level. Thermal faults hotspots, bypass diode failures, open circuits. Invisible to the naked eye appear clearly in thermal imagery. AI software classifies each defect by type and severity, and delivers a geo-tagged report within 48 hours. Lesoko’s pilots are DGCA-certified and operate pan-India, mobilising to any site within 48–72 hours.
Drone inspections detect hotspots, multiple hotspots, bypass diode failures, open circuits, string reverse polarity, micro-cracks, delamination, soiling, dust accumulation, shading, vegetation overgrowth, bird droppings, and PID (Potential Induced Degradation) all at panel level across the entire plant in a single flight.
Annual thermal inspection is the minimum recommended for most plants. Utility-scale ground-mount plants ideally need inspection every 6 months. Plants in high-dust, high-heat zones like Rajasthan and Gujarat may require quarterly inspections due to accelerated soiling and thermal stress. A post-monsoon inspection (Oct–Nov) is strongly recommended for all plants to catch water ingress, delamination, and vegetation-related shading changes.
A hotspot is a localised area on a solar panel that overheats due to cell damage, shading, soiling, or bypass diode failure. It causes energy loss and, if left untreated, permanent panel damage. Hotspots are invisible to the naked eye but show up clearly in thermal infrared imagery. Drone-based thermal inspection detects and geo-tags every hotspot across your entire plant, enabling your O&M team to prioritise repairs accurately.
Every Lesoko drone inspection delivers a complete data package. You receive a radiometric thermal IR and RGB inspection report with side-by-side imagery for every defect, a geo-tagged defect map showing every fault’s exact panel location on your plant layout, a PV module thermography analysis with temperature data and estimated power loss per fault, and a multi-format export including PDF report, Excel defect log, GIS files, and raw thermal images. All delivered to your secure client dashboard within 48 hours of the flight.
IEC 62446-3 is the international standard governing thermographic inspection of photovoltaic systems from airborne platforms. Compliance means your inspection data, thermal imagery, and defect reports meet quality benchmarks accepted by international insurers, lenders, EPCs, and regulators. This makes the data admissible for warranty claims, due diligence audits, and insurance assessments. Lesoko’s drone inspection service is fully IEC 62446-3 compliant.
Significantly. In Lesoko’s Andhra Pradesh case study, soiling alone caused an 80 KW loss — 13.3% — from a 600 KW plant. In Rajasthan and Gujarat, dust-related generation losses of 15–30% are common. Thermal drone inspection quantifies exactly which modules are affected and by how much, enabling targeted module-level cleaning rather than costly full-plant washes.
The monsoon season exposes solar plants to water ingress, panel delamination, junction box damage, and rapid vegetation growth that causes new shading losses. These defects are not visible during routine monitoring but directly reduce generation. A post-monsoon thermal drone inspection ideally in October or November catches all of these issues before they compound through the high-irradiance winter generation season, protecting your annual yield targets.
Thermal drone inspection covers 10–20 MW per day versus 1 MW per day for manual ground teams. It detects faults completely invisible to the human eye, eliminates height and electrical safety risks, and delivers a geo-tagged AI-analysed report. In one Lesoko project, a 60 MW plant that would have taken a ground team weeks was completed in 36 hours. For any plant above 1 MW, drone inspection is faster, safer, more accurate, and more cost-effective.
Electroluminescence (EL) testing reveals micro-cracks, potential-induced degradation (PID), and inactive cell areas that thermal cameras cannot detect under normal irradiance. It is recommended when a thermal inspection identifies anomalous hotspot patterns suggesting cell-level damage that requires root-cause analysis. EL testing combined with thermal drone inspection gives you the most complete picture of panel health critical before warranty claims or asset acquisitions.
