Solar Rooftop Survey Services in India
13,000+ Rooftop
Rooftops Surveyed
<1 cm
RTK GPS Accuracy
6+ GW
Solar Capacity Surveyed
500K+
Safe Drone Flights
700MW+
Rooftop solar installation insights delivered
Fundamentals
What Is a Solar Rooftop Survey?
A solar rooftop survey is a technical assessment of a building’s roof to determine its suitability for a photovoltaic (PV) system. It covers available roof area, structural load capacity, panel orientation, shading patterns, and roof sheet profiles. Everything an engineer needs to design an optimally performing solar installation.
Traditional manual surveys rely on tape measures, guesswork, and physical access creating errors that compound during installation. A drone-based rooftop solar survey replaces all of that with centimetre-level GPS data, high-resolution imagery, and AI-processed 3D models that engineers can directly use in PVsyst and SketchUp.
For factories, warehouses, commercial buildings, and large industrial rooftops, an accurate solar site assessment is the difference between a profitable installation and years of underperformance.
Data Deliverables from a Lesoko Survey
Every survey project delivers a complete data package — ready for engineering, DISCOM approvals, and EPC planning.
- 2D / 3D Roof Plans
- Orthomosaic Maps
- Point Cloud Data
- Shadow Simulation Output
- Obstacle Identification
- SketchUp Models
- Digital Elevation Model
- Sheet Profile Analysis
- PVsyst-ready 3D Scene
- Engineering Report
Industry Problem
Why Solar Survey Is Critical Before Installation
Most rooftop solar underperformance isn’t a panel quality problem. It’s a planning problem. Here’s what gets missed when projects skip a proper solar feasibility study.
Roof structure not assessed for solar load
Industrial roofing in India varies from RCC slabs to old Mangalore tiles to lightweight sheet structures. Without a structural analysis for solar panels, installations risk roof damage or failure under panel weight and wind loads.
Shadow impact on solar panels ignored
Adjacent buildings, water tanks, chimneys, and trees cast shadows that change by season and time of day. Unaccounted shadow analysis for solar rooftop systems leads to 20–40% lower energy yields than projected.
Inaccurate measurements lead to wrong system sizing
Manual measurements miss roof obstructions, undulate surfaces, and irregular layouts. Inaccurate solar planning means undersized or oversized inverters, wrong cable lengths, and installation rework costs.
No visual data for engineers and EPC teams
EPC teams need georeferenced layouts, not rough sketches. Without an orthomosaic map and point cloud, engineers can’t do precise solar panel layout optimization wasting usable roof area.
Physical survey access risks and delays
Manual survey teams on industrial rooftops face real safety risks, especially on sloped or fragile sheet roofs. Lesoko drones eliminate rooftop access risks entirely, surveying large areas in hours instead of days.
Poor solar ROI from avoidable design errors
Every planning error that slips through an inadequate survey compounds into reduced solar energy generation, missed subsidy targets, and poor return on a significant capital investment.
Drone-Based Solar Rooftop Survey Solutions
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.
Building Feasibility Study
A rooftop solar feasibility study evaluates whether the structure can physically and economically support a solar installation. Our drones capture complete geometric and structural surface data to determine viable installation zones.
- Roof area measurement with <1cm GPS accuracy
- Usable vs unusable zone classification
- Solar capacity estimation in kWp
- MNRE-aligned feasibility reporting
2D / 3D Roof Mapping
Our high-resolution drone flights generate orthomosaic maps, digital elevation models, and full 3D rooftop mapping including SketchUp and point cloud deliverables — directly usable by your engineering and design teams.
- Georeferenced orthomosaic imagery
- SketchUp and 3D model exports
- Digital Surface Models (DSM/DEM)
- AutoCAD-compatible 2D layout plans
Shadow Analysis Simulation
Lesoko’s time-based shadow analysis simulation models how obstacles — tanks, parapets, adjacent structures, trees — cast shadows on your roof across every hour of the year. Inputs are PVsyst-ready for accurate energy yield simulation.
- Annual and seasonal shadow mapping
- Hour-by-hour simulation for India latitudes
- PVsyst 3D scene file delivery
- Shading loss quantification
Solar PV Module Measurement & Layout
Precise solar PV module measurement and layout planning using drone data eliminates guesswork. Our team maps optimal panel rows, inter-row spacing, and cable routing paths based on actual roof geometry.
- Panel count and capacity optimization
- Row spacing for zero inter-row shading
- Structural member detection for mounting
- Sheet profile identification for rafter alignment
Why Better Site Data Compounds Across Every Phase
Structural Member Detection
Our sheet profile analysis identifies purlin and rafter positions, spacing, and load capacity data enabling engineers to specify correct mounting systems without a single manual measurement on-site.
Obstacle Identification & Clearance
Every rooftop object — AC units, vents, skylights, water tanks, telecom equipment is identified and mapped in the 3D model with exact coordinates, enabling accurate exclusion zones and cable routing in your design software.
Solar Layout Planning Support
From the drone data, Lesoko generates optimal solar panel layout plans maximising installed capacity while respecting structural limitations, fire safety clearances, maintenance walkways, and MNRE guideline setbacks.
PVsyst-Ready Scene Files
Our 3D models export directly as PVsyst horizon and near-shading scenes eliminating the hours EPCs typically spend reconstructing rooftop geometry manually in simulation software.
GIS & Georeferenced Outputs
All drone outputs are georeferenced meaning your project data integrates with GIS platforms, satellite basemaps, and government solar rooftop portals for DISCOM submissions and net metering applications.
Rapid Turnaround, Remote Delivery
Surveys are typically completed in a single site visit. Processed data packages are delivered digitally within 3–5 business days, enabling faster project approvals and reducing your pre-sales cycle time significantly.
Business Value
Benefits of a Professional Solar Rooftop Survey
The survey is an upfront investment that pays back across the entire project lifecycle — from design through installation through 25 years of energy generation.
Maximise energy generation
Optimal panel placement based on real shadow and orientation data increases annual energy yield by 15–25% versus guesswork layouts.
Reduce installation errors
Accurate dimensions and structural data eliminate costly rework during installation no surprise obstructions, no wrong mounting specs.
Improve project ROI
Better system sizing, accurate yield projections, and reduced rework costs directly improve the financial return on your solar investment.
Faster DISCOM approvals
Georeferenced outputs and structured reports speed up net metering applications and DISCOM technical approvals across all Indian states.
What You Get from Every Solar Rooftop Survey
Every Lesoko solar rooftop survey includes a complete data package — not just images. Eleven design-ready deliverables, all geo-referenced, in multiple export formats.
Orthomosaic Map
2D / 3D Rooftop Models
Digital Elevation Model (DEM)
Contour Maps
Point Cloud Data
SketchUp / CAD-Ready Models
Aerial Photos & Videos
Sheet Profile Analysis
Why drone monitoring is superior
The Monitoring Gap: Traditional Methods vs. Lesoko
Most wind projects still rely on contractor-reported progress, periodic site visits, or in-house EPC tracking teams. Each approach carries structural blind spots that drone-based monitoring eliminates.
Solar Rooftop Survey Services Across India
From large-scale ground-mounted farms in Rajasthan and Gujarat to commercial rooftop installations across Tamil Nadu, Karnataka, and Maharashtra — Lesoko’s drone inspection teams are deployed nationwide.
Every state has its own inspection demands. Rajasthan and Gujarat see extreme dust accumulation, making bi-annual thermal inspections essential to prevent 15–20% output losses. Tamil Nadu and Karnataka have rapidly growing rooftop solar capacity that needs regular post-monsoon fault clearance. Maharashtra and Telangana host large C&I portfolios where even a 1% output drop across multiple sites represents significant revenue loss.
Our DGCA-certified teams operate across all major solar corridors covering utility-scale IPPs, EPC handover inspections, and commercial rooftop O&M contracts in every region.
Solar Rooftop Survey for Every Stakeholder
- Solar EPC Contractors
- Commercial & Industrial Rooftop Owners (C&I)
- Renewable Energy Developers & IPPs
- Solar Asset Investors & Portfolio Managers
- Infrastructure & Asset Management Firms
- Government Bodies & Utility Rooftop Programmes
How Often Should a Solar Rooftop Be Inspected?
Once your solar rooftop is installed, regular inspection maintains peak performance and catches faults before they cause generation losses that run for years. The standard recommendation is at least one drone inspection per year for all installed solar rooftops.
Soiling alone can reduce output by 15–20% between washes. Bi-annual inspections are strongly recommended for these regions. Post-monsoon inspections are critical across all states. Storm damage, hail impact, bird droppings, and moisture ingress accumulate during the monsoon season and may not trigger SCADA alerts until significant generation losses have already occurred. A post-monsoon drone inspection catches all of this before it affects your next quarter’s output.
Trusted By Industry leaders
What Solar Operators Say About Our Rooftop Surveys
“Lesoko’s solar rooftop survey saved us an entire week of site revisits. The 3D model and shadow analysis were exactly what we needed to finalise the panel layout for a complex industrial shed rooftop. Report delivered in 36 hours.”
Solar EPC Contractor · Maharashtra Project Manager ·
“We used to send workers onto rooftops for site surveys — always a concern on old industrial buildings. Lesoko’s drone survey is faster, safer, and gives us far more design data than we were getting before. It’s now standard on every project.”
Renewable Energy Developer · Tamil Nadu Site Engineer ·
“The building feasibility report identified a structural issue on one roof section before we’d ordered any panels or mounting hardware. That single finding from the rooftop survey saved us from a very expensive installation mistake.”
Asset Management Firm · Gujarat O&M Head ·
Why Choose Lesoko
India's First Drone-Based Solar Survey Company
Lesoko is not a solar EPC that added a drone. We are a drone data company that has built deep solar domain expertise over thousands of site surveys across India.
Solar projects inspected
Safe flights completed
Survey area covered
Monitoring costs saved
Sub-centimetre accuracy
GPS-tagged drone data at <1cm precision, processed through industry-standard photogrammetry pipelines. Not surveyor estimates.
Engineer-ready deliverables in 3–5 days
Your engineering team receives PVsyst-ready 3D scenes, AutoCAD plans, and shadow simulation outputs.
PAN India drone operations
Active teams across Tamil Nadu, Maharashtra, West Bengal, Bihar, Gujarat, Rajasthan and more. Multi-site programs welcome.
Proven at scale with India's largest EPCs
Worked with L&T, Sunedison, Enerparc, Amplus, Refex Energy, and government bodies across programs totalling 3.5GW+.
Solar Rooftop Survey Use Cases in India
Lesoko has surveyed every rooftop type from 500MW government programs to single factory buildings. Our workflow adapts to your project size and complexity.
Industrial Factories & Manufacturing Units
Large shed rooftops with north-light or A-frame profiles, multiple structural bays, and rooftop HVAC systems. Drone surveys capture complete geometry in a single flight including all obstacles and structural member positions for mounting design.
Commercial Buildings & IT Parks
Multi-level terraces, complex setback requirements, diverse rooftop equipment. Commercial rooftop solar feasibility studies need precise usable area calculations to justify investment to building management committees.
Warehouses & Logistics Parks
Among India's most solar-viable asset class large flat or low-slope roofs with minimal obstructions. Lesoko surveys help logistics companies accurately estimate capacity and secure EPC contracts faster.
Government & Institutional Buildings
Schools, hospitals, government offices under PM Surya Ghar and state RESCO programs. Lesoko has worked with WBREDA, BREDA, and MEDA on large multi-site survey programs requiring standardised deliverables.
Solar Rooftop Survey Cost & Packages in India
Fixed packages by system size. No hidden costs. Survey quote within 24 hours. Survey + inspection combination packages available.
Small Rooftop
- 🔸Drone RGB aerial survey flight
- 🔸2D orthomosaic map
- 🔸Roof area measurements & panel count
- 🔸Shadow & shading analysis
- 🔸Report delivered in 48 hours
- 🔸DGCA-compliant operations
C&I Rooftop
- Full drone survey + RGB data capture
- 2D & 3D rooftop models
- Orthomosaic + DEM + contour maps
- Detailed shadow & shading analysis
- Building structural feasibility report
- Solar PV module capacity measurements
- SketchUp / AutoCAD compatible exports
- Client dashboard access and PDF + Excel + GIS + image exports
Multi-Site Contract
- 🔸Annual or bi-annual survey scheduling
- 🔸Volume pricing for multiple sites
- 🔸Priority dispatch & fast turnaround
- 🔸Trend analysis across inspections
- 🔸Dedicated account manager
- 🔸Survey + thermal inspection combo
- 🔸Multi-format delivery + dashboard
Every solar rooftop survey includes access to our secure cloud-based client dashboard giving solar EPCs, developers, and asset managers instant access to all survey data, models, reports, and recommendations from any device.
Dashboard Features
- Secure role-based login for your team and clients
- Geo-tagged rooftop data on interactive maps
- 2D/3D models with interactive measurement overlays
- Shadow analysis visualisation with time-of-day slider
- AI-driven recommendations for panel placement optimisation
Download PDF, Excel, GIS, CAD, and raw image export
Data Security
Get Your Solar Rooftop Survey Quote in 24 Hours
Phone/ Whatsapp
+91 78457 26375/ 7845726374
Email Us
sales@lesoko.in
Head Office
Request Solar Rooftop Survey Quote
Frequently Asked Questions
Without an accurate survey, solar installations face wrong panel counts, incorrect mounting designs, shading losses, and structural failures. A drone rooftop survey measures usable roof area, identifies obstacles and shading patterns, assesses structural load capacity, and produces design-ready models — preventing costly rework after installation begins.
The on-site drone flight takes 30 minutes to 2 hours depending on roof size and complexity. Processed deliverables — including all 2D/3D models, shadow analysis, and the final report — are ready within 48 hours of the site visit.
Technically possible, but a significant financial risk. Without a solar site assessment, you risk incorrect system sizing, structural damage from overloading, poor energy yield from unaccounted shading, and installation rework costs that can exceed the survey fee many times over. For industrial and commercial projects above 50kW, a professional solar survey is essential — and often required by EPCs and financiers.
A standard industrial rooftop (5,000–20,000 sq ft) is typically surveyed in a single day’s flight mission. Data processing, 3D modelling, shadow simulation, and deliverable preparation takes 3–5 business days. Compare this to 2–4 days of on-site manual survey plus additional weeks for processing and re-measurement.
Lesoko provides solar rooftop survey services across India including Tamil Nadu, Maharashtra, Rajasthan, Gujarat, Karnataka, Telangana, Andhra Pradesh, and Kerala. Key cities covered include Chennai, Mumbai, Pune, Jaipur, Ahmedabad, Bengaluru, Hyderabad, and Kochi. Contact us for project availability in your location.
Yes. Lesoko’s survey deliverables including the building feasibility report, shadow analysis, and CAD-ready 3D models are accepted by solar EPCs, DISCOM authorities, and financial institutions for project approval, net metering applications, and loan documentation. The reports meet IEC and DGCA documentation standards.
