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Utility & Infrastructure Corridors

Power Line & Corridor LiDAR Surveys

Kilometre-scale drone LiDAR mapping of overhead power lines, road and rail routes, and utility corridors – tower positions, conductor sag profiles, and ground clearance at every span, captured without setting foot on private land.

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±2-5 cm Accuracy
Zero Ground Access Needed
EASA Certified
CORRIDOR SCAN
Classified drone LiDAR point cloud of a high-voltage power line corridor in Ireland
EASA & IAA
Certified Operators
€13M
Public Liability Insurance
500+
Projects Nationwide
Since 2016
one of Ireland’s longest-established
2-Day
Turnaround on Deliverables
What You Receive

Key Deliverables

Everything a planning application, clearance assessment, or corridor design needs – delivered in the coordinate system your engineers already work in.

Classified Point Cloud

LAS/LAZ point cloud with ground, vegetation, and structure classes separated – 150–500+ points/m² along the corridor.

Tower & Pole Positions

Every tower and pole surveyed in ITM (EPSG 2157) coordinates with Malin Head heights – ready for direct overlay on OSi mapping and design drawings.

Conductor Sag Profiles

Sag profile extracted for each span from the LiDAR returns on the conductors themselves – measured, not modelled.

Ground Clearance Report

Minimum ground clearance calculated at every span – the data planning authorities and grid operators require for OHTL clearance compliance.

Bare-Earth DTM & Contours

LiDAR penetrates hedgerows and scrub along the route to deliver true ground levels – DTM, contours, and DXF/DWG for design.

Orthomosaic Corridor Strip

High-resolution georeferenced imagery of the full corridor for visual context, landowner engagement, and planning documentation.

Our Process

How a Corridor Survey Works

From route plan to clearance report – without access agreements, road closures, or crews under live lines.

01

Corridor Flight Planning

The route is divided into flight blocks following the line or corridor, with airspace coordination and IAA authorisations handled by us. Because the survey is flown, there is no need for access agreements with the landowners along the route.

02

LiDAR + Photogrammetry Capture

We fly the DJI M300 RTK with the Zenmuse L2 LiDAR sensor – up to 240,000 laser pulses per second with five returns per pulse – capturing conductors, towers, vegetation, and true ground level in a single pass. Photogrammetry adds the visual context layer.

03

Classification & Analysis

The point cloud is classified into ground, vegetation, and structures. Conductor sag profiles and minimum ground clearance are extracted for every span and cross-checked against the tower positions.

04

Deliverables Within 48 Hours

Classified LAS/LAZ, bare-earth DTM, DXF/DWG, GeoTIFF orthomosaic, and the span-by-span clearance report – all in ITM (EPSG 2157) with Malin Head heights, delivered within 48 hours of the final flight.

Power line corridor in a drone LiDAR point cloud coloured by height
A power line corridor in the LiDAR point cloud, coloured by height: conductors, poles and ground separated in 3D.

Need Corridor Data Without the Ground Access Problem?

Send us the route – a line on a map is enough – and the outputs you need. We will come back with a fixed price and methodology within 24 hours.

Request a 24-Hour Quote Call 087 205 2331
Method Comparison

Drone LiDAR vs Traditional Corridor Survey

Surveying kilometres of live infrastructure across private land is exactly where drone LiDAR changes the economics.

Drone LiDAR (DSI) Traditional Ground Survey
Land accessNone required along the routeAccess agreements with every landowner
Live linesNon-contact, flown at stand-off distanceCrews working under energised conductors
CoverageContinuous point cloud of the full corridorSampled measurements at selected spans
Vegetated groundLiDAR penetrates to true ground levelLine-of-sight required; clearance work needed
ProgrammeKm-scale corridors flown in daysExtended fieldwork programme
OutputsClassified cloud, DTM, sag & clearance per span, orthoPoint observations and field notes
Pylons and conductors picked out in a drone LiDAR point cloud over farmland
Pylons and conductors picked out in the point cloud over farmland and hedgerows.
Applications

Who Uses Corridor LiDAR?

Any project where kilometres of linear infrastructure meet planning, design, or compliance requirements.

Solar & Wind Development

Transmission & Distribution Lines

Vegetation Encroachment Monitoring

Road & Rail Corridors

Flood Defence & Embankments

Pipeline & Utility Routes

When Corridor LiDAR Is – and Isn’t – the Right Tool

Drone LiDAR earns its keep on corridors from roughly a kilometre upwards, on routes crossing private land, vegetated ground, or live infrastructure – anywhere the cost of ground access, safety management, and fieldwork time dominates a traditional survey. On our 15km 220 kV / 110 kV corridor project, the alternative was access agreements with dozens of individual landowners and an extended fieldwork programme; the drone survey required no ground access at all.

If you only need a handful of accessible spans checked, or a short section with clear line-of-sight from public land, a conventional survey crew may genuinely be the cheaper option – and we will tell you so when you send us the scope. For the full picture, see our honest guide to the limitations of drone LiDAR.

Our Recommendation

Send us the route as a line on a map, the voltage or asset type, and the outputs you need (clearances, DTM, design drawings). We will confirm whether LiDAR is the right method and return a fixed price within 24 hours.

Proven in the Field

Featured Corridor Project

15km of 220 kV & 110 kV Lines – Zero Ground Crew

Combined LiDAR and photogrammetry survey of two high-voltage lines for a solar farm planning application: every pole, span, sag point, and ground clearance mapped remotely. Read the full case study.
Related Services

Other Services You May Need

LiDAR Survey

Bare-earth DTMs and classified point clouds through vegetation – the core technology behind corridor mapping.

Topographical Survey

Engineering-grade topographic plans with ±5 cm accuracy and CAD-ready outputs.

As-Built Survey

Design-vs-actual verification for completed infrastructure, in ITM (EPSG 2157).
Featured Case Study

70 km of Wind Farm Routes, Captured by LiDAR

Access routes and turbine stands on the Limerick-Clare border, flown over very undulating terrain with Starlink-linked RTK corrections, live tree felling and ecological monitoring on site.

Read the Case Study →
FAQ

Frequently Asked Questions

Everything you need to know about drone corridor and power line LiDAR surveys.

No. The survey is flown, so there is no need for access agreements with the landowners along the corridor and no crews crossing crops or gated land. On our 15km high-voltage corridor project, several parcels were completely inaccessible from the ground – the drone captured every span regardless.
Yes. The survey is entirely non-contact, flown at a safe stand-off distance from energised conductors – no outage, no rope access, no crews working under live lines. We have surveyed live 220 kV and 110 kV transmission lines this way.
±5 cm as standard, ±2 cm with dense ground control. All deliverables are in ITM (EPSG 2157) with Malin Head heights, so tower positions and clearance data overlay directly on OSi mapping and your design drawings.
Corridors are quoted per project based on route length, terrain, and the outputs required. LiDAR surveys start from around €1,500; a km-scale corridor with clearance analysis is priced against the route specifics. Send us the route and we return a fixed quote within 24 hours.
Deliverables are issued within 48 hours of the final flight – classified point cloud, bare-earth DTM, drawings, orthomosaic, and the span-by-span clearance report.
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Related:Drone surveys in Northern Ireland: cross-border rules

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