STRALEN

STRALEN

Robots that live on the power line

Ice building on the north conductor.
A pine leaning 3.2 metres into span 214.
A cracked insulator on tower 215.
A clamp running 46 degrees too hot.
Smoke, eleven kilometres west.
One broken strand out of fifty-four.
Ice load 4.1 kg/m
Ice building on the north conductor.
Vegetation · span 214
A pine leaning 3.2 metres into span 214.
Heron 02 · Span 214–215
Visible · −4 °C air
0.26 km · 2.4 km/h
Every span. Every night. Nobody on the tower.

Climbs on in ten minutes.Sees forty metres either side.Calls the crew at once.

01 · Install

Climbs on in ten minutes.

02 · Inspect

Sees forty metres either side.

03 · Respond

Calls the crew at once.

Alert · just now
Span 215, phase C: clamp at 71.4 °C, 46 degrees above its neighbours. Load 612 A.
Dispatch crewOpen span 215

Every night, on the record.

Stralen robots have ridden 11,400 km of line across four utilities since 2023.

↔ Drag to explore
2,140 km
inspected in August
1,286
findings logged
41
fixed before they failed

The fleet

Three robots. One crew that never climbs down.

Heron lives on the wire. Wren flies the towers. Condor patrols the whole corridor. Together they see every metre of your network, every night, and file one plain report in the morning.

Built for every span

Pick by the job: live-line inspection, tower close-ups or whole-corridor patrol. Every Stralen robot reports into the same Line Record, so findings from all three land in one list.

01 · Line robot

Heron

Rides the conductor. Inspects every span, every night.

Heron hangs on an energised conductor and drives itself from tower to tower, crossing dampers and spacers on its own. It charges from the sun and the line it rides, so it can stay out all season.

38 kg

69–500 kV

Hot-stick install

0

spans a night

0

kg in a padded case

0.0 km/h

on the wire

−0 °C

and still working

02 · Tower drone

Wren

Flies the tower in six minutes. Reads the bolt numbers.

Wren flies the same scripted orbit around every tower, so every photo lines up with last year’s. It folds into a 40 cm case and flies from the crew truck in 90 seconds.

3.1 kg

42 min

RTK GNSS

0 min

per tower

0x

optical zoom

0 min

in the air

0 s

case to take-off

03 · Corridor VTOL

Condor

300 km of corridor on a single charge.

Condor takes off vertically from a 3 m pad, then cruises on its wing along the corridor. It patrols after storms, watches for smoke in fire season and maps vegetation across whole regions.

16 kg

BVLOS

Solar wing

0 km

per charge

0 km/h

cruise speed

0 m

landing pad

0 min

smoke to de-energised

Trusted on 11,400 km of line

Out every night for the people who keep the lights on.

  • NORTHRIDGE POWER

  • KEEL VALLEY ELECTRIC

  • TAMARACK HYDRO

  • BRENNER GRID

  • SALTMARSH CO-OP

  • FJELLNETT NORD

  • LARCHMONT ENERGY

  • ØSTVIK KRAFT

  • “We had a clamp at 71 degrees on a line we’d flown by helicopter three weeks earlier. Heron found it on its second night.”

    Maren Aasen

    Asset engineer, Fjellnett Nord

  • “We had a clamp at 71 degrees on a line we’d flown by helicopter three weeks earlier. Heron found it on its second night.”

    Maren Aasen

    Asset engineer, Fjellnett Nord

  • “The first report was one page. Tower, photo, temperature, what to do. My crews read it on their phones in the truck.”

    Curtis Delorme

    Line superintendent, Tamarack Hydro

  • “The first report was one page. Tower, photo, temperature, what to do. My crews read it on their phones in the truck.”

    Curtis Delorme

    Line superintendent, Tamarack Hydro

  • “Condor saw smoke before anyone called it in. We de-energised the feeder in fourteen minutes.”

    Ana Ruiz

    Wildfire mitigation lead, Saltmarsh Co-op

  • “Condor saw smoke before anyone called it in. We de-energised the feeder in fourteen minutes.”

    Ana Ruiz

    Wildfire mitigation lead, Saltmarsh Co-op

  • “Ten minutes from the bucket and it was working. We stopped scheduling climbs for inspection entirely on that line.”

    Tom Haskett

    Journeyman lineworker, Keel Valley Electric

  • “Ten minutes from the bucket and it was working. We stopped scheduling climbs for inspection entirely on that line.”

    Tom Haskett

    Journeyman lineworker, Keel Valley Electric

  • “For the first time our vegetation budget follows measured clearance, not the calendar.”

    Priyanka Rao

    Vegetation manager, Northridge Power

  • “For the first time our vegetation budget follows measured clearance, not the calendar.”

    Priyanka Rao

    Vegetation manager, Northridge Power

The people behind the robots

Lineworkers, roboticists and pilots in Trondheim, Calgary and Denver. Most of us have stood under a line at 4 a.m. and wished it could tell us what was wrong.

Sana Iqbal

2022

Co-founder, CEO

Spent nine years in grid operations at Statnett before deciding the line should inspect itself.

Rohan Mehta

2022

Co-founder, CTO

Built climbing robots for wind turbines. Holds eleven patents and one very old soldering iron.

Lin Zhao

2023

Head of Perception

Led thermal imaging research at a satellite company; now teaches robots what 'too hot' means.

Kjetil Brandvold

2023

VP Hardware

Twenty years designing equipment that lives outdoors in the Arctic, from weather buoys to snow radar.

Hanna Lund

2024

Head of Flight Operations

Flew wildfire reconnaissance in British Columbia before running Condor's BVLOS programme.

Arjun Pillai

2024

Field Lead, North America

Journeyman lineworker for 22 years. If a robot is hard to hang, Dale says so first.

From the line

Plan a pilot

Put a robot on your worst span.

Tell us where it hurts. We’ll hang two Herons on it for 90 days and show you everything they find, span by span.

Insulators checked while you read
1
Conductor ridden since you arrived
0.00km
That’s the fleet on 412 spans right now.
Trondheim · 04:52

Head office

Brattørkaia 17, 7010 Trondheim, Norway

Field bases: Calgary · Denver

STRALEN

© 2026 Stralen AS · Org. 931 402 118

Made for the people who keep the lights on.

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