For owners, O&M teams & asset managers

Drone Wind Turbine Inspection

A rope team inspecting one turbine is most of a day and a full stop on generation. A drone doing the same survey is measured in tens of minutes, which is why blade inspection was the first part of wind O&M to move to the air.

  • Free to post
  • No commission on the job
  • Part 107 certified pilots
Wind turbines along a coastline, seen from the air
  • Nick Bowen
  • Destry  Clark
  • George Benes
  • Matthew Watson

117 inspection pilots ready to quoteAcross 37 states & regions

Nobody on a rope at hub height

Rope access on a blade is skilled, weather-dependent and inherently hazardous work. Moving the looking part of it to an aircraft leaves the ropes for repairs, which is where they earn their cost.

All four surfaces, consistently

Leading edge, trailing edge, pressure side and suction side, captured at the same standoff on every blade. Consistency is what lets this year's survey be compared with last year's rather than merely re-described.

Cheap enough to repeat

Erosion is progressive and the useful question is how fast. Once a survey costs a fraction of a rope inspection, tracking a defect through several surveys becomes a maintenance decision rather than a budget request.

Free to post

Posting and receiving quotes costs nothing, and SkyLog takes no commission and adds no markup. You pay the pilot you hire, at the price the two of you agree.

What this settles

  • Leading-edge erosion — the dominant degradation mode, and the one quietly costing annual energy production long before it is structural.
  • Surface cracks, lightning strike damage, receptor and down-conductor condition, delamination and debonding along trailing edges and bond lines.
  • Damaged or missing vortex generators and serrations, coating loss and exposed laminate.
  • Tower coating and welds, visible bolt flanges, the nacelle exterior, and foundation grouting at the base.

What it does not

  • See inside the blade. Shear web bonding, spar cap defects and internal cracking are invisible from outside.
  • Replace ultrasonic testing or other non-destructive methods where subsurface condition is the question.
  • Remove the rope team. On most sites they are coming anyway — the argument is that they arrive knowing what they are fixing.
  • Fly around your schedule. The turbine must be stopped and the rotor locked in position, and that needs SCADA access.

The flying is rarely the constraint. How many turbines your team can stop, position and release in a day is — plan the survey around that, and expect to be quoted per turbine on an assumption about repositioning speed.

How it works

Three steps, no account needed to start, and nothing to pay at any point in it.

  1. 1

    Describe the job

    The form opens with this page's answers already filled in — service, deliverable, site access. Add the location and anything specific to your site.

  2. 2

    Pilots quote it

    Every pilot whose service area and services match is notified. You get itemised quotes back with their credentials, kit and sample work attached.

  3. 3

    Compare and hire

    Pick on price, proximity or portfolio, and pay the pilot directly. SkyLog takes no cut and adds no markup to what you agree.

Inspection pilots with published profiles

Real published profiles. Open any one to see credentials, kit, service area and sample work before you post.

What the survey finds

Leading-edge erosion, which is the dominant degradation mode on most fleets and the one that quietly costs you annual energy production long before it becomes structural. Surface cracks, and whether they are cosmetic gelcoat crazing or something following the structure. Lightning strike damage and the condition of receptors and down conductors. Delamination and debonding, particularly along the trailing edge and at the bond lines. Damaged or missing vortex generators, serrations and other aerodynamic add-ons. Coating loss and exposed laminate. Plus the parts of the structure that are not the blade: tower coating and weld condition, bolt flanges where visible, the nacelle exterior, and the state of the foundation and grouting at the base.

Getting the turbine into position

This is the part that catches out anyone commissioning aerial blade inspection for the first time, and it is a scheduling problem rather than a flying one. The turbine has to be stopped, and the rotor has to be locked in a position that presents the blades to the camera — commonly a Y or an inverted-Y — with the blade pitched so each surface can be seen. Getting from one position to the next takes time and usually takes someone with SCADA access. The consequence is that the flying is rarely the constraint: the constraint is how many turbines your team can stop, position and release in a day, and how much lost generation you are prepared to accept. Plan the survey around that, and expect to be quoted per turbine with an assumption about how quickly repositioning happens.

Specifying it so the report is usable

State the number of turbines, the make and model, the hub height and rotor diameter, and the site. Say whether you need blades only or the full structure including tower and foundation. Ask for imagery organised by turbine, by blade and by surface, with a naming convention that survives being handed to somebody else — an unindexed folder of blade photographs is close to worthless at fleet scale. Ask for defects to be classified against a severity scale, and say which scale, because a five-category system and a pass-or-fail note are not interchangeable inputs to a maintenance plan. Ask about resolution in terms of the smallest defect that must be resolvable, since that sets standoff distance. And ask who interprets the imagery: capturing a blade well and reading blade damage are different competencies, and on a fleet the second one is where the money is.

What it does not do

It sees the surface. Internal structural condition — shear web bonding, spar cap defects, internal cracking — is not visible from outside, and finding it needs internal inspection, ultrasonic testing or other non-destructive methods. Aerial survey narrows down which blades warrant that attention; it does not substitute for it. It also does not repair anything, and on most sites the rope team is coming anyway. The economic argument is not that ropes disappear, it is that they arrive knowing what they are fixing.

Common questions

How much does a drone turbine inspection cost?

Quoted per turbine, and the rate falls sharply with the number in one mobilisation — a single turbine carries the whole travel cost, a site of thirty spreads it. Inspection quotes on SkyLog have ranged $100 to about $1,550 with a $300 median across 13 quotes spanning every inspection type, so treat that as background rather than a turbine rate. Post the site with the turbine count for real numbers.

Does the turbine have to be stopped?

Yes. Blades have to be stationary and positioned so each surface can be seen, which means a stop, a rotor lock and pitch changes between shots. Repositioning, not flying, is usually what sets how many turbines a day is realistic.

How long does one turbine take?

The flying is typically well under an hour per turbine. Adding stopping, positioning and releasing, plan on considerably more, and ask any pilot what turbines-per-day they are assuming in their quote.

Can it detect internal blade damage?

No. It is a surface inspection. Internal defects need internal or non-destructive inspection, and the aerial survey's role is telling you which blades justify that.

Is thermal useful on blades?

It can indicate subsurface delamination under the right conditions, but it is far more condition-dependent than visual inspection and is usually an addition rather than the main survey. Say if you want it, because it changes the payload and the timing.

Do pilots on SkyLog do turbine work?

Around 150 published pilots offer inspection work and any of them can quote your job. We are not going to claim a turbine speciality the profiles do not yet evidence — what we can say is that posting is free, the job reaches those pilots, and their quotes and profiles will tell you who has flown one.

Related drone services

Post your turbine inspection free

Give the turbine count, make and hub height, and how positioning will be handled. Pilots quote directly.

  • No commission, ever
  • Part 107 certified pilots
  • No obligation to hire

Prices and guidance on this page were last reviewed .