Services · Wind turbine O&M, inspection and installation
Your turbines producing more hours. We take care of the rest.
Maintenance, retrofits and preservation, task force crews, rope access, component inspection in port and factory, lifeline and service-lift certification, drone blade inspection, installation and site supervision. Greenwork Technology was founded in 2015, and its team has been installing wind turbines since 2010: more than 50 wind farms and factories in 13 countries on 4 continents, across 10+ turbine platforms, with GWO-trained technicians.
How we work
How we walk into a wind farm we do not know yet
Every site has its own technology, age, access and history. The work changes on each one; the method does not.
Survey
We walk the site turbine by turbine: access roads and crane pads, external condition of tower and blades, alarm history, maintenance already carried out and the state of the critical components.
Diagnosis
Findings are ranked by risk: what compromises safety, what is costing production, what can wait for the next shutdown and what should be grouped so nobody climbs the same turbine twice.
Work plan
Scope turbine by turbine, means of access — ropes, crane, platform, drone —, spare parts, crew and weather window. On blades the window rules: wind to hang the ropes and temperature for the resin to cure.
Execution
To the OEM procedure, with health-and-safety and contractor documentation cleared before we enter, calibrated tools and a team leader on site. Every turbine is closed with its own work sheet.
Handover and data
Report per turbine with before-and-after photographs, punch list of whatever is still open, and the data kept so the next campaign can be compared with this one instead of starting from scratch.
01 · Maintenance · Preventive, predictive and corrective
Maintenance, retrofits and preservation with the availability target written into the contract
A preventive programme that merely follows the manual does not prevent downtime. We combine the OEM's scheduled service with predictive techniques and our own trend tracking so that gearbox, generator and auxiliary issues are found before they stop the turbine, and we back it with an on-call crew for contracted farms.
- Preventive service to the OEM calendar, with its checklists and a digital record of every task.
- Predictive: thermography, borescope inspection and oil analysis, with trend reports and early warnings per component.
- Torque checks on blade, hub, tower and foundation bolting with calibrated tools, and generator alignment (Llanos del Viento, Polche Sur).
- Retrofits: TN retrofits and anti-static retrofits across the fleet, turbine by turbine (Atacama, Mesamávida, Alena, Los Olmos, Polche Sur, Duna Huambos, Agua Clara and Guanillo).
- Turbine preservation during storage or before commissioning, and turbine cabling (Atacama, Haru Oni, Alena, Llanos del Viento).
- Corrective: 24/7 on-call crew for contracted farms, from electromechanical faults to yaw ring replacement (La Bouleste, Gamesa G5X, 2021).
- Reporting: intervention reports with photographs and documentary traceability in your client portal, with the target availability agreed in the contract.
How it is contracted: site survey and condition report with priorities, wind farm by wind farm. Optional 3-month pilot before scaling up.
Team with wind experience since 2010 · 50+ wind farms and factories
02 · Corrective and major corrective · 24/7 for contracted farms
When a turbine stops, every hour counts
24/7 on-call crew for wind farms under contract
A fast, reliable corrective response is the difference between hours and weeks of downtime. We diagnose, repair and return the turbine to production with certified parts and full documentary traceability. When the fault involves a main component, we plan the exchange with a crane or, where the platform allows it, with up-tower and craneless systems, coordinating lifting means, access and the outage window.
On-call and corrective
Breakdown line and on-call crew with a fully equipped vehicle for contracted farms, with response times agreed in the contract. On international projects we agree the response time in the proposal.
Electromechanical and yaw
Converters, pitch, yaw, hydraulics, sensors and cabling. Yaw ring replacement carried out on Gamesa G5X (La Bouleste, 2021) and generator alignment on SGRE SG145 (Llanos del Viento) and at Polche Sur.
Main component exchange
Gearbox, generator, blade and main bearing exchange planned per intervention: component, lifting method (crane or up-tower) and lead time, with root cause analysis of the failure.
Certified parts and records
Certified spares, full documentary traceability and a report on every intervention in your client portal.
How it is contracted: for a breakdown, call and we go. For a major corrective, diagnosis and a tailored proposal per intervention: component, lifting method and lead time.
+34 605 857 960 · on-call crew for contracted farms
03 · Task force · Crew reinforcement
Task force: GWO-trained technicians ready to reinforce your team within days
A preventive campaign running late, a punch list to close before handover, a fleet-wide retrofit or availability slipping without enough hands. We put a complete crew to work inside your organisation, your ISP's or the OEM's, following your procedures and your schedule, as we have done at Cabo Leones (Chile) and Duna Huambos (Peru).
- GWO-trained crews with a team leader, mobilised within days in Spain, Chile and on international projects.
- They arrive equipped: vehicles, calibrated tools with certificates, PPE and up-to-date HSE and contractor-coordination documentation.
- 10+ platforms: Nordex Delta 4000 (N149, N163), Siemens Gamesa (SG132, SG145, G132, G145, G97, G114), Goldwind (GW87, GW136), Vestas (V90 to V136), Senvion/Repower MM92, NEG Micon, Acciona AW3000, Envision EN110 and Alstom ECO 80.
- They integrate into the owner's, ISP's or OEM's organisation and report to your site manager.
- Safety: integrated management system for quality, safety and the environment, GWO training and full PPE on every task.
How it is contracted: tell us the scope, technology, number of turbines and dates; we propose crew, duration and deliverables in a tailored proposal per campaign.
Complete crew with team leader, vehicles and tools
Preventive campaigns
Recover the service calendar before the backlog turns into corrective work.
Punch list and handover
Extra qualified hands to close the punch list and hand over turbines on time (Atacama, Renaico 2, Llanos del Viento, Cabo Leones).
Fleet-wide retrofits
TN retrofits and anti-static retrofits across the whole fleet, turbine by turbine.
Lifeline campaigns
Certification of lifelines, anchor points and service lifts across a whole site in a single campaign.
Availability recovery
An intensive reinforcement to bring a fleet back to the availability agreed in your contract.
International projects
Crews deployed to construction sites and O&M abroad, as we have done in 13 countries on 4 continents.
04 · Rope access · Cleaning, blade repair, fibre and painting
A full IRATA crew: repair, non-destructive testing and cleaning at height without a crane
A leading-edge defect, a crack in a blade, a stained tower or a hub that needs fibre work do not justify mobilising a crane. Our qualified rope-access technicians, GWO-trained, go up on ropes, do the job and come down: fewer hours of downtime and no heavy machinery on your site.
- Blade repair in general: leading-edge protection (LEP), cracks, laminate, lightning receptors (LPS) and drainage, documented by category 1-5 (Llanos del Viento, Cabo Leones, La Estrella).
- Nacelle and hub fibre repair, including hub fibre lowering with rope-suspended work (San Pedro, Gamesa G97).
- Vertical cleaning of towers, blades and tower sections, on the ground or on ropes (Atacama, Renaico 2, Cabo Leones, Los Olmos, and tower cleaning across the Dominican Republic: Agua Clara, Guanillo, Larimar, Juancho, Los Cocos, Quilvio Cabrera, Guzmancitos).
- Painting and logo installation on the tower at height (Atacama).
- A full crew of IRATA technicians with GWO training: every rope team works under level-3 supervision, with a written rescue plan and equipment carrying its own inspection record. Blade structural repairs are signed off by technicians qualified in composite materials.
- Non-destructive testing on the blade: ultrasonic testing and tap testing to map delaminations and bond-line disbonds before opening up the repair, and to verify it afterwards.
- Photographic record of every repair for your maintenance history, ready to compare with the next drone inspection.
With a crane or platform
- Hire, transport and set-up of heavy machinery
- Access roads and hardstandings to prepare
- More hours of downtime per turbine
With Greenwork rope access
- Crew mobilised within days, no heavy machinery
- Fewer hours of downtime per turbine
- Blade, tower, nacelle and hub in the same campaign
How it is contracted: send us the inspection report or photographs of the damage (or we inspect it by drone) and we propose the repair per turbine or per campaign.
our own technicians · full PPE · integrated safety, quality and environmental policy
05 · Inspections · Port, factory and on site
Independent eyes on your components before they reach the site, and once they are up
Component inspection in factory and port, prototype follow-up, blade inspection by drone or conventional photography, and inspection of the emergency and rescue equipment your technicians rely on. Independent reports that you can put in front of the OEM.
Components in port and factory
Inspection of blades, tower sections and nacelles at the factory and on arrival at port, with a report on every unit (Nordex Delta 4000 at the Nordex and Martifer factories and at the ports of Santander and Lumbier, 2020).
Prototype quality control
Quality control and follow-up of new platforms during manufacturing and first installation: Gamesa G145 at the Tianjin factory (China, 2019) and G4X at Cabo Leones (Chile).
Blade inspection
By autonomous drone or with conventional photographic equipment, with damage classified by type, severity and size (Agua Clara and Guanillo, Dominican Republic; Sainte-Rose, Guadeloupe).
Emergency and rescue equipment
Inspection of descent and rescue kits and emergency equipment, plus certification of lifelines, anchor points and service lifts.
Thermography and borescope
Internal inspection of gearboxes and bearings with a borescope; thermography of cabinets, generator and connections as part of the predictive programme.
Final inspections
Final inspections and client punch lists before acceptance (Pampa Energía II, Argentina; Altamira, Campos Azules, Vientos de la Perla and Vientos de Miramar, Costa Rica).
Ageing fleets
Condition inspection of turbines beyond their design life: in Spain alone, 9.77 GW of wind capacity is already more than 20 years old (AEE).
How it is contracted: tailored proposal per campaign after reviewing the number of units, location and the OEM's inspection plan.
06 · Lifelines, anchor points and service lifts
Certified lifelines and service lifts, so every climb is a safe one
A lifeline that has not been certified, an anchor point without a record or a service lift without its periodic check stops your technicians before they start. We certify lifelines and anchor points, install and certify tower service lifts and inspect descent and rescue equipment, on new sites and in operating fleets.
- Lifeline and anchor point certification with a record per turbine (Haru Oni, Mesamávida, Alena, Llanos del Viento, Tchama, Cabo Leones, Calama, La Estrella, Los Olmos, Duna Huambos, Agua Clara and Guanillo).
- Service lift installation and certification (Haru Oni, Tchama, Llanos del Viento, Cabo Leones).
- Inspection of descent and rescue equipment and emergency kits (Cabo Leones, Agua Clara and Guanillo).
- Site-wide campaigns combined with other work at height, with certificates ready for your HSE file and the OEM's handover.
How it is contracted: tailored proposal per site based on the number of turbines, the lift model and the certification deadline. Also as part of a maintenance contract.
Lifelines · anchor points · service lifts · rescue kits
07 · Drone inspection · Autonomous platform for towers and blades
All three blades covered in under 45 minutes of downtime, with results you can reproduce
Our autonomous drone platform flies the turbine on its own: LiDAR scanner, high-definition imagery and automatic upload to the cloud. It covers 100 % of each blade in under 45 minutes per turbine, and every campaign is flown the same way, so the results are comparable year on year. We are a drone operator and an official Yuneec distributor.
- 100 % blade coverage with HD imagery and LiDAR-guided flight, plus tower inspection.
- AI-assisted damage annotation with a confidence index, reviewed by technicians with blade repair experience.
- Report within a week, with damage classified by type, severity and size.
- Web portal with dashboards per fleet, wind farm and turbine, CSV and Excel export, and data retained for future campaigns.
- Prefer to bring it in-house? We sell Yuneec platforms and train your pilots.
How it is contracted: tell us the number of turbines, the model and the location and we will scope the campaign.
Planning
Coordination with the wind farm, definition of scope and the permits that apply.
Autonomous flight
Turbine stopped and locked. The drone flies each blade at a constant distance with LiDAR guidance; images upload automatically to the cloud.
Annotation
AI-assisted damage detection with a confidence index, checked by technicians who repair blades, not only by software.
Report within a week
Per turbine and per blade, with damage classified by type, severity and size, explorable in the web portal and exportable to CSV or Excel.
08 · Installation · Assembly, cabling and commissioning
Installation and commissioning on any terrain
Turbine assembly, finishing works, tower cabling, service lift installation and certification and commissioning. Our team has been installing wind turbines since 2010, from the Moroccan desert to the Atacama, the Peruvian coast, Uruguay and Mexico, and in 2022-2023 it worked on the commissioning of the Haru Oni green-hydrogen plant in Chile.
- Turbine assembly and finishing works on Nordex N149 (Mesamávida, Los Olmos), SGRE G145 (Tchama), Vestas V100/V110 (Uruguay, 2015) and earlier platforms since 2010.
- Cabling of tower and nacelle (Llanos del Viento, Tchama, Cabo Leones, Los Olmos), with torque checks on bolted joints recorded.
- Service lift installation and certification and lifeline certification as part of the erection scope.
- Commissioning and handover documentation, including the turbine that feeds the Haru Oni green-hydrogen plant (SGRE SG132, Chile, 2022-2023).
How it is contracted: tailored proposal per project after reviewing the schedule, technology, site and lifting means. Also as a task force integrated into the OEM's or the developer's team.
09 · Supervision and audits · Site management
Verify that what is invoiced is what gets done
Site managers and quality inspectors who represent your interests on site during construction, warranty and O&M: quality, installation, civil works, HSE, document control and construction contracts. Punch lists and turbine handover with records you can claim against.
- Site manager and quality inspector on SGRE SG145/G145 sites: Punta Lomitas (Peru), Tchama, Calama and La Estrella (Chile).
- Installation supervision on Acciona AW3000 (La Castellana), Vestas V136 (Pampa Energía III) and Envision EN110 (García del Río and Vientos del Secano, cluster B), Argentina.
- Quality supervision and inspections in Costa Rica, the Dominican Republic and Guadeloupe (Gamesa G9X and G114) and at Duna Huambos (Peru).
- HSE, document control and construction contracts, with contractor coordination (CAE) and audit reports.
- Punch list and turbine handover, final inspections and client punch lists before acceptance.
How it is contracted: as a standalone service or within a maintenance contract, with a tailored proposal according to the number of turbines and the level of supervision you need.
Quality · installation · HSE · document control
10 · End of warranty · Punch list and turbine handover
End of warranty: claim before it is too late
The last months of the OEM warranty are your last chance to have defects paid for by whoever is responsible. We inspect, document and support your position with evidence: blades, drivetrain, electrical, hydraulics, structure and documentation, in a report you can put in front of the OEM. The same approach we apply to punch lists and turbine handover on new sites.
End-of-warranty inspection
Full inspection in the last months of warranty: blades (by drone or on ropes), gearbox and generator, electrical, hydraulics and structure. Defect list and documented claim to the OEM.
Punch list and handover
Punch list closure and turbine handover on new sites (Atacama, Renaico 2, Llanos del Viento, Alena, Cabo Leones) and client punch lists (Costa Rica).
Technical due diligence
Independent condition assessment of a fleet before a transaction or a new O&M contract: pending work, risks and the state of the critical components.
Free download
End-of-warranty audit checklist
The points we review before a wind farm's warranty closes: blades, gearbox, generator, electrical, hydraulics, structure and documentation. Use it to prepare your claim to the OEM. The document is in Spanish.
In Spain, 9.77 GW of wind capacity is already more than 20 years old (AEE): every year there are more fleets to assess.
How to hire us
Three ways of working with you, always with a tailored proposal
We do not publish rates: a maintenance contract, a task force campaign or a repair at height depends on the technology, the age of the fleet, access and what we find on the site visit. What you always receive is a tailored proposal with scope, crew and deliverables.
One-off intervention
Breakdowns, rope access, drone inspection, end-of-warranty inspection, lifeline and lift certification, borescope and thermography.
Proposal per intervention
- Diagnosis and scope defined before we start
- Report with photographs and parts traceability
- Initial proposal within 24 working hours
The simplest way to get to know us before a contract.
Maintenance contract
Annual or multi-year contract per wind farm: preventive, predictive and corrective, with retrofits and preservation as required.
Proposal per wind farm
- Target availability agreed in the contract
- 24/7 on-call crew for contracted farms
- Client portal with reports and documentation
- Trend reports and action plan
- Optional 3-month pilot programme
Campaign or project
Task force, scheduled outages, fleet-wide retrofits, punch list and handover, installation and commissioning, site management and supervision.
Proposal per campaign
- Crew, duration and deliverables defined
- Integration into your organisation, the ISP's or the OEM's
- Spain, Chile and international projects
Mobilisation within days.
Frequently asked questions