// IN SHORT

**In short:** Every wind technician needs **GWO Basic Safety Training (BST)**: four modules onshore, plus Sea Survival offshore, refreshed every 24 months. Most also need **GWO Basic Technical Training (BTT)**, especially the Mechanical, Electrical, Hydraulic and Bolt Tightening modules. After that, it depends on your job and ambitions: **ART and Enhanced First Aid** for leads and supervisors, **electrical authorisations** and **cable jointing** for electrical work, **IRATA rope access and GWO Blade Repair** for blade work, **lifting certificates** like Slinger Signaller, and **HUET** if you fly to offshore sites by helicopter.

Certificates in wind aren't just pieces of paper. They're official proof that you know how to work safely, and on most European sites they're checked before you receive your employment contract.

1. The Basic Entry Tickets (Everyone)

🛡️ GWO BST: Basic Safety Training

This is the absolute baseline. You can't work on a wind farm without it. It has four modules for onshore work, plus a fifth for offshore:

  • Working at Heights: using your harness, fall protection and rescue equipment
  • Fire Awareness: preventing fires, and putting out small ones safely
  • First Aid: helping an injured colleague until professional help arrives
  • Manual Handling: lifting and moving loads without injuring yourself
  • Sea Survival (offshore only): safe transfer between vessel and turbine, and survival at sea

Validity: BST certificates are valid for 24 months. The best time to take your refresher is within the two months before your certificate expires. That way the new 24 months are added to your current expiry date, so you don't lose any time.

🔧 GWO BTT: Basic Technical Training

BTT teaches you the basics of safe technical work in a turbine: how to use hand tools, torque wrenches (manual and hydraulic) and how to behave safely around mechanical, electrical and hydraulic systems.

The most wanted modules are:

  • Mechanical (BTT-M)
  • Electrical (BTT-E)
  • Hydraulic (BTT-H)
  • Bolt Tightening (BTT-B)

There are also Installation modules (mechanical and electrical). Employers rarely ask for them today, so if you're paying yourself, you can skip them for now. BTT certificates have no expiry date.

👉 GWO Training: What It Is and Why It Matters 👉 Prices: GWO Training Prices in Europe (BST & BTT) and How to Choose a Centre

2. Advanced Safety (Leads and Supervisors)

These courses are mostly for top team leads, ground team leads, lead technicians and supervisors, but anyone can take them:

  • GWO ART (Advanced Rescue Training): rescuing an injured colleague from the hub, spinner, inside the blade, nacelle, tower and basement.
  • GWO EFA (Enhanced First Aid): keeping an injured person stable for longer at remote sites, while you wait for professional help.

Both are very hands-on and genuinely interesting. If you want to grow faster as a wind tech and have the budget, they're worth doing at your own expense before an employer asks.

3. Special Certificates for Specific Jobs

If you want to specialise and earn more, these are the main paths.

⚡ Electrical training and authorisations

Before you work on anything electrical in a turbine, you need the right training, so you don't get hurt on your first day. Requirements differ by country and employer. Common examples:

  • Germany: EuP (Elektrotechnisch unterwiesene Person, electrically instructed person) for basic electrical tasks under supervision, and EFKffT (Elektrofachkraft für festgelegte Tätigkeiten, electrician for defined tasks) for more independent work.
  • UK: qualified electricians often hold City & Guilds 2391 (inspection and testing).
  • GWO Control of Hazardous Energy (CoHE): a common base for working safely around electrical and stored energy, before your employer's own authorisation.

👉 OSHA & Electrical Certifications Explained 👉 Electrical Safety: Lockout/Tagout (LOTO) & Arc Flash Protection

🔌 High voltage and cable jointing

In 2026, cable jointers are among the most wanted technicians. Wind farms need a lot of inter-array cable work: pulling, connecting and disconnecting cables, terminations and testing. High-voltage technicians who can do this safely are in high demand and well paid.

But demand changes. What's hot today may not be next year, so watch the market. Our Workforce Radar shows which skills job ads are asking for right now.

🧗 Rope access and blade repair

Rope access technicians are always in demand, because blades need inspecting and repairing for as long as turbines keep turning.

Blade inspections are becoming more automated: crawler robots film the inside of blades, and drones inspect the outside. But robots still can't press a finger on a suspicious spot to check whether the laminate is sound. Annual inspections may move to drones, but major inspections and repairs still need people on ropes.

  • IRATA rope access: Level 1 is the entry point, Level 2 adds more complex work, and Level 3 can supervise rope access work on site.
  • GWO Blade Repair: combined with IRATA, it gives you a strong start in blade work.

🏗️ Lifting certificates

Lifting is a part of almost every wind job.

  • GWO Slinger Signaller (SLS): the standard wind qualification for rigging loads and signalling to crane operators. It has no expiry date, but some employers now ask you to repeat it every year, usually at their expense.
  • OPITO Banksman & Slinger and OPITO Rigger: oil and gas qualifications, delivered in stages, and very well respected in wind too.
  • Country-specific cards: for example in the UK, a CPCS or NPORS card for slinger/signaller work.

👉 Course details and validity: GWO Certificates Quick Guide

🚁 HUET and BOSIET (helicopter travel)

HUET (Helicopter Underwater Escape Training) teaches you how to get out of a helicopter that has landed in the water. BOSIET is the full OPITO offshore safety induction, which includes HUET.

You only need these if you'll change crew by helicopter. If you work from CTVs or change crew in port, you usually won't. But if you're actively looking for offshore work, as a freelancer or at entry level, HUET with CA-EBS (compressed air emergency breathing system) is a good certificate to have ready.

👉 Coming from oil and gas or the sea? Coming to Wind from Marine, Oil & Gas, Mining or the Military

4. After GWO: Manufacturer and Equipment Training

Once you're working, your employer and the turbine manufacturer will add their own training: turbine-specific courses and levels (like Vestas Level D or Siemens L4), plus equipment courses for service lifts and power ascenders.

👉 OEM and Equipment Training: The Certificates After GWO

💡 Pro Tip: Never Let a Key Certificate Expire

If your GWO BST expires on Tuesday, you won't be allowed to climb a turbine on Wednesday. Keep a digital folder on your phone with all your certificates and their dates, and book refreshers well in advance. Remember: the two months before expiry are the best time to refresh.

👉 Which certificates employers ask for, by job: The GWO Framework for Entry-Level Wind Technicians 👉 Put them on your CV properly: CV Builder 📬 Browse current wind jobs and subscribe to job alerts