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OFFSHORE WIND CABLE JOINTER

Connecting Scotland’s offshore wind farms to the grid — safely, precisely and reliably

OVERVIEW
Offshore Wind Cable Jointers install, create joints, terminate, test and repair high-voltage subsea and onshore cables that connect offshore wind turbines to substations and the National Grid. Working offshore and on landfall sites across Scotland, they play a critical role in ensuring electricity generated at sea is transmitted safely and efficiently to homes and businesses.
This is a highly skilled, technical trade requiring precision, safety awareness, and specialist training in high-voltage systems.

More details

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  • Install and joint high-voltage (HV) and extra-high-voltage (EHV) subsea and export cables

  • Prepare and terminate cables at offshore substations and onshore grid connections

  • Conduct insulation and high-voltage testing

  • Follow strict safety and quality procedures

  • Work from offshore vessels or platforms during cable installation campaigns

  • Support fault finding and cable repairs

  • Complete detailed technical documentation

  • Ensure compliance with industry standards and regulation

Location:

  • Offshore wind farms in Scottish waters
  • Subsea cable installation vessels
  • Onshore substations and landfall sites
  • Fabrication yards and cable storage facilities

·         Work Pattern:

  • Offshore rotations (e.g., 2–3 weeks offshore, 2–3 weeks off)
  • Long shifts during installation campaigns
  • Weather-dependent offshore schedules

Conditions:

  • Safety-critical environments
  • Working at height and in confined spaces
  • Exposure to offshore weather conditions
  • Precision work under controlled clean conditions for jointing

Team Structure:

You will work alongside:

  • Electrical engineers
  • Commissioning engineers
  • Offshore installation managers
  • Marine crews
  • Health & Safety personnel

Essential Skills

  • High-voltage cable jointing expertise
  • Strong electrical knowledge
  • Precision and attention to detail
  • Ability to follow strict technical procedures
  • Safety awareness in high-risk environments
  • Teamwork and communication skills

Useful Skills

  • Subsea cable experience
  • Fault-finding and diagnostic skills
  • Offshore working experience
  • Knowledge of grid connection processes
  • Mechanical handling and rigging awareness

·         Apprenticeship Route

  • Electrical apprenticeship (e.g., power distribution or utilities)
  • Progression into HV cable jointing specialist roles

·         Industry Transition Route

  • Utilities sector (electricity distribution/transmission)
  • Oil & gas electrical roles
  • Marine electrical engineering

·         Further Training Route:

  • High-voltage cable jointing certification
  • Offshore safety qualifications

Typically Required

  • SVQ Level 3 in Electrical Installation or equivalent
  • Recognised apprenticeship in electrical engineering
  • High-Voltage Authorisation (as required by employer)

Offshore & Safety Certifications

  • GWO Basic Safety Training
  • Offshore medical
  • Working at Height
  • Manual Handling
  • First Aid

Desirable

  • EHV jointing certification (132kV+)
  • Subsea cable jointing training
  • Confined Space training

Dominic Apprentice Jointer, SSEN (1)

Dominic Casemore, Apprentice Jointer for SSE Networks

Relevant Training Courses

  • Regional Colleges offering electrical apprenticeships - find out more here
  • GWO Basic Safety Training – find out more here

The video on the right features Apprentice Jointer, Dominic Casemore, talking about his role and typical workday with SSE Networks. While Dominic's work is at the onshore end of cable systems his role is the same except for the offshore element that comes with working in the offshore wind industry.
Since the start of 2026 Dominic is now a Senior Technician with Aureos Energy. 

Subsea Cable Install

Subsea Cable Installation or Pull-in (SPIE animation)

Salary and progression

Salary Range (Scotland)

  • Onshore Cable Jointer - £40,000-£55,000
    Offshore Cable Jointer - £55,000-£80,000+ (depending on rotation and experience)

Career Progression

  • Senior Cable Jointer
  • Cable Installation Supervisor
  • Offshore Electrical Supervisor
  • Commissioning Engineer
  • Offshore Construction Manager

The animation on the left shows how the subsea array cable is pulled onto the offshore wind substructure, in this case a monopile foundation, to position it for connection to the turbine. This shows the type of offshore vessel that the jointer would be working from and the 'work to work' gantry access system used to get onto the monopile to work on the 66kv array cable termination.