Electrical Supervisor

Mint Selection | B Corp; Exeter; On-site; GBP 55,000 - 75,000; Full time

Job summary

Mint Selection | B Corp is recruiting an experienced Substation Electrical Supervisor for a major UK energy infrastructure project based in Exeter.

You will supervise the 400kV substation package, coordinate HV switchgear, protection panels and LV cabling, and lead QA/QC, safety and commissioning through construction.

This long‑term contract calls for a hands‑on leader with NGET/NSI awareness and a track record of delivering high‑voltage substations to time and budget.

Qualifications

• Minimum 5 years' relevant substation experience.
• Experience with HV switchgear installation and protection panels.
• Experience on transmission‑level substations, ideally 400kV.
• Strong leadership, communication and organisational skills.
• Experience with RAMS and permit‑to‑work systems.

Responsibilities

• Supervise electrical installation activities across the 400kV substation package, ensuring works are delivered safely and to programme.
• Oversee installation of HV switchgear, transformers, protection & control panels, LV systems and cabling.
• Supervise electrical subcontractors and installation teams, providing technical support and resolving site issues.
• Ensure installations comply with drawings, specs, manufacturer requirements and transmission standards.
• Oversee QA/QC activities including inspections, ITPs, snagging and NCR management.
• Review installation documentation, records, test packs and quality documentation.
• Monitor progress, identify risks or design clashes and implement corrective actions.
• Coordinate with mechanical, civil and commissioning teams to align interfaces and energisation programme.

Skills

Electrical supervision

Substation experience

HV installation

Leadership

Communication

RAMS & safe work

NGET/NSI knowledge

Project coordination

Tools

GIS

Job description

Mint Selection are partnered with a leading organisation within the energy sector to recruit an experienced Substation Electrical Supervisor for a major project based in Exeter.

The position will be focused specifically on the 400kV substation package, taking responsibility for supervising electrical installation activities across the high-voltage substation through construction, installation, testing and commissioning.

This is an excellent opportunity for an experienced transmission substation professional to join a major UK energy infrastructure project on a long-term contract.

Key Responsibilities

• Supervise and coordinate electrical installation activities across the 400kV substation package, ensuring works are delivered safely, efficiently and in accordance with the project programme.
• Oversee the installation of HV switchgear, transformers, Protection & Control panels, LV systems, control cabling, power cabling, containment, earthing and associated substation electrical infrastructure.
• Supervise electrical subcontractors and installation teams, providing technical support and resolving site-based installation issues.
• Ensure all electrical installations are completed in accordance with approved drawings, specifications, manufacturer requirements and relevant transmission standards.
• Oversee the installation, termination and inspection of Protection & Control panels and associated LV control cabling.
• Take ownership of electrical QA/QC activities including inspections, ITP compliance, quality walk‑downs, punch listing, red‑line mark‑ups, snagging and management of non‑conformances through to close‑out.
• Review installation documentation, inspection records, test packs, cable schedules, drawings and associated quality documentation.
• Monitor workmanship and construction progress, identifying risks, delays, design clashes or quality concerns and implementing corrective actions where required.
• Coordinate with mechanical, civil and commissioning teams to manage interfaces and ensure the substation is delivered in line with the overall construction and energisation programme.
• Conduct toolbox talks, daily briefings and safety inspections while promoting a strong health, safety, environmental and quality culture across site.
• Ensure all activities are undertaken in accordance with RAMS, permit‑to‑work systems, project HSEQ procedures and applicable National Grid requirements.
• Maintain accurate site records, progress reports, inspection documentation and quality records throughout construction.
• Support the Construction/Site Manager with short‑term planning, programme updates, contractor coordination meetings and progress reporting.
• Assist with testing, commissioning and energisation activities, ensuring installations are inspected, completed and handed over to the required standard.

Experience Required

• Proven experience as an Electrical Supervisor, Substation Supervisor or Electrical Site Supervisor on high‑voltage substation projects.
• Minimum 5 years' relevant substation experience, with 10+ years highly desirable.
• Strong experience working on transmission‑level substations, ideally at 400kV.
• Previous experience working on National Grid (NGET) and/or SPEN sites is highly desirable.
• Strong hands‑on background installing HV switchgear, Protection & Control panels and associated LV cabling.
• Experience with GIS and/or AIS substation equipment.
• Previous experience working with GE / GE Vernova equipment would be highly advantageous.
• Strong understanding of substation cabling, containment, earthing, terminations and electrical installation practices.
• Good QA/QC knowledge including ITPs, inspections, NCR management, test documentation, snagging and handover.
• Strong understanding of RAMS, permit‑to‑work systems and safe systems of work within high‑voltage environments.
• NGET Competent Person / NSI 6 & NSI 8 certification is desirable but not essential.
• Excellent leadership, communication and organisational skills with the ability to manage subcontractors and installation teams effectively.