Electrical Commissioning Engineer - HV / Renewables / BESS

JAM Recruitment Ltd; Wales; On-site; GBP 88,000 - 115,000; Full time

Job summary

JAM Recruitment Ltd is partnering with a leading HV electrical contractor to source an Electrical Commissioning Engineer for renewables, BESS and grid infrastructure across the UK. The role focuses on commissioning high voltage systems and protection schemes for utility-scale projects.

The ideal candidate will have proven experience across HV substations, 11kV–132kV testing, and energisation, with a track record coordinating with DNOs and principal contractors.

Qualifications

• HV substations experience in renewables/grid
• Experience testing 11kV–132kV systems
• Practical knowledge of HV switchgear, transformers and protection relays
• Primary and secondary injection testing
• Familiarity with DNO and transmission networks commissioning
• HV energisation processes and safety documentation
• Ability to read SLDs, schematics and protection diagrams
• Experience coordinating with multiple contractors

Responsibilities

• Undertake electrical testing and commissioning across HV substations and associated grid infrastructure.
• Commission 11kV, 33kV and 132kV systems, including switchgear and transformers.
• Carry out primary and secondary injection testing of protection systems.
• Perform functional testing of protection relays, control panels and interlocks.
• Support commissioning of HV cable networks and terminations.
• Undertake insulation resistance and continuity testing.
• Commission SCADA, protection and control systems for renewables projects.
• Support integration of BESS infrastructure (transformers, PCS, MV distribution).
• Coordinate testing and energisation with DNOs, transmission operators and contractors.
• Review SLDs, protection schematics and commissioning procedures.
• Investigate and resolve commissioning defects.
• Prepare commissioning test records, reports and handover docs.
• Ensure compliance with electrical safety procedures and standards.

Skills

HV substation commissioning

11kV-132kV testing

HV switchgear & transformers

Primary/Secondary injection testing

DNO / transmission commissioning

HV energisation & safety

Reading SLDs/protection schematics

Coordination with contractors

Education

Electrical Engineering degree or HNC/HND

ECS / CSCS card

Electrical safety qualifications

HV Authorised Person status desirable

SMSTS or SSSTS desirable

Job description

Electrical Commissioning Engineer - HV / Renewables / BESS

Southwest Scotland, Aberdeenshire & South Wales

9 Months

Outside IR35

£550 per day

Site-Based

THE OPPORTUNITY

JAM Recruitment is supporting an established high-voltage electrical engineering contractor delivering renewable energy, battery storage and grid connection infrastructure across the UK.

We are looking to connect with experienced Electrical Commissioning Engineers with strong backgrounds in HV substations, protection and control systems, electrical testing and energisation.

The work would involve commissioning electrical infrastructure across utility-scale wind, solar and BESS developments, including 33kV and 132kV substations, transformers, switchgear and associated grid connection equipment.

RESPONSIBILITIES

• Undertake electrical testing and commissioning across HV substations and associated grid infrastructure.
• Commission 11kV, 33kV and 132kV systems, including switchgear, transformers and associated electrical equipment.
• Carry out primary and secondary injection testing of protection systems.
• Perform functional testing of protection relays, control panels and electrical interlocking systems.
• Support commissioning of HV cable networks, terminations and associated infrastructure.
• Undertake insulation resistance, continuity and other relevant electrical testing.
• Commission SCADA, protection and control systems associated with renewable energy developments.
• Support electrical integration of BESS infrastructure, including transformers, PCS equipment and MV distribution systems.
• Coordinate testing and energisation activities with DNOs, transmission operators and principal contractors.
• Review SLDs, protection schematics, commissioning procedures and technical drawings.
• Investigate and resolve commissioning defects.
• Prepare commissioning test records, reports and handover documentation.
• Ensure compliance with electrical safety procedures and relevant industry standards.

SKILLS / REQUIREMENTS

• Proven electrical commissioning experience across HV substations, renewable energy or grid infrastructure.
• Experience testing and commissioning electrical systems between 11kV and 132kV.
• Strong understanding of HV switchgear, transformers, protection relays and associated control systems.
• Experience with primary and secondary injection testing.
• Knowledge of DNO and transmission network commissioning requirements.
• Familiarity with HV energisation processes and electrical safety documentation.
• Ability to interpret electrical drawings, SLDs and protection schematics.
• Experience coordinating commissioning activities with multiple contractors.

CERTIFICATIONS

• HNC/HND or degree in Electrical Engineering, or equivalent experience.
• ECS / CSCS card.
• Relevant electrical safety qualifications.
• HV Authorised Person status desirable.
• SMSTS or SSSTS desirable.

DESIRABLE

• Experience commissioning utility-scale wind, solar or BESS developments.
• Experience with 132kV substations and grid connections.
• Knowledge of IEC 61850 and SCADA integration.
• Experience commissioning protection and control systems.
• Previous involvement in DNO or National Grid energisation activities