HV Electrical Commissioning Engineer – 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

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.