Renewable energy jobs · High Voltage

High Voltage Jobs in Renewable Energy

High voltage (HV) engineering covers the design, commissioning, and maintenance of electrical systems above 1 kV - typically 33 kV to 525 kV - that move power from renewable generation sites to the grid via cables, substations, transformers, and HVDC converter stations. In renewable energy, HV roles cluster around offshore wind export cables, solar and battery plant interconnections, and the long-distance transmission build-out connecting clean generation to demand centres. The UK wind industry alone employed 55,000 people in 2025 and forecasts a 37,000-worker shortfall by 2030, with high-voltage cable specialists explicitly flagged as a critical role.

What HV work in renewable energy actually involves

The work splits into AC and DC streams. AC roles dominate substation design at 110-400 kV: protection relays, gas-insulated switchgear, Substation Engineering, and Grid Connection of wind farms and PV plants. DC roles cluster around HVDC converter stations, 525 kV extruded XLPE cable jointing, and the multi-terminal grids being built for offshore wind. Both streams converge on Power Electronics for the converters, inverters, and STATCOMs that interface variable renewables with the synchronous grid.

Who's hiring

National Grid committed £12 billion in HVDC supply chain agreements in 2025 to deliver the Eastern Green Link 1-5 interconnectors and LionLink, with cable manufacturers, civils contractors, and converter-station OEMs hiring against these awards. On Rejobs, the employers posting most HV roles include Hitachi Energy and Siemens Energy, with TSOs like TransGrid, Enexis, SSE Renewables, and Scottish Power driving steady demand for substation and field-service engineers across Europe and Australia.

In-demand roles and qualifications

Job titles cluster around Electrical Engineer, Senior Electrical Engineer, Service Technician, Commissioning Engineer, and the specialist High Voltage Technician. UK employers expect AP/SAP authorisations under HSE GS6 and ENA NS6, NER-registered Chartered or Incorporated Engineer status, BS 7671 and BS 6626 competence, and IEC 61850 familiarity for digital substations. Cable jointers working on 525 kV DC need OEM-specific certifications from Prysmian, NKT, or Sumitomo - the "525 kV club" is a few hundred people globally, with day rates 2-3x standard 400 kV AC jointers.

Where the market is going

The IEA estimates that 8 million people work on grids worldwide today and the workforce must grow by 1.5 million by 2030 under stated policies, with 1.4 retirees per young entrant in grid roles versus 1.2 economy-wide. ENTSO-E's TYNDP 2024 forecasts over €800 billion in European transmission investment by 2050 and 35 GW of new cross-border capacity by 2030. The bottleneck is people: 96% of European utilities report skilled-workforce shortages slowing grid modernisation, and protection-relay engineers - once a quiet sub-discipline - now out-earn substation civils in 2025 European hiring data, because every new HVDC converter and offshore wind grid connection needs IEC 61850-based schemes that AC-trained engineers can't commission without retraining.

For job seekers, the unusual lever is project-specific experience: HV roles tied to flagship builds like SuedLink, Eastern Green Link, and the North Sea Wind Power Hub command premiums, and transferable HVDC commissioning experience opens doors across Europe, North America, and Australia simultaneously.