High Voltage Expert - HV Substations & HV Equipment (M/F)

Neoen; Paris; On-site; EUR 90,000 - 130,000; Full time

Job summary

Neoen is seeking a High Voltage expert to act as the technical owner for HV substations and HV equipment across Solar, Wind, Storage and Datacenter plants. You will guide design, permitting, procurement, construction, commissioning and operations.

Key tasks include writing technical specs for HV transformers, reviewing contractor designs, supporting early-stage development with layout concepts, and auditing substations in construction and operation.

Qualifications

• Experience in HV substations design and permitting.
• Knowledge of HV equipment design and layout requirements.
• Familiarity with procurement support and supplier evaluation.

Responsibilities

• Develop and enhance guidelines and technical specs for HV substations (66 kV–550 kV) and HV equipment.
• Define HV substation architecture and redundancy for each project (busbar, N-1, transformer and protection duplication, DC supply, telecom, SCADA).
• Assist Procurement by drafting technical specs for HV transformers and equipment; review offers and test plans.

Skills

HV substations

Substation design

Redundancy concepts

Busbar configuration

N-1 criteria

Transformers

Protection systems

DC power supplies

Telecom

SCADA

Job description

Neoen is looking for a High Voltage expert to act as the company technical owner for HV substations and HV equipment used on our Solar, Wind, Storage and Datacenter power plants — from early design and permitting through procurement, construction, commissioning and operations.

Key tasks include:

• Develop and enhance the internal guidelines and technical specifications for HV substations (from 66 kV to 550 kV) and HV equipment (design, layout requirement)
• Define HV substation architecture and the redundancy level appropriate to each project: busbar configuration, N-1 criteria, transformer and protection duplication, redundancy of DC supplies, telecom and SCADA.
• Assist the Procurement teams in the following tasks :

1. Write and review the technical specifications for HV power transformers and other HV equipment (Dead tank Breaker, GIS…); evaluate supplier offers and deviation lists; approve test plans; witness factory tests
2. Assist in providing early-stage cost estimations
3. Review, challenge and analyses of HV substation design submitted by contractor: design & cost optimizations layout and clearances, redundancy philosophy
4. Review and challenge the critical list of spare parts proposed by the suppliers
5. Support Design and/or Owner Engineers selection (Mastergrid, Elys, Aurecon, Aecom, GHD…) before or after contract signature

• Early-stage support to the Development Team :

1. Preliminary layout of the HV substation for prospection and permitting,
2. Propose early-stage design philosophy and concepts
3. Review and advice on the interconnection options to connect to the Grid

• Support the Construction & Asset management teams :

1. Audit substations under construction and in operation; issue prioritized findings to be shared with the construction teams
2. Review commissioning and energization readiness and procedure
3. Analysis of defects, failure and root-cause analysis including online monitoring tools of our HV Transformers