High Voltage Engineering Specialist

Cologne, Germany

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reference
Job reference 1273816
location
Location Cologne, Germany
sector
Sector Energy - Renewables
function
Function Engineering & Design
type
Employment type Contract
date
Date published June 1, 2026

We are seeking a High Voltage Engineering Specialist to lead the design, integration, and compliance of HV systems and grid connections for utility-scale energy projects, including BESS This role will support the full project lifecycle from concept through commissioning ensuring all systems meet grid codes, utility requirements, and industry standards.

Key Responsibilities:

Grid Connection & Compliance:

Lead the development of grid connection strategies and concepts

  • Ensure compliance with TSO/DSO requirements and grid codes VDE-AR-N 4110/4120/4130
  • Define compliance frameworks, simulation scope, and certification requirements
  • Develop and define operational modes
  • Interface with grid operators and support connection studies and approvals

High Voltage System Design:

  • Design and review HV systems, including:
  • Substations and switchyards
  • Transformers
  • HV cable systems and overhead line interfaces
  • Develop and validate:
  • Single Line Diagrams
  • Equipment specifications
  • Electrical layouts and earthing concepts
  • Ensure integration between HV, MV, and plant systems

Protection, Control & Integration:

  • Define and assess protection philosophy and relay settings
  • Oversee SCADA / PPC / EMS integration
  • Coordinate interfaces between:
  • HV systems
  • Power Conversion Systems
  • Plant control and automation systems
  • Ensure compliance with power quality, dynamic performance, and grid-support requirements

Construction & Commissioning:

  • Support installation and site activities for HV equipment
  • Contribute to energisation procedures and commissioning
  • Review FAT/SAT and commissioning test procedures
  • Support grid compliance testing and performance validatio
  • Degree in Electrical Engineering, Power Systems, or equivalent
  • Extensive experience in high-voltage systems ypically ?110 kV)
  • Proven track record in grid connection of power plants, BESS, or renewable projects
  • Experience with grid compliance processes and certification

Grid & Power Systems:

  • Grid code compliance
  • Power system studies
  • Grid connection procedures and permitting

HV Engineering:

  • Substations transformers, HV cables
  • Protection systems and relay coordination
  • Earthing and insulation coordination

System Integration:

  • Experience with inverter-based resources
  • Power Conversion Systems / inverters
  • Grid-support functions reactive power, frequency response, black start

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