HVDC transmission solutions

Strengthen your transmission network with HVDC solutions

High-voltage direct current (HVDC) transmission systems are becoming more and more important in an energy landscape that is characterized by increasing digitalization, decarbonization, and distributed generation. They offer the most efficient means of transmitting large amount of power over long distances, help connect green power to the grid, and stabilize three-phase-grids.

Discuss your individual questions with the Siemens HVDC experts!

Contact the customer service

Gas-insulated switchgear for DC applications (DC GIS)

The new Siemens DC gas-insulated switchgear (DC GIS) were developed on the basis of the proven Siemens AC GIS and on newly developed insulation technologies for direct current.

Why high-voltage direct current?

Performance, efficiency, reliability

HVDC systems are ideally suited to support and improve the sustainability, efficiency, and reliability of power supply systems.

They supplement the existing AC infrastructure through

  • highly efficient long-distance power transmission
  • grid access for onshore and offshore
  • renewables transnational grid connections
  • provision of fully controlled power supply in either direction
  • the connection of asynchronous grids and grids with different frequencies
  • performance improvements and firewalling of AC grids against cascading blackouts  

A pioneer in HVDC technology, Siemens provides a comprehensive portfolio of efficient and sustainable solutions for all HVDC applications.



ULTRANET – the world‘s first HVDC PLUS system with full-bridge topology

The special nature of a collaboration with Siemens is the innovativeness that we've never experienced in this way anywhere else
Dipl. -Ing. Ludger Meier, Director of Operations / Project Planning, Amprion
Partnership throughout the life cycle

Solutions and services for the entire life cycle

From ideas to individual business cases

  • Analysis of current grid and status; identify future requirements
  • Identification of necessary and recommended upgrades and improvements to meet future requirements
  • Feasibility studies and FEED studies
  • Development of basic concepts and detailed design
  • Support in the increase of renewable energy and in developing future energy strategies

From ideas to concrete business cases

  • LCC and VSC MMC technologies in various topologies
  • Outstanding operational performance in terms of efficiency and availability
  • Development of customized solutions that meet all individual requirements, operational concepts, and operational needs
  • One-stop turnkey solutions on demand

Everything it takes to ensure efficient, reliable operation

  • Investment protection and maximized converter performance
  • Consideration of equipment wear, technological evolution, and changing market structures and requirements
  • Smooth and successful refurbishment and upgrade solutions ensure or even extend the system’s competitiveness
  • Individual strategy for each project based on Siemens’ long-term HVDC experience
  • Early engagement and precise planning to ensure all individual requirements and timelines are met
  • Continuous dialogue for maximum planning security
  • Siemens‘ expert supervision and support from the earliest planning phase to project execution and all the way to service

Everything it takes to ensure efficient, reliable operation

  • Onsite condition assessment (“health check”) including detailed reports and recommendations for availability improvement and lifetime extension
  • Condition monitoring and diagnostics using online data for early fault detection and the prevention of failures
  • Remote 24/7 monitoring, analysis, and recommendations from Siemens experts
  • Asset management and vendor-independent consulting and advisory service
  • Maintenance contracts, field service and repair, technical hotline, and maintenance management
  • Quick and reliable spare parts supply, spare parts management
  • Customized operator qualification and training sessions in training rooms, at test fields, and on-site

Downloads, support, and services

This is where you can find our brochures, contact details for individual consulting, and further information.

Customer Support Center

  • +49 180 524 70-00

    (Charges depending on provider) (From the German fixed network € 0.14/min. and from the German mobile phone networks max. € 0.42/min.)

Power Transmission Service

Siemens supports the development of the power transmission and distribution grid with its strong team of experts and a number of services.