Skip to Content
The Siemens portfolio for efficient power transmission comprises high-voltage transmission solutions, high-voltage switching products and systems as well as power and distribution transformers.
Increase in transmission capacity and improvement in power quality and system stability
Low-loss power transmission over long distances, system interconnection and improvement of system security
Embedding of decentralized or dispersed generation such as off and on-shore wind farms in the power systems
The complete portfolio from one source for short commissioning times and low life cycle costs.
Air insulated or gas insulated switchgear and turnkey solutions
The right transformer for every requirement
GIL for high power transmission, laid above ground or in tunnels or directly buried
Planning, installation and service of high-voltage cable systems
Repair, maintenance, and updates, to ensure the efficiency and reliability of power grids
As a global leader in power transmission technology and a long-standing, trusted partner of public entities and private enterprises, such as utilities and grid operators, we have always been in the vanguard of technical development. We look back on a long history of trendsetting power transmission projects around the world that have proven over and over the reliability and the outstanding quality of our products, solutions, and services.
Our product range spans the entire field of high-voltage power transmission: extraordinarily powerful and trendsetting DC transmission systems and innovative reactive power compensation systems for AC grids, complete grid access solutions, air and gas-insulated switchgear, turnkey substations, transformers for various applications, and high-voltage products, such as circuit breakers, surge arresters, disconnectors, and bushings.
Various factors will dominate the power transmission market in the years to come: the drive toward renewable energy, the expansion and interconnection of grid infrastructures, and the need to gradually replace and upgrade aging grid infrastructures. Discover how our broad portfolio of innovative products and solutions for power transmission expertly supports these transformations.
Toward a European energy market
Siemens put the converter stations for the transnational HVDC-project Inelfe into operation. The power link will double the capacity for energy exchange between France and Spain. more
A milestone in offshore wind power: Siemens hands over HelWin1
Siemens has now handed over HelWin1, the second North Sea grid connection in quick succession, to its client TenneT. The German-Dutch transmission system operator has now also put this grid connection into commercial operation. more
Offshore grid expansion: Siemens installs second HVDC converter platform
Siemens has installed the BorWin2 offshore platform in the North Sea northwest of the island of Borkum. This marks Siemens' achievement of the second crucial milestone in the German grid connection projects under contract with TenneT. more
Operating manual for GEAFOL cast resin transformer as app
Take the GEAFOL operating manual with you at all times and download the Siemens GEAFOL app for your GEAFOL cast resin transformer to your iPhone, iPad or Android-device. You can also use the video tutorials presented in various languages offline. more
Vegetable oil transformer for ultra-high voltages
The German power grid operator TransnetBW has commissioned the first impressively environmentally friendly transformer in Bruchsal, Germany. It is the first power transformer in the 420 kV capacity range insulated and cooled using vegetable oil. more
New reference website for HelWin 1
The grid access platform HelWin1, which will transmit offshore wind power for more than 500,000 German households to the mainland, was successfully anchored in its final position in the North Sea. A new project reference page providing video documentation of the completed project phases is online now. Why not have a look and discover more details about HelWin1? more
Siemens completes the world’s longest and highest-capacity GIL connection in China
Siemens completed the construction of a gas-insulated transmission line (GIL) for China Three Gorges Project Corporation at the country’s second largest hydropower plant "Xiluodu". The project consisted of the installation of a total of seven three-pole systems, each with a length of 620 meters at an operating voltage of 550 kilovolts and with a power rate of 3900 MVA. The single-pole tube length is 12.5 kilometers, making this the world’s longest GIL. more
Siemens has installed first offshore platform in the North Sea
Siemens has installed the HelWin1 offshore platform in the North Sea, marking the successful completion of a significant stage in German grid connection projects. When the HelWin1 converter platform goes online, it will link the Nordsee Ost and Meerwind wind power plants to the mainland. The platform will convert the up to 576 megawatts (MW) of electricity produced in the wind power plants to direct current and transmit it via submarine cable to the German mainland 85 kilometers away. The low-loss direct current power is then converted back into alternating current at a converter station on land and fed in to the German power grid. more
HVDC Pole 3 commissioned in New Zealand – an “incredible feat of engineering”
New Zealand residents can sleep easier this winter following commissioning of the new High Voltage Direct Current (HVDC) converter equipment – Pole 3 – in May. The new Pole will allow electricity transmission operator Transpower to better access New Zealand’s vast hydroelectric resources in the South Island and more effectively balance energy across both islands. Building a new HVDC Pole in the middle of an operating power system – and in one of the world’s most extreme seismic zones – proved to be a huge challenge for Siemens and Transpower. After a successful trial operation, Pole 3 was revealed to about 100 industry leaders, customers, staff and key contractors at the Haywards substation, north of Wellington, at a ribbon-cutting ceremony on 22nd of July. more
Completion ahead of schedule: Transmission completes important Hudson project supporting reliable power for New York City
The Hudson project was completed by Siemens Energy Transmission and commissioned six weeks ahead of schedule, on June 3, 2013. The Hudson project is a High Voltage Direct Current (HVDC) project that connects power from New Jersey to Manhattan through a HVDC station and a 7.5 mile (12 km) underground and underwater cable. It is capable of providing 660 MW of power reliable power to New York City, approximately five percent of the City’s peak demand. The contract was awarded to Siemens Energy, Inc. by Hudson Transmission Partners, LLC, managed by PowerBridge, LLC of Fairfield, Connecticut. more
Power Markets in Transition - New HVDC Solutions for the Power Grids of the Future
The integration of a large number of new energy sources, such as renewable energies, into existing grids sets new demands on future power transmission solutions. Siemens offers solutions to these challenges. In an interview with one of our transmission experts, we explain the HVDC solution strategies for correcting DC line/cable faults in hybrid systems. more
The Power Engineering guide is a useful reference for engineers.