The transformation of electricity – including air-insulated, gas-insulated and converter substations is a longstanding core business for Omexom and has been so for over 100 years.
As an EPC contractor, Omexom delivers value-added solutions during the complete life-cycle of substations.
Our DNA as a local contractor with global capabilities allow us to support our customers for all sizes of project and any kind of project complexity. Our independence from material manufacturers guarantees a perfect fit between the needs and the solution provided by our highly skilled teams of engineers.
Our expertise covers all steps of project development, from basic design, detailed design, procurement, construction, commissioning, maintenance and operation.

We have EPC references in HVDC Substations, AC Substations up to 500 kV in air insulated and up to 400 kV in gas insulated

MV & LV substations

Design, construction & maintenance

For medium and low voltage substations, Omexom supports its client throught administrative procedures, provides design studies and ensure civil works, lifting and implementation. Omexom is expert regarding connection, testing, commissioning and maintenance.

We work with various substations systems, including air and gas insulated systems, and indoor modular substations.

We provide a range of technical services, including feasibility studies, diagnosis, switchgear repair, power transformer refurbishment, and on-load tap changer maintenance.

HVDC Substations

High voltage direct current

At Omexom, we specialise in helping HVDC converter stations meet their energy transition challenges. We design, construct, and maintain all HVDC substation equipment, including converters, capacitors, transformers and specific devices. We also have the expertise to deliver transport infrastructures.

Digitalization programs

Support our customers across all their assets

We are also able to support our customers in defining and upscaling digitalization programs across all their assets including:

  • digital substations,
  • substation digital twins,
  • fault localization software,
  • remote monitoring and control solutions,
  • substation security, cybersecurity,
  • safety programs for isolated workers

And many other solutions to improve the reliability of their network, maintenance costs, the safety conditions of their workers and the environmental impact of their substations.

News related to Substations

23/02/2021 Substations, The Netherlands

Installation of GIS equipment and transformers in two large high-voltage offshore substations

On behalf of HSM Offshore, Omexom in the Netherlands was commissioned to install GIS (Gas Insulated Switchgear) equipment and 66kV and 220kV transformers in two large high-voltage offshore substations.
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18/02/2021 Substations, Sweden

Upgrading Umea’s power grid

Umeå's growth, located in the north-east of Sweden, results in strong demands on a sustainable and reliable power grid. To address this need, the grid owner, Umea Energi Elnat AB, meets this with the project "Spänningshöjning", a comprehensive upgrade of the power network in the region during the period 2015 to 2024.
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04/02/2021 High voltage, Indonesia, Substations

Commissioning of the first 150kV high-voltage system in the Northern Maluku Islands

Omexom in Indonesia has commissioned the first 150kV high-voltage system in the Northern Maluku Islands on behalf of the Indonesian national electricity company. After 24 months of work, the teams have just completed the commissioning of the first 150kV system in Ternate.
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26/01/2021 High voltage, Solar

Smart maintenance for optimal return in the Netherlands

Omexom in the Netherlands has been awarded a five year contract, from Stern Energy, for the maintenance of the high-voltage installation of the solar power plants. This will ensure that the solar plants can produce optimal and continuous energy efficiently and deliver this to the grid at any time. The high-voltage installation is an important part of this process. Omexom will ensure that the installation remains in perfect condition.
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05/11/2020 Substations, Sweden

Omexom is building a new substation for the Swedish grid operator Svenska kraftnät

Omexom teams are building a new 400 kV substation, Tovåsen, which will be built 25 km south Ånge in Gävleborg County in Sweden.
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13/08/2020 Substations

Extension of the substation EOS380

The Dutch government is investing in green energy. Solar panels and (offshore) windmills are being built throughout the Netherlands. The EOS380 substation is an important connection to the electrical network and other substations.
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07/05/2020 Substations, Sweden

Securing power to Stockholm airports Arlanda and Bromma

Omexom has been assigned a four year contract for maintenance and service of substations supplying the airports Arlanda and Bromma with power.
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07/05/2020 Norway, Substations

Upgrading Uliven Station in Norway

Omexom in Norway is awarded by Hafslund Nett (electricity operator in Norway) to upgrade Ulven substation in central Oslo.
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