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Tel. +45 7916 6666


Semco Maritime
Esbjerg Brygge 30
DK- 6700 Esbjerg

Wind farm substations

We bring energy to shore

Since 2002, when the first offshore wind farm was constructed in Danish waters, Semco Maritime has participated in more than 20 of the major offshore wind farm projects in Europe.

World leader in offshore substations!

In collaboration with partners we have successfully completed the design and construction of more than 20 offshore substations, which makes us a leader in EPCI solutions and services for the offshore wind industry.

Our in-house specialists cover all elements involved in connecting the offshore wind power plant to the onshore grid. As such we can help you meet all your electrical infrastructure needs including onshore and offshore substations.

Watch how we complete a 1,000 tonnes offshore substation in just 3 minutes ...

In reality, it was 16 months from contract signing to completing - still pretty fast! Northwester 2 was the third time we (together with Bladt Industries and ISC) delivered a complete substation to the developer Parkwind. In 2013, the Northwind substation was delivered and only three years later, Bligh Bank - both projects as EPCI contracts. The wind farm is being installed about 46 km off the Belgian coast and will have a total installed capacity of 219 MW.

We are EPCI specialists

Efficient project management, engineering and design

Our experts are available for the full range of consultancy services and can provide complete project management regarding the grid connection of offshore wind farms for wind farm developers.

Our services include:

  • Feasibility studies
  • Electrical design, layout and detailed engineering
  • Mechanical and structural design
  • Technical specification
  • Tender inquiry and contract negotiation
For our projects, we also design and deliver all necessary electrical systems, including:

  • High, medium and low voltage switchgear, transformers, supervisory control and data acquisition (SCADA) systems, HVAC, diesel gensets, UPS and cables
  • Fire protection, including systems for detecting and fighting fire
  • Communications equipment such as, CCTV, PA/PC, telephone lines and LAN networks.
O&M and service:

Maximise uptime, minimise expenses

Since the start of our renewables adventure in 2002, Semco Maritime has been Safeguarding People and Assets by providing a choice variety of ad hoc, critical, regulatory and asset monitoring services.

Over the years of servicing more than 55 different offshore wind transmission assets, we have gathered a complete set of skills, experiences and supply chain, making us a market leader in providing turnkey O&M solutions.

Our innovative and sustainable O&M solutions are setting new standards in driving high availability levels for power transmission assets. Our service packages are customized to the specific needs of our customers and the individual site.

Our measure of success is asset availability and people safety.

Choose only one provider to deliver and service all systems:

Telecommunication and IT

Explore our telecommunication and safety solutions for your offshore wind farm. As a systems integrator we deliver and service all types of systems.

Firefighting solutions

Our customized firefighting and detection solutions satisfy the highest demands for reliability, operational safety and life-long technical support.

Manpower and consultants

We supply reliable, dedicated and highly skilled manpower and consultants to your operation. We adapt to your operation - easy hassle-free up and down-scaling - professional and cost-efficient.

Products and components

Your dedicated one-stop products and component supplier. Fast service, global reach and industry experience Find the products and components you need for hazardous areas.



Wherever you are in the world, we are ready to share our experience with you.

Derek Phillips

Director, EPC Sales, Renewables

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg

Bernd Hardy

Senior Sales Manager, Renewables

Semco Maritime GmbH
Kaiser-Wilhelm-Straße 50
20355 Hamburg

Matthew Camp

Senior Sales Manager, Renewables

Semco Maritime Ltd.
37 Abercrombie Court, Prospect Road,
Westhill, Aberdeenshire, AB32 6FE
United Kingdom

Maria Alexandra Balslev Jørgensen

Junior Sales Manager, Renewables

Semco Maritime A/S
Esbjerg Brygge 30
6700 Esbjerg