Experts in offshore engineering

Covering all aspects of offshore engineering studies and concepts

From FEED to procurement, construction, installation and O&M

Experienced in-house engineering teams

The demand for renewable energy is growing and so is the scale of wind farms - and this is where we come in!

FEED study offerings

Our engineering expertise covers every aspect involved in transmitting electricity from offshore turbines to the onshore grid. Thus, we can offer a full scope of engineering services, ranging from front-end engineering and design (FEED) to procurement, construction, installation, operation and maintenance. Click below to see an overview of our capabilities and offerings.
Our offerings
FEED study

Every aspect of offshore engineering

 

From the onshore substation to and including the offshore substation and wind farm, our expertise covers every aspect involved in transmitting electricity from offshore turbines to the onshore grid. Thus, we can offer a full scope of engineering services, ranging from front-end engineering and design (FEED) to procurement, construction, installation, operation and maintenance.

With more than 30 years of experience working in the offshore energy sector, we understand the challenges involved in operating in a harsh offshore environment. Moreover, when you are a long way from shore, you need reliable solutions you can count on.

Based on the vast in-house knowledge and experience of our engineering teams and external partners we can offer as an example the following key topics as part of a FEED:

  1. Onshore substation:
    Complete civil, mechanical and electrical design and layout including landfall cables/transmission lines

  2. Offshore substation:
    Complete offshore substation topside design covering all electrical and mechanical systems and all structural elements complying with requirements. Geotechnical design and design of piles, the substructure and foundations.

  3. Subsea cables:
    Electrical cable design, determination of the ideal voltage levels and optimal export and array cable layout.

  4. Balance of Plant:
    Covering such topics as the overall wind farm single line diagram, the redundancy philosophy, preliminary grid study analysis to ensure grid compliance, overall SCADA architecture, a high-level protection philosophy and an operational philosophy to mention but a few.

  5. Generic:
    Covering such topics as CAPEX and OPEX optimization, the project schedule, design parameters based on our experience and the local environment, employer’s technical requirements, tender package documentation and conceptual reports to mention but a few.

 

Basic design of LV and utilities: Hornsea Two

    

Customer

Ørsted Wind Power A/S

Location

UK

Period

2018

Project scope

The scope of work covered basic engineering design of one 1380 MW offshore substation (OSS) and one reactive compensation station (RCS) including LV/utility and diesel systems, telecom, HVAC, FAS, cable systems and space optimisation, a specific cost-out process and 3D designs.

Hornsea

Electrical ITT documents: Changfang

    

Customer

Niras A/S

End customer Copenhagen Infrastructure Partners (CIP)

Location

Taiwan Strait, Taiwan

Period

2018

Project scope

The creation of the electrical documents for the invitation to tender for the offshore and onshore substations for the Changfang wind farm. The engineering included:
• The electrical system design
• The equipment specifications

Changfang

Full FEED study: Hailong II and Hailong III

    

Customer

Northland Power & Yushan Energy

Location

Taiwan Strait, Taiwan

Period

2018

Project scope

A full FEED study aimed at optimizing the grid connection solution for the Hailong II and Hailong III offshore wind farms. The study included array cables, offshore substations, export cables, onshore substation, grid calculations and details around jacket construction and soil conditions and cost models for the fabrication of different sizes of offshore substations.

Hailong

Full FEED study: HVDC platform

    

Customer

Confidential

Location

UK

Period

2018

Project scope

A full FEED study for all auxiliary systems for a 1.2 GW HVDC offshore substation, including construction, onshore testing, offshore installation, offshore testing and maintenance. The FEED was developed in close corporation with the supplier of the HVDC/HVAC equipment and the yard.

HVDC platform

Feasibility study: Alternative Grid Connection

    

Customer

Jhong Jie Industrial Co. Ltd.

Location

Changhua and Taiwan Strait, Taiwan

Period

2017

Project scope

The feasibility study consisted of a technical investigation regarding the grid connection of 6.5 GW of offshore wind farms including part of the export cable layout. The study included the design and layout of an onshore switchingstation, the route planning of 345 kV transmission lines to connect to the Taipower grid, cable corridors and a budget and a proposed financial model for bankability.

Alternative grid connection

Electrical FEED study: Vesterhav South and North

    

Customer

Wpd Denmark A/S

Location

Vesterhavet (Eastern North Sea), Denmark

Period

2016

Project scope

The FEED Study consisted of a technical investigation in respect of utilization of 33 kV or 66 kV array grids. The study included the specification of all electrical disciplines, planning onshore substation designs, cable corridors and landfall sites, cost estimation model and development of a SCADA and Station control systems.

Vesterhav

Contact us to find out more

Engineering studies and concepts

See project references and capabilities within engineering studies and concepts.

FEED - we have done it before
We have participated in most of the major wind farm projects in Europe.
30.04.2019
FEED references and capabilities
What we CAN do - and what we HAVE already done!
22.05.2019
We bring energy to shore ...
Since 2002 we have been an important part of many offshore wind projects.
30.04.2019

Tommy Flindt

Director Technology

Semco Maritime A/S

Borupvang 3

2750 Ballerup

Denmark

 

 

Derek Neil Phillips

Senior Sales Manager

Semco Maritime A/S

Esbjerg Brygge 30

6700 Esbjerg

Denmark