Supplier Portal

Sofia will need competent, innovative and experienced suppliers to take the project from plans to reality. This portal gives you the opportunity to register your company's interest, search for suppliers, find out about contracting opportunities and read case studies of existing Sofia suppliers.


All potential suppliers who have registered their details with the Sofia Supplier Database can be found here. If you are looking for goods or services related to the project, please follow this link to the search function.


Sofia and our Tier 1 Contractors are committed to the development and growth of a competitive UK supply chain. To support this a series of supply chain webinars will be held to showcase contract opportunities during construction. There will be at least four webinars in the 2021 series, with a possible fifth to be confirmed.

  • July 6 – Van Oord - EPCI contractor for the foundations and array cables
  • July 7 – GE’s Grid Solutions and Sembcorp Marine- HVDC electrical transmission system
  • July 8 – Prysmian - HVDC export cables
  • September (date to come) – Siemens Gamesa Renewable Energy – turbine supplier. This event will introduce the packages, with a second event with specific contract opportunities to follow in 2022.

Each webinar is free to attend. Please review each suppliers' list of contract packages and book your place for the relevant webinar below.


Episode 1: Van Oord - Tuesday 6 July, 2021

Van Oord will be looking for support for the following packages, if your company provides these goods / services please register for the webinar via the link below.

Foundations - goods and support services: concrete structures (main access platform); secondary steel; cathodic protection; barges and tugs; marshalling ports; davit cranes; offshore communication system, and structural health monitoring system.

Array cables - goods and support services: cable protection systems; cable hang-offs; testing & termination works; transportation and logistics services for array cables; connectors; fibre optic patch panels, and cable cleats

Transport, vessels, lifting & logistics: mobile cranes, self-propelled modular transport, concrete support blocks; lifting equipment & tools; CTVs and SOV plus sea freight; gas/fuel & offshore temporary power; port agents & wharfage, and logistics & parcel services.

Site related: temporary site infrastructure - fencing, lighting & utilities; welfare/storage facilities, security & waste removal; civil works & site machinery, and temporary site office / portacabins.

General - goods and support services: accommodation - hotels and serviced apartments; office supplies (stationery and IT); PPE; mechanical & electrical consumables, and signage / branded merchandise.

Episode 1: Van Oord

Episode 2: GE's Grid Solutions & Sembcorp Marine - Wednesday 7 July, 2021

GE's Grid Solutions and Sembcorp Marine will be looking for support for the following packages, if your company provides these goods / services please register for the webinar via the link below.

Onshore converter station:

  • 400kV AC cable civil works & erection
  • Civil works design
  • Civil works activities
  • Management and engineering manpower
  • Building services
  • Security and CCTV
  • Cleaning
  • Low voltage cabling
  • Building materials
  • HVAC
  • Fire protection
  • Lighting

Offshore converter station:

  • Onshore logistics
  • Warehousing and local logistics
Episode 2: GE's Grid Solution and Sembcorp Marine

Episode 3: Prysmian - Thursday 8 July, 2021

Prysmian will be looking for support for the following packages, if your company provides these goods / services please register for the webinar via the link below.

  • Pre-lay survey
  • Horizontal directional drilling (HDD)
  • Boulder clearance
  • Route clearance/Pre-lay grapnel run (RC/PLGR)
  • Mattressing
  • Shore end works
  • Pulling at platform
  • Cable protection system (CPS)
  • Rock dumping
  • Guard vessel(s)
  • Crew transfer vessels (CTV) and or heli-service
  • Onshore installation
Episode 3 Prysmian


Sofia has signed contracts with suppliers for each of the key components of the wind farm. Most of the supply chain opportunities for the wind farm's construction will be through these Tier 1 (and their Tier 2) suppliers:


Siemens Gamesa Renewable Energy will supply 100 of its new state-of the-art 14MW machines to the project. It will be the first offshore wind farm in the world to use these turbines.

HVDC transmission system

A consortium of GE's Grid Solutions and Sembcorp Marine has carried out early works and will supply the two HVDC converter stations - one onshore and one offshore - and the offshore converter platform.  

Submarine and land export cables

Prysmian Group will provide a turn-key high voltage submarine and land export cable connection, including use of brand-new cable installation vessel Leonardo da Vinci and innovative cable technology.

Foundations and array cables

Van Oord will be responsible for the engineering, procurement, construction and installation of both the monopile foundations and array cables for the project. Through its UK branch MPI Offshore, Van Oord will create a logistics hub on the North East to deliver the comprehensive scope of work.


View tips for existing and potential suppliers to Sofia Offshore Wind Farm from the Sofia procurement team here.