TGS | Powered by 4C Offshore

4C is now TGS

We are excited to announce a significant milestone in 4C Offshore's journey. Our integration into the TGS family marks the beginning of a new era in offshore wind market intelligence.

Learn what this means for you!

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Offshore Transmission & Cables Intelligence

Understand markets and drive growth.

Access the 4C Offshore WebApp, the powerful intelligence tool fuelled by offshore global wind market data and insights.

Global Data

In-House Specialists
Providing the leading offshore transmission cable subscription.

A Decade of Data
Providing reliable data for 10+ years.

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A Growing Market

The offshore wind farm sector has grown significantly in recent years, driven by advances in technology, government policies, and declining costs.

Global offshore wind capacity reached 29.1 GW in 2019, up from just 3.5 GW in 2010 and in Europe, offshore wind power capacity is expected to reach 450 GW by 2050, with major growth expected in markets such as the UK, Germany and the Netherlands.

This growth has seen the emergence of a power grid that includes subsea power cable projects consisting of offshore wind farms, country-to-country interconnectors, grid reinforcement and island connections.

Imagine what you could do for your organisation with access to complete cable and interconnector data from all the offshore projects across the planet, including detailed information about the foundations, project milestones, vessels and contracts awarded.

How we can help

4C Offshore has developed 4C Offshore, a comprehensive suite of reports, databases and online tools.

4C Offshore allows us to create sector-specific subscriptions to help people gather intelligence to inform decisions, for example, our Offshore transmission & Cables Intelligence subscription.

For over ten years, 4C Offshore has led the way to provide organisations like yours, with a competitive edge and identified opportunities. We have also forecasted supply capacity and project demand, enabling users to invest wisely today, in tomorrow’s revenue streams.

Sector subscriptions are fuelled by wide-reaching data and insights to help organisations make informed decisions.

4C Offshore’s transmission & Cables Intelligence subscription can help with:

  • Site selection
    • Offshore transmission and cable data can provide information on existing infrastructure, such as subsea cables and transmission lines, which can help developers to identify potential sites for offshore wind farm energy projects. This can save time and reduce costs by avoiding areas where infrastructure already exists or where laying new cables would be particularly challenging.
  • Resource assessment
    • Data can provide information on the availability of electricity transmission infrastructure in a given area, which can help developers to assess the potential energy yield of offshore renewable energy projects. This information can be used to optimise the design and layout of projects to maximise energy production.
  • Project planning and design
    • Offshore transmission and cable data can aid in the planning and design of offshore renewable energy projects. By incorporating data on existing infrastructure, developers can design projects that minimise the need for new cables and transmission lines, reducing costs and environmental impact.

What’s in the Offshore transmission & Cables Intelligence subscription?

Online/Offline Databases

  • Offshore wind cable database
  • Interconnector cable database
  • Project details, supply chain and contracts awarded are all listed
  • Updated hourly
  • Download as Excel for offline use


  • Exclusive news straight to your inbox
  • Daily, weekly, fortnightly or monthly - you choose!


  • Frequent market reports
  • Supply and demand analysis
  • Cable failure analysis
  • Download as PDF for offline use

Online Tools

  • Graphs and charts - market shares for installers and manufacturers
  • Charts detailing company activities for global interconnector projects
  • Interactive map, filter by wind/interconnector project status as well as a measuring function

Why choose an Offshore transmission & Cables Intelligence subscription?

  • One-stop-shop for offshore sector data and insights
  • Reduce waste on time-consuming research
  • Access forecasts
  • Investigate component trends
  • Analyse supply and demand data including existing stakeholders
  • Understand contractors' project experience and market presence
  • Understand specific project timelines and lifecycle
  • Reveal business opportunities
  • Target growth areas
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