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!
07 Feb 2024: Taken from Capital Markets Day update Feb 2024: OceanWind 1 Context: Project had no revenue inflation indexing, but was being developed in a context of increasing interest rates and significantly increasing CapEx inflation, which was 3x to 4x as high as consumer price inflation, and even higher in an immature offshore wind market like the U.S., returns were therefore already under pressure. Project had lost most of the float in its schedule, but Ørsted had chosen to continue to mature the project and to commit capital with the intent to reach the committed COD date. In hindsight was not the right decision to commit such significant capital to a pre-FID project. With intent to qualify for the tax credits, Ørsted made itself dependent on the immature supply chain in the U.S. market, and was deeply engaged in building new facilities. Its commitments were part of the business case for ensuring that new build vessels could reach FID.   Orsted felt comfortable that local suppliers were on track, but progress was slow due to a lack of qualified labor, difficulties ramping up and other challenges. Overall, and especially over the summer and early fall 2023, there was a number of delays and suppliers that failed to live up to the commitments, meaning the project was very badly hit.  Following vessel delays Orsted then found itself unable to source backup capacity for installing in 2025. By the time this was known it was too late, meaning the project would face such a delay it would have to recontract most of the CapEx at even higher rates. This ultimately led to the economically rational decision to seize development. Additionally, there were local construction permits turned out to be more challenging than assumed, plus a delay on the air permit for the project, which again post additional uncertainty.  At the time of the cancellation decision, it was also not clear what additional tax credit the project would qualify for. Learnings based on the series of events with Ocean Wind 1:  - Significant additional focus on supply chain contingency planning - scenario planning of what material risks could occur, at the same time. This is in addition to existing project risk registers of over 100 risk identified, quantified with mitigations. - Consider outcomes of concurrent risks, notably those with critical dependencies. - Proactively secure capacity, especially installation capacity, well ahead of time. That is an "absolute key learning".  - In newer markets, or when new supply chain capacity is being built, work even closer with the vessel yards, with the manufacturing facilities and verify they are following construction time lines. If not, can we help? Or do more proactive contingency planning? - After a period with very volatile environments prioritize only the inflation indexed contracts, especially in markets like the U.S., where there's a long time from award to actually FID. In U.K. (which has inflation protection) there's a much shorter time line between award and FID (i.e. lower risks). - Significantly higher scrutiny of pre-FID commitments - Orsted will not again allow pre-FID CAPEX at the significant levels seen at Ocean Wind 1. This learning was already carried into Ocean Wind 2 - Have all critical local permits in place before taking FID or undertaking capital commitments. - Prioritize projects with a flexibility on the time line for the COD, as this provides additional flexibility in how the company can commit CapEx. This is also better for the power offtaker, as its better to deliver a year later than not at all. - Stage-gate reviews - expert teams from outside of the project team scrutinize the project ahead of stage gates to ensure the project is reigourously challenged before committing additional resources. This could also include external company reviews for select projects. Mitigating actions are then pushed for if needed.
United States
1100 MW
4C Offshore | Location Map: Lat(39.118) Lon(-74.239)

Subscribers can track wind farms on their dashboard.

General Information
Ocean Wind 1
Other Names
Lease OCS-A 0532; Lease OCS-A 0498 (South Lease Area), Ocean Wind 1
United States
Development Status
Category or Round
Unlock with a freemium account
Unlock with a freemium account
Unlock with a freemium account
Unlock with a freemium account



Ørsted US Offshore Wind

Ørsted US Offshore Wind


Ørsted US Offshore Wind

Ørsted US Offshore Wind


Ørsted US Offshore Wind

Ørsted US Offshore Wind

Offshore Construction Starts
Submitted For Consent
Consent Authorised
Financial Close
First Power
Full Commissioning
Unlock with a freemium account

Revenue Mechanism
Revenue Details
/MWh (EUR /MWh)

How does the database work?

4C Offshore marine intelligence software provides you with exclusive access to a range of specialised services including the Global Offshore Wind Farm Database. 4C Offshore grants you exclusive access to online and offline databases, reports, newsletters, online tools and more.

There are three levels of access: Free, Freemium and Full. Freemium allows you to personalise notifications, use the search function and access more data.

You will need Full access to use the 4C Offshore interactive system, access reports, updates, news, downloads and more. To find out more about how 4C Offshore software works and the benefits of Full access, enquire below.

Sign up to Freemium Enquire about 4C Offshore
Power & Turbines
Windfarm Capacity
1100 MW
Turbine Model
Unlock with a freemium account
Other Turbine(s) Used
Min. Turbine Capacity (MW)
Max. Turbine Capacity (MW)
Min. Number of Turbines
Unlock with a freemium account
Max. Number of Turbines
Total Turbine Height
Hub Height
Rotor Diameter
Foundation Type
Unlock with a freemium account
Foundations on Wind Farm
Foundation Comments

Location & Environment
Sea Name
North Atlantic Ocean
Unlock with a freemium account
Depth Range (Chart Datum)
Depth Range (Stated by Developer)
Distance from Shore (Developer)
Unlock with a freemium account
Distance from Shore (Computed)

Installation Base
Unlock with a freemium account
Ops and Maintenance
Unlock with a freemium account

Number of Offshore Platform(s)
Shared Platform Type
Grid Connection Point
Unlock with a freemium account
Cable Landing Point

Export Cables (AC & DC)
Number of Export Cables (AC)
Unlock with a freemium account
Average Length per Cable (AC)
Additional Requirements (AC)
Nominal Voltage (AC)
Number of Export Cables (DC)
Average Length per Cable (DC)
Unlock with a freemium account
Additional Requirements (DC)
Nominal Voltage (DC)

Nominal Voltage

Onshore Cables
Number of Onshore Cables
Average Length per Cable
Expected Life