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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.

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24 Mar 2023: Update 28/11/2023: Cerulean winds have signed all three of their INTOG exclusivity agreements. Cerulean Winds and Frontier Power International have been awarded three lease options for the Central North Sea in the highly competitive INTOG leasing round, the results of which were announced by Crown Estate Scotland on 24 March 2023. Cerulean Winds will be looking to pay option fees amounting to £67m, £35m and £35m for the three TOG respective projects. Crown Estate Scotland (CES) has announced the results of the INTOG round. 13 projects out of 19 applications have been offered Exclusivity Agreements. 5 IN projects, totalling just over 139km2 and 499 MW, will be offered a 25-year seabed lease. 8 TOG projects, totalling 1534km2 and 5GW, will be offered a 50-year seabed lease. If the projects accept the agreement, development work can be initiated and Marine Scotland will complete the INTOG Sectoral Marine Plan (SMP). If the project is successful in the SMP, an option agreement will be offered and it will subsequently go through planning, consenting and financing phases. After these phases are complete, the project can progress onto a full seabed lease. Option agreements are expected in 2024 after the SMP finalisation and will earn CES roughly £262m in applicant fees. To secure an option agreement, developers must also provide a Supply Chain Development Statement (SCDS).
United Kingdom
Concept/Early Planning
1008 MW
4C Offshore | Location Map: Lat(57.896) Lon(1.682)

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Power & Turbines
Windfarm Capacity
1008 MW
Turbine Model
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Other Turbine(s) Used
Min. Turbine Capacity (MW)
Max. Turbine Capacity (MW)
Min. Number of Turbines
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Max. Number of Turbines
Total Turbine Height
Hub Height
Rotor Diameter
Foundation Type
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Foundations on Wind Farm
Foundation Comments

Location & Environment
Sea Name
North Sea
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Depth Range (Chart Datum)
Depth Range (Stated by Developer)
Distance from Shore (Developer)
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Distance from Shore (Computed)

Installation Base
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Ops and Maintenance
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Number of Offshore Platform(s)
Shared Platform Type
Grid Connection Point
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Cable Landing Point

Export Cables (AC & DC)
Number of Export Cables (AC)
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Average Length per Cable (AC)
Additional Requirements (AC)
Nominal Voltage (AC)
Number of Export Cables (DC)
Average Length per Cable (DC)
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Additional Requirements (DC)
Nominal Voltage (DC)

Nominal Voltage

Onshore Cables
Number of Onshore Cables
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Expected Life