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!
23 Sep 2020: Developers have submitted a draft Environmental Impact Assessment Programme for approval. The draft EIA sets out a drastically different wind farm description to previous plans, foreseeing up to 75 x 14-18 MW fixed turbines, with variants of 1-3 x 350 MW layout. 350 MW is a minimum imposed by the government, with additional phases potentially incorporating hydrogen technology. Due to potential radar influence, developers have proposed payment of 1-2 million euros every year to defence agencies in order to support joint air monitoring system BALTNET. The developer was considering interconnection with Latvia (which would have required a transboundary EIA) but has abandoned this plan due to a.) Gulf of Riga fisheries do not want additional impact on fish migration b.) developers suggestions were not incorporated in the Marine Spatial Plan c.) the Estonian and Latvian Ministries of Economy are currently approving a protocol of common intentions and would compete with private companies in the construction of a wind farm and connection cables in the Gulf of Riga. Included in the EIA Programme is the intention for a feasibility study on hydrogen production, from the offshore substation and / or onshore substation and an electricity and / or hydrogen transmission system up to the onshore connection point (s). The study will investigate the pipeline to the transmission network, conversion to ammonia-marine fuel, rail transport with the restoration of the former Virtsu railway, land transport and re-conversion to electricity. Revised wind farm plans still incorporate synergy with mussel farming to increase revenue and mitigate environmental impacts, with expectations of achieving 50,000 tons/year.
Concept/Early Planning
1050 MW
4C Offshore | Location Map: Lat(58.125) Lon(23.417)

Subscribers can track wind farms on their dashboard.

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
1050 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
Gulf of Riga
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