Sumitomo Corporation Acquires 33.3% Stake in 1.5 GW Gwynt Glas Floating Offshore Wind Farm in UK Celtic Sea

Sumitomo Corporation has acquired a 33.3% equity interest in the Gwynt Glas floating offshore wind farm being developed by EDF Power Solutions and ESB in the UK Celtic Sea. The project has a planned capacity of up to 1.5 GW located approximately 40 km offshore, marking Sumitomo's first investment in a floating offshore wind project.

Transaction date: · Source: sumitomocorp.com

Key facts

Transaction date
Technology
Offshore Wind
Capacity
1,500 MW
Transaction price
Not disclosed
Region
Celtic Sea
Location
Approximately 40 km off the UK coast in the Celtic Sea
Continent
Europe
Development status
Under Development
PPA
n.a.

Technology details

Floating offshore wind farm with a planned generation capacity of up to 1.5 GW, located approximately 40 km off the UK coast in the Celtic Sea. Floating technology enables deployment in deeper waters unsuitable for conventional fixed-bottom turbines.

Additional information

Sumitomo Corporation acquires a 33.3% equity interest; EDF Power Solutions UK and Ireland and ESB remain as co-developers. This is Sumitomo's first investment in a floating offshore wind project. Sumitomo Corporation has been active in European offshore wind since 2014. The investment is undertaken under a 2025 MoU between Sumitomo and the UK's Office for Investment. Publication date not specified in source; please provide to complete the record.

Source

Original announcement: https://www.sumitomocorp.com/en/jp/news/release/2026/group/21350

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