East Anglia THREE Windfarm Advances UK Energy Transition with Landmark Turbine Installation and Domestic Manufacturing

(IN BRIEF) Iberdrola, through ScottishPower, and Masdar have set a new UK offshore wind record with the installation of the first turbine at the East Anglia THREE windfarm, featuring 115-metre blades—the largest ever used in the country. The £4 billion project, located off the Suffolk coast, will deliver 1.4 GW of renewable energy, enough to power over 1.3 million homes once completed. Manufactured in the UK by Siemens Gamesa, the turbines represent a significant advancement in scale and efficiency. The project is expected to support thousands of jobs during construction and contribute to long-term employment, while strengthening energy security and advancing the UK’s clean energy goals. With ongoing installation supported by specialized vessels, the project highlights both technological progress and international collaboration in the offshore wind sector.

(PRESS RELEASE) LONDON/ ABU DHABI, 21-Apr-2026 — /EuropaWire/ — Iberdrola, through its UK subsidiary ScottishPower, together with Masdar, has achieved a major milestone in offshore wind development with the installation of the first turbine at the East Anglia THREE project. The installation sets a new UK record, featuring blades measuring 115 metres in length—the largest ever deployed in British waters.

The East Anglia THREE offshore windfarm, located off the Suffolk coast, represents a £4 billion investment and is set to become one of the world’s largest offshore wind projects. Once fully operational, the 1.4 GW facility will generate enough renewable electricity to supply the equivalent of more than 1.3 million homes across the UK.

The project’s turbines, rated at 14MW each, are supplied by Siemens Gamesa. All 285 blades required for the 95 turbines are being produced domestically at the company’s manufacturing facility in Hull, reinforcing the UK’s role in the offshore wind supply chain. The turbines stand approximately 262 metres tall, with a rotor diameter of 236 metres, highlighting the scale and engineering advancement of the project.

Charlie Jordan, Chief Executive of ScottishPower Renewables, described the turbine installation as a landmark achievement for the companies involved and for the UK’s renewable energy sector. He emphasized that the project represents significant investment in both local and global supply chains, supports thousands of jobs during construction, and will create long-term employment opportunities in the region. He also noted the project’s contribution to strengthening the UK’s energy security through increased clean power generation.

Husain Al Meer, Director of Global Offshore Wind at Masdar, highlighted the importance of the milestone in advancing offshore wind capacity. He pointed to the project’s role in supporting economic growth, job creation, and long-term sustainability, while also underscoring the broader potential of offshore wind across Europe in enhancing energy security and achieving climate goals.

The blades used in the project exceed the previous UK record by seven metres, demonstrating continued technological progress in turbine design. Darren Davidson, UK Head of Siemens Energy and Siemens Gamesa, noted that the production of these blades in Hull reflects both industrial capability and ongoing investment in workforce development, including apprenticeship programmes.

The turbine installation has been carried out using Cadeler’s Wind Osprey jack-up vessel, with additional support from the next-generation Wind Pace vessel as the project progresses. Mikkel Gleerup, CEO of Cadeler, emphasized the efficiency gains from deploying multiple vessels in parallel and highlighted the operational flexibility provided by the new installation technology.

With construction continuing, East Anglia THREE is positioned to play a central role in the UK’s transition to renewable energy, combining large-scale infrastructure with domestic manufacturing and international collaboration.

Notes to editors:

The £4 billion East Anglia THREE project benefits from long-term revenue security through a 15-year CPI-linked Contract for Difference (CfD) awarded in the UK Government’s AR4 and AR6 auctions, as well as a Power Purchase Agreement (PPA) with Amazon signed in 2024. More than 2,300 jobs have been supported during construction, with 100 long-term roles, based in the East of England, created across its lifetime.

About ScottishPower
ScottishPower is part of the Iberdrola Group, one of the world’s largest integrated utility companies and a global leader in electrification. It has invested £30 billion in the UK over the last 15 years and will invest another £24bn – £18m every working day – in the UK between 2024 and 2028.

ScottishPower is the only vertically integrated energy company in the UK with businesses that operate from power to plug. Its ScottishPower Renewables business has over 40 operational offshore and onshore windfarm and solar sites generating enough green electricity to power around two million homes. It’s currently building two new offshore windfarms off the Suffolk coast, including the £4 billion East Anglia THREE – a joint venture with Masdar.

SP Energy Networks owns four regulated electricity network businesses in the UK and keeps electricity flowing to around 12 million people across a network spanning more than 170,000 kilometres.

And ScottishPower’s customer business supplies 4.2m customers with gas and electricity as well as offering clean technology like solar, ev charging and heat pumps for homes and businesses.

Together, they help ScottishPower deliver a better future, quicker.

scottishpower.com

About Masdar
Established in 2006, Masdar (Abu Dhabi Future Energy Company) is leading the global energy transformation by investing in, developing and operating renewable energy projects that deliver commercial returns while providing reliable, affordable clean power worldwide.

With over 20 years’ experience in renewables, Masdar has a diverse, derisked portfolio totaling over 65 gigawatts (GW) across six continents, including the world’s fastest-growing energy markets.

Jointly owned by TAQA, ADNOC and Mubadala, Masdar is driving the scale-up of renewables worldwide, targeting a portfolio capacity of 100GW by 2030.

For more information, please visit: https://www.masdar.ae and connect: facebook.com/Masdar.ae and x.com/Masdar

CORPORATE COMMUNICATION

Tel: +34 91 577 65 00
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SOURCE: IBERDROLA