Copenhagen Infrastructure Partners (CIP), through its fifth flagship fund, Copenhagen Infrastructure V (CI V), has acquired the 25% share previously held by the Macquarie-led consortium in the Five Estuaries Offshore Wind Farm project. The acquisition, announced on 13 October 2026 from Copenhagen, strengthens CIP's UK energy infrastructure portfolio.

Deal Details

With the transaction complete, CIP joins EDF power solutions, which holds 33.33%, along with ESB and Sumitomo Corporation, each holding 20.83%, to take the project forward.

The updated partnership structure marks a significant milestone for the Five Estuaries project, bringing together experience in developing, financing, and operating large-scale offshore wind farms globally. CIP, which continues to expand its portfolio of UK energy infrastructure investments, will work closely with all project partners as a long-term investor.

Project Scope and Location

Five Estuaries Offshore Wind Farm is located approximately 40km off the north Essex and south Suffolk coast. The up to 1,080MW project received development consent in December 2025 following over four years of development. Once operational, it is expected to generate enough electricity to meet the equivalent needs of approximately one million average UK homes annually.

Since the project received development consent, work has been ongoing to further the project design, start early procurement work, and continue engagement with landowners, communities, and other stakeholders.

Partner Statements

Kunal Patel, Partner at Copenhagen Infrastructure Partners, said: "Offshore wind offers the UK a golden opportunity to deploy clean, home-grown energy at scale, to lower and stabilise electricity bills, create highly skilled jobs as well as bolster energy security and deliver economic growth. CIP is delighted to be further expanding our UK investment portfolio through acquiring a stake in Five Estuaries Offshore Wind Farm, and we look forward to working with partners to deliver the project."

Matthieu Hue, CEO of EDF power solutions UK and Ireland, said: "We are delighted to join our partners in the Five Estuaries Offshore Wind Farm project. This project perfectly complements our existing portfolio in the UK and Ireland. We look forward to working closely with our partners and local stakeholders to bring the project online and support the UK's energy independence and security."

About Copenhagen Infrastructure Partners

Founded in 2012, Copenhagen Infrastructure Partners P/S is a global fund manager and leading investor in energy infrastructure. Through its funds, CIP invests in power generation including solar and wind, energy storage, transmission and distribution, advanced bioenergy, low-carbon fuels and carbon capture.

With 15 funds currently under management, CIP is trusted by over 200 of the world's largest and most sophisticated institutions, having raised approximately USD 48.1 billion to date. CIP has projects in more than 30 countries, with a presence on the ground through a network of more than 2,300 professionals.

About the Project Partners

EDF power solutions UK and Ireland is a subsidiary of EDF Group, one of the world's largest low-carbon electricity companies. With an operating portfolio of 50 renewable energy sites, including battery, onshore and offshore wind, the company has an expanding portfolio of wind, battery and solar projects in planning, development and construction, with plans to reach 10 GW by 2035.

ESB was established in 1927 as a statutory body under the Electricity (Supply) Act, 1927. With a holding of 97.1%, ESB is majority owned by the Irish Government, with the remaining 2.9% held by the trustees of an Employee Share Ownership Plan. ESB operates across the electricity market, from generation through transmission and distribution, to supply of customers, in addition to using its networks to carry fibre for telecommunications.

Sumitomo Corporation (TYO: 8053) is an integrated trading and business investment company with a strong global network comprising offices in over 60 countries and regions.

The Sumitomo Corporation Group consists of approximately 500 companies and 80,000 employees on a consolidated basis, with business activities spread across ten groups including Mineral Resources, Chemicals Solutions and Energy Transformation Business.

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