The move comes after Octopus Energy announced plans earlier this year to invest some $20 billion in the offshore wind industry by 2030, with a stated focus on Europe.
The UK energy supplier now joins other co-owners in the 731.5MW Borssele III & IV project, including Dutch oil major Shell (20%), investment firm Swiss Life Asset Managers (20%), Japanese oil company Inpex (15%) and Dutch energy firm Eneco (10%) among its stakeholders.
Borselle III and IV consists of 77 of Vestas' V164-9.5MW turbines, and is located 22km off the coast of Zeeland in the Dutch North Sea.
Following the sale of its final 10% stake in the wind farm to Octopus Energy, Partners Group has completed its exit from the Borselle III and IV project after initially owning 45% of the wind farm. The firm sold 15% of its stake to global investment company Nuveen Infrastructure in July, after previously selling a 20% stake to Swiss Life Asset Managers in 2022.
Octopus entered the offshore wind market last year and invested around $1 billion in five offshore wind deals.
The company currently has stakes in offshore wind assets of over 2.2GW, according to Windpower Intelligence, the data and research division of Windpower Monthly.
Alongside Borselle III and IV, Octopus Energy also has stakes in the 19MW Borselle V project in the Dutch North Sea, and the 270MW Lincs wind farm off the coast of Lincolnshire in the British North Sea.
Earlier this month Octopus Energy announced investment in Deep Wind Offshore, a Norwegian offshore wind specialist with a pipeline of projects in Norway, Sweden and South Korea.