The Mubadala Investment Company has purchased a $200m (Dh734.5m) portion of Equitix’s stake in Greenlink, the operator of a 504MW subsea electricity interconnector between Ireland and Great Britain.
Greenlink is a joint venture (JV) between Baltic Cable and Equitix.
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The transaction sees Mubadala, a sovereign investor based in Abu Dhabi, United Arab Emirates, expanding its presence in European energy infrastructure.
Equitix chief information officer Achal Bhuwania said: “We are pleased to partner with Mubadala on this investment in Greenlink, which [reflects] our shared focus on high-quality, strategically important infrastructure.”
Completed in February 2025, the Greenlink project consists of a high-voltage direct current (HVDC) subsea cable stretching approximately 190km between Great Britain and Ireland.
The transmission asset has sufficient nominal capacity to supply power to around 380,000 homes. It is regulated by the Office of Gas and Electricity Markets in Great Britain and the Commission for Regulation of Utilities in Ireland.
The project aims to facilitate cross-border electricity flows, enable the integration of renewable energy and improve overall grid flexibility.
Greenlink had received designation from the EU as a Project of Common Interest.
Mubadala’s investment is supported by the project’s regulatory framework, which provides long-term revenue visibility for infrastructure assets considered essential to both the Irish and UK markets.
Mubadala Infrastructure Europe and Middle East and North Africa head Karim El Jazzar said: “This investment reflects our continued focus on high-quality infrastructure assets that are integral to the functioning of modern economies including those enabling more connected and efficient energy systems.
“As power markets evolve, interconnectors are becoming increasingly important in supporting cross-border electricity flows and facilitating the integration of renewable energy and grid stability.
“Our partnership with Equitix delivers on this strategy by strengthening regional connectivity and supporting the energy transition across European markets.”
The development supports Mubadala’s approach of aligning with investment platforms connected to global trends and reflects a focus on energy systems that are efficient and sustainable.
Last month, Mubadala announced a $325m investment in the 2.9GW Hornsea 3 offshore wind farm in the UK.
