Partners Group to sell electricity interconnector linking Great Britain and Ireland

Swiss private equity firm Partners Group has agreed to sell the Greenlink Interconnector, a 504MW subsea electricity interconnector linking Great Britain and Ireland, to Baltic Cable and Equitix.

The transaction values Greenlink at an enterprise value of over EUR1 billion ($1.1 billion). Partners Group acquired a controlling stake in Greenlink in 2019 before taking full ownership in 2021.

"Partners Group has driven value creation at the company, leading it through financial close and construction to initial commercial operations, which was reached on time in early 2025," said the comapny.

"Partners Group was active in securing financing for the project and sourcing top tier suppliers during the construction phase. Greenlink is the first project financed interconnector to be completed in Europe."

Greenlink, which has a nominal capacity that is equivalent to powering around 380,000 homes, consists of two converter stations and two high voltage cables running 190 kilometres under the Irish Sea.

The converter stations and cables connect National Grid’s substation in Pembrokeshire, Wales to EirGrid’s Great Island substation in County Wexford, Ireland.