A second subsea electricity interconnector to the UK is currently estimated to cost about £200 million, Manx Utilities has confirmed.
The figure has been described as a “high‑level planning” estimate that is likely to change as the project develops.
The cost was disclosed in a written Tynwald answer to Ramsey MHK Dr Alex Allinson, who asked for the latest projection for a potential second link.
Manx Utilities Chair John Wannenburgh said no final investment decision has been taken and the estimate remains subject to feasibility work.
He warned that any eventual price would depend on detailed design, procurement strategy, regulatory requirements, grid‑connection arrangements and market conditions at the time of construction.
He noted that international commodity prices, supply‑chain pressures and wider economic volatility make long‑term forecasting “inherently uncertain”.
Even if approved immediately, the earliest realistic commissioning date would be around 2031, due to development, consenting and construction timescales.
Manx Utilities said additional interconnection capacity forms part of the island’s long‑term energy‑transition planning, alongside renewable generation, storage and wider network investment.
