Crown Estate parcels up gigascale floating wind zones in Celtic Sea to propel key UK play

British seabed landlord maps out first 'areas for search' ahead of flagship tender next year, with eye on development of almost 25GW by 2045 in waters off England and Wales

Map showing the five 'areas for search' spotlighted by the UK Crown Estate in the Celtic Sea for search floating wind arrays
Map showing the five 'areas for search' spotlighted by the UK Crown Estate in the Celtic Sea for search floating wind arraysFoto: Crown Estate

UK seabed landlord the Crown Estate has mapped out five gigascale zones for stepwise development of floating wind arrays in the Celtic Sea, with a view to seeing as much as 24GW online by 2045.

The lead-off ‘areas for search’, to be tendered for 1GW-scale projects via a flagship auction to be launched in mid-2023, build on the trio of arrays – the 100MW Whitecross off the coast of south-west England, and the same-size Llŷr 1 and 2 off Wales – that cleared a major hurdle last year on the way to construction with approval for “technical competence”.

Head of marine new ventures at the Crown Estate, Nicola Clay, said: “The focus in our current programme on delivering the proposed 4GW of floating wind power represents a phased approach, which will provide important lessons at each stage to support and enable the future growth of the sector.

“It gives visibility to a long-term pipeline that will support investment in the regional supply chain and infrastructure, contribute significantly to UK energy security, and help projects in the Celtic Sea reach a scale where they can become more cost-competitive.”

“This proposed leasing round will play a key role in realising green energy ambitions in the Celtic Sea. Separate new research commissioned by The Crown Estate indicates that the Celtic Sea has the economic potential to accommodate up to an additional 20GW of floating offshore wind capacity by 2045,” said the Crown Estate, in a statement.

“The Celtic Sea leasing opportunity will also give developers the option to incorporate innovations such as green hydrogen production, using renewable energy from the offshore floating windfarms, into their projects.”

The areas for search were identified based on “a variety of factors”, according to the Crown Estate, including navigation routes, fisheries activity and environmental sensitivities. “By balancing these and other factors, and incorporating feedback from stakeholders, [these zones] have been assessed as the most favourable locations for floating wind and those most likely to be deliverable in the near term, accelerating secure domestic energy.”

Developer Blue Gem – a joint venture between TotalEnergies and Simply Blue – in 2020 won the rights to develop the 96MW Erebus demonstration project, with an eye to bringing the flagship array into operation in the Welsh Celtic Sea in 2025-26.
Since, several other projects have moved forward in the region, including the 40MW TwinHub being built off UK by Hexicon and Bechtel off the UK southwest. Most recently, new-model offshore wind developer Corio Generation expanded its international portfolio ambitions with plans to bid to build floating arrays in the Celtic Sea with specialist outfit Morwind.
The UK government considers how to progress on the national offshore wind target set in April of having 50GW turning by 2030 including 5GW of floating arrays.
DNV calculates floating wind projects currently make up over 15% of the total offshore wind deployment in the pipeline for switch-on by mid-century, some 264GW of the 1,748GW slated to be installed.
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Published 5 July 2022, 03:03Updated 5 July 2022, 13:38
Crown EstateCeltic SeaUKWales