Delivery of the first three floating windfarms in the Celtic Sea will be able to generate enough energy to power more than four million homes, deliver £1.4 billion GVA (Gross Value Added) to the production of goods and services in the UK and an average of 5,300 jobs over five years, a new study says.

The independent study - Celtic Seas Blueprint - was commissioned by The Crown Estate‘ and looked at the minimum requirements needed to deliver the first three projects outlined by The Crown Estate in December.

It also examined the gaps, such as ports deep enough for handling the giant turbines, vessels to service the sites, and export cables to transport electricity to land. Addressing these gaps will be critical and with a further pipeline of windfarms expected in the region as well as rising global demand, the opportunities for ports, manufacturers and the wider supply chain could be far greater.

Gus Jaspert, Managing Director of Marine at The Crown Estate commented:

“If the UK is to make the most of the economic and environmental opportunities from the transition to renewable energy, we must be on the front foot, acting now to develop the supply chain capability, skills and infrastructure needed to establish not just these windfarms but future floating windfarms in the Celtic Sea and elsewhere.”

The first three floating windfarms, which will be able to generate up to 4.5GW of electricity, will be some of the largest in the world, and, as the first in the UK outside of Scotland, mark a new phase for offshore wind in England and Wales.

Wales and The South West has the potential to be at the forefront of driving the development, with opportunities from port infrastructure to significant SME support across the supply chain.

In particular, this report highlights opportunities for the region – from the assembly of the large floating platforms needed to house the turbines, to the transport and storage of parts during the construction and life-cycle of the sites. More generally, the first three windfarms alone will need:

• More than 260 turbines spread across the three sites, each some 300 up metres tall, around the same height as The Shard, on a floating platform about the size of a football pitch.
• More than 1000 anchors to secure the floating turbines to the seabed, with at least 300km of mooring lines.
• Nearly 900km of cables (enough to stretch four times the length of Wales / nearly enough to stretch from Lands End to John O Groats) to link up turbines and connect them to the electricity network.

RenewableUK’s Chief Executive Dan McGrail, Co-Chair the Floating Offshore Wind Taskforce said:

“Some of the world’s biggest floating wind farms will be built in the Celtic Sea, with turbines twice as tall as Blackpool Tower, platforms the size of football pitches and hundreds of kilometres of hi-tech cables. We need to ensure that we’re making that massive kit here, by upgrading ports so that we have the capacity to manufacture and assemble these enormous structures. If we don’t seize this opportunity to capitalise on our global lead in floating wind, other countries will do so, as the international race to develop world-class supply chains for this innovative technology is accelerating fast.”

The Crown Estate says it is now focused on bringing key parties together to create an action plan for developing supply chain and infrastructure capabilities in the region and across the UK.

This includes looking at funding and investment options to accelerate supply chain projects, including a pilot £10 million fund from The Crown Estate to support early-stage projects looking to capture some of the opportunities identified in the research.

Identifying the supply chain and infrastructure requirements is part of a series of measures The Crown Estate has taken to evolve its approach in leasing these new sites.

In November 2023, The Crown Estate also welcomed the Government’s commitment in the Autumn Statement to modernise its investment powers. This includes allowing it to borrow for the first time and therefore invest more across its business to have an even greater impact, for example through supporting the continued sustainable acceleration of offshore wind for the benefit of the nation.

On 28th February The Crown Estate launched the formal tender process for the floating wind farms, the first step for developers hoping to bid for a lease.

Click here to download the Celtic Seas Blueprint study in full