The Anonymous Widower

Ørsted Pulls Plug On 2.4 GW Hornsea 4 Offshore Wind Project In UK

The title of this post, is the same as that of this article on offshoreWIND.biz.

This is the sub-heading.

Ørsted has discontinued the development of the UK’s Hornsea 4 offshore wind farm in its current form. The developer said the 2.4 GW project has faced rising supply chain costs, higher interest rates, and increased construction and delivery risks since the Contract for Difference (CfD) award in Allocation Round 6 (AR6) in September 2024.

This introductory paragraph adds more detail.

In combination, these developments have increased the execution risk and deteriorated the value creation of the project, which led to Ørsted stopping further spending on the project at this time and terminating the project’s supply chain contracts, according to the Danish company. This means that the firm will not deliver Hornsea 4 under the CfD awarded in AR6.

Consider.

• Hornsea 4 will be connected to the grid at a new Wanless Beck substation, which will also include a battery and solar farm, which will be South West of the current Creyke Beck substation. Are Ørsted frightened of opposition from the Nimbies to their plans?
• I also wonder if political uncertainty in the UK, and the possibility of a Reform UK government, led by Nigel Farage is worrying companies like Ørsted.

So will factors like these prompt companies like Ørsted to move investment to countries, where they welcome wind turbines like Denmark, Germany and The Netherlands.

Could Ørsted Be Looking At An Alternative?

This is a map of wind farms in the North Sea in the Dogger Bank and Hornsea wind farms, that I clipped from Wikipedia..

These are the Dogger Bank and Hornsea wind farms and their developers and size

• 37 – Dogger Bank A – SSE Renewables/Equinor – 1,235 MW
• 39 – Dogger Bank B – SSE Renewables/Equinor – 1,235 MW
• 38 – Dogger Bank C – SSE Renewables/Equinor – 1,218 MW
• 40 – Sofia – RWE – 1,400 MW
• 1 – Hornsea 1 – Ørsted/Global Infrstructure Partners – 1,218 MW
• 32 – Hornsea 2 – Ørsted/Global Infrstructure Partners – 1,386 MW
• 47 – Hornsea 3 – Ørsted – 2,852 MW
• 51 – Hornsea 4 – Ørsted – 2,400 MW

Note.

1. That is a total of 12, 944 MW, which is probably enough electricity to power all of England and a large part of Wales.
2. Wikipedia’s List of offshore wind farms in the United Kingdom, also lists a 3,000 MW wind farm, that is being developed by German company ; RWE called Dogger Bank South,
3. The Dogger Bank South wind farm is not shown on the map, but would surely be South of wind farms 37 to 40 and East of 51.
4. The Dogger Bank South wind farm will raise the total of electricity in the Dogger Bank and Hornsea wind farms to just short of 16 GW.

Connecting 16 GW of new electricity into the grid, carrying it away to where it is needed and backing it up, so that power is provided, when the wind doesn’t blow, will not be a nightmare, it will be impossible.

An alternative plan is needed!

AquaVentus To The Rescue!

AquaVentus is a German plan to bring 10 GW of green hydrogen to the German mainland from the North Sea, so they can decarbonise German industry and retire their coal-fired power stations.

• I introduce AquaVentus in AquaVentus, which I suggest you read.
• AquaVentus is being developed by RWE.
• AquaVentus connects to a German hydrogen network called H2ercules to actually distribute the hydrogen.

This video shows the structure of AquaVentus.

I clipped this map from the video.

Note.

1. The thick white line running North-West/South-East is the spine of AquaVentus, that will deliver hydrogen to Germany.
2. There is a link to Esbjerg in Denmark, that is marked DK.
3. There appears to be an undeveloped link to Norway, which goes North,
4. There appears to be an undeveloped  link to Peterhead in Scotland, that is marked UK.
5. There appears to be a link to just North of the Humber in England, that is marked UK.
6. Just North of the Humber are the two massive gas storage sites of Aldbrough owned by SSE and Brough owned by Centrica.
7. Aldbrough and Rough gas storage sites are being converted into two of the largest hydrogen storage sites in the world!
8. There appear to be small ships sailing up and down the East Coast of the UK. Are these small coastal tankers, that are distributing the hydrogen to where it is needed?

When it is completed, AquaVentus will be a very comprehensive hydrogen network.

I believe that offshore electrolysers could be built in the area of the Hornsea 4 and Dogger Bank South wind farms and the hydrogen generated would be taken by AquaVentus to either Germany or the UK.

• Both countries get the hydrogen they need.
• Excess hydrogen would be stored in Aldbrough and Rough.
• British Steel gets decarbonised.
• A 1.8 GW hydrogen-fired powerstation at Keadby gets the hydrogen it needs to backup the wind farms.

Germany and the UK get security in the supply of hydrogen.

These may be my best guesses, but they are based on published plans.

May 7, 2025 - Posted by AnonW | Energy, Hydrogen | Aldbrough Gas Storage, AquaVentus, Ørsted, Contracts for Difference Allocation Round 6, Creyke Beck substation, Denmark, Germany, Green Hydrogen, Hornsea Wind Farm, Nigel Farage, Nimbies, Offshore Hydrogen Production, Offshore Wind Power, Reform UK, Rough Gas Storage, RWE, The Netherlands, Wanless Beck substation, Wind Power