Do British And German Offshore Wind Farm Generate Maximum Power At Different Times
In National Grid, TenneT Germany Launch GriffinLink, A First Of A Find Project To Maximise Offshore Wind, I discussed GriffinLink, which will be an offshore link between British and German offshore wind farms.
Somebody has asked me if wind farms are in phase with each other, as obviously this would effect how they perform and are are controlled.
So I asked Google AI, the question in the title of this post and received this reply.
Yes, British and German offshore wind farms often generate their maximum power at different times, although they are both located in the North Sea and share similar peak seasons. The variations in generation are driven by localized weather patterns, specifically the movement of low-pressure systems.
Key Differences in Generation Times:
Regional Weather Patterns: While North Sea wind farms are often closely correlated, significant differences arise when weather systems move from west to east. Wind often hits the UK’s North Sea sites first, meaning they may hit maximum generation capacity hours before German or Danish sites, which are further east.
Time of Day (Diurnal Differences): Because UK wind farms are located in the Irish Sea, the Scottish coast, and the North Sea, they can exhibit different diurnal (daily) peak times compared to German sites in the North Sea and Baltic Sea.
Seasonal Peaks: Both countries experience the highest output during winter months (e.g., December). However, during specific, localized, long-lasting high-pressure systems (“Dunkelflaute”), one country might experience a complete drop in wind while the other continues to produce, or vice versa.
Why They Differ:
Geography: The UK’s extensive, spread-out coastline (Irish Sea, Atlantic coast, North Sea) offers a different wind profile than the more concentrated German offshore projects in the North Sea and Baltic Sea.
Correlation Challenges: Research shows that while North Sea countries have similar wind profiles, there is not 100% correlation. Meteorological differences in how wind speeds behave across the North Sea allow for complementary production.
This difference is highly advantageous for European energy security, as it allows for the balancing of intermittent wind power across the region.
The conclusion from Google AI, is almost predicting that GriffinLink will be developed. From my experience of mathematical modelling the cost and financial benefits should be fairly easy to predict.
Will The UK And The Republic Of Ireland Link Their Offshore Wind Farms To Improve Efficiency?
This may seem an obvious idea, especially as UK and Republic of Ireland are heavily interconnected.
So I asked Google AI, the question in the title of this section and received this reply.
Yes, the United Kingdom and the Republic of Ireland are taking significant, active steps to link their offshore wind farms and electricity grids to improve efficiency, increase renewable energy production, and enhance energy security. Following a Memorandum of Understanding (MoU) signed in September 2023, the two countries are collaborating on developing subsea energy infrastructure in the Irish and Celtic Seas.
Here are the key details regarding this cooperation:
Deepened Collaboration: As of March 2025, the UK and Ireland are working on a new data-sharing arrangement to lay the groundwork for directly connecting offshore wind farms to each other’s national energy networks.
Offshore Hybrid Assets (OHAs): The plans include developing offshore hybrid assets, which are subsea cables that directly link offshore wind farms to both countries’ grids, reducing infrastructure costs and maximizing efficiency.
Subsea Mapping & Interconnection: Both nations are mapping the Celtic Sea to identify optimal locations for interconnectors and to improve the interoperability of their grids.
Existing & New Projects: While Ireland’s current interconnection to the UK is limited (approx. 500MW), capacity is planned to increase significantly. Specific projects like Mares Connect (linking North Wales and Ireland) are being developed to provide750MW of additional capacity.
Regional Cooperation: Ireland is also participating in the “Hamburg Declaration” (signed Jan 2026), joining the UK and other North Sea countries to commit to 300GW of offshore wind by 2050 through shared, regional infrastructure.
This cooperation aims to allow Ireland to export its surplus renewable energy during high generation, while benefiting from the UK’s robust grid during lower wind conditions.
Will The UK AndNorway Link Their Offshore Wind Farms To Improve Efficiency?
As we have interconnectors with Norway, I asked Google AI, the question in the title of this section and received this reply.
Yes, the UK and Norway are actively planning and implementing initiatives to link their offshore wind farms and electricity grids to improve efficiency, energy security, and grid balancing. Following a series of agreements, including a major pact in January 2026, the two countries are collaborating on “hybrid” projects that connect offshore wind sites directly to multiple countries.
It does look like that the co-operations between the UK and Germany, Norway and the Republic of Ireland are setting examples that should be copied all over the world.
But then, you should always follow the mathematics.
But somehow, I can’t see President Trump signing any windmill co-operation with his neighbours.
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