Reliable Power, Wind Variability, and Offshore Grids in Europe Brian Hurley, and Paul Hughes, Airtricity Dr. Gregor Giebel, Ris

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Reliable Power, Wind Variability, and Offshore
Grids in Europe Brian Hurley, and
Paul Hughes, Airtricity Dr. Gregor
Giebel, Risø National Laboratory

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Company Overview

• Founded in 1997
• 250 Employees
• 45,000 Customers
• 200MWs Generation capacity 10 Windfarms by
  December 2004
• Under development and in pipeline 4000GW
• Operations in Republic of Ireland, Northern
  Ireland, U.K., USA, North Sea, and Irish Sea.

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Wind patterns over Europe

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CONTEXT

• Different mix of conventional plant as new
  conventional plant is added.
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• 2. Older conventional plant can be refurbished
  with a view to be used as a cheap form of
  "storage.
• 3. Additional interconnection will be coming
  available inter country and inter regional.
• 4. Specific interconnection of regions to capture
  of the geographical dispersion effect for wind.
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• 5. Intelligent " grid

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Geographical Dispersion Effect
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Wind has Capacity Credit

Source G. Giebel, On the Benefits of Distributed
Generation in Europe, VDI-Verlag 2001
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European average wind power generation between
1965 and 1998, as an average over 60
well-distributed sites
Ref G.Giebel
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Scenarios

• Thames Est.
• Thames Est. Baltic Sea
• Thames Est. Baltic Sea Orkney
• Thames Est. Baltic Sea Orkney Celtic Sea
• Thames Est. Baltic Sea Orkney Celtic Sea
  Trafalgar
• Thames Est. Baltic Sea Orkney Celtic Sea
  Trafalgar Mediterranean
• 7 Thames Est. Baltic Sea Orkney Celtic
  Sea Trafalgar Mediterranean Irish Sea

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Change in Power
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Typical 24Hour Forecast
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Total capital costs at load centres per MWh
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10GW Investigation
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10GW Investigation
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10GW Investigation
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10GW Investigation
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10GW Investigation Conclusion
The addition of the North Sea 10GW power to both
the UK and Netherlands could almost eliminate the
variability entirely. The proportion of the
counts in the 0-100MW bin where there was no
change in power over the 6-hour
interval UK 77 NL 69  
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