1. Wind Farm Design and Engineering Mark Legerton Head of Engineering and Supply Chain April 2010

2. 2 Design objectives Wind farms that are safe to construct and operate. Sympathetic to stakeholder concerns. Minimise cost of energy.

3. 3 Why cost of energy is important Government support Consumer and public support Investment Supply chain

4. 4 The Dogger Bank challenge

5. Dogger Bank - Project economics High wind speeds Shallow seas Economies of scale Standardisation of design Serial production and installation Space for design optimisation

6. Design factors Turbine spacing Array spacing Array shape Distance to shore Water depth

7. 7

8. 8 Dogger Bank – area available

9. 9 Array shape options

10. Fill development area

11. Arrange in discrete arrays

12. Doughnut

13. Multiple doughnuts

14. Doughnut of doughnuts

15. But, design tools not proven

16. 16 Commercial wind turbine growth Source GLGH

17. 17 Foundation options Source GLGH

18. 18 O&M options

19. 19 Need for flexibility in final design Zone award Q1 10 Q4 12 Q4 13 Consent application Consent award 1 st investment decision 2014 Construction 2015 2023 O&M to 2040/65 But according to agreed guidelines and rules

20. Thank you