1 | A Greener Economy | Göran Loman | 2011.02.23

Offshore Wind EnergyKentish Flats ExtensionGöran Loman

Environment Conference, CanterburyA Greener Economy: Time for a Change?

February 23, 2011)

2 | A Greener Economy | Göran Loman | 2011.02.23

Agenda

• Vattenfall

• Wind power technology

• Kentish Flats

• Kentish Flats Extension

- Technical data

- Environmental impact

- Consenting process

- Programme

3 | A Greener Economy | Göran Loman | 2011.02.23

VATTENFALL

4 | A Greener Economy | Göran Loman | 2011.02.23

Vattenfall

Key facts• Owned by the Swedish State• Business

- Electricity: generation, transmission, distribution and sales

- Heat: production, distribution and sales

- Gas: distribution and sales

- Consulting and contracting activities in the energy sector

• Market

- Sweden, Denmark and Finland

- Germany, the Netherlands and Belgium

- The United Kingdom

• Wind power is a cornerstone of Vattenfall’s action on climate change

5 | A Greener Economy | Göran Loman | 2011.02.235

Vattenfall in the UK

• Acquired 90MW Kentish Flats through Elsam merger in 2005

• Acquired AMEC Wind Energy in November 2008

• Acquired Thanet Offshore Wind Energy in November 2008

• Acquired Eclipse Energy in November 2008

• Merger with Nuon in July 2009

6 | A Greener Economy | Göran Loman | 2011.02.23

WIND POWER

In fact it is quite easy

7 | A Greener Economy | Göran Loman | 2011.02.23

The kinetic energy of the wind

Pkin = 0,5 A v3

0

250

500

750

1 000

1 250

1 500

1 750

2 000

0 1 2 3 4 5 6 7 8 9 10

Wind speed, m/s

Po

we

r, k

W

90 ton/second!

8 | A Greener Economy | Göran Loman | 2011.02.23

Production

0%

2%

4%

6%

8%

10%

0 5 10 15 20 25Wind speed, m/s

Fre

qu

ence

0,0

0,5

1,0

1,5

2,0

2,5

3,0

3,5

0 5 10 15 20 25Wind speed, m/s

Po

wer

, MW

Weibull distribution Produktion curve

9 | A Greener Economy | Göran Loman | 2011.02.23

Wind resource, regional and local aspects

100%

125%

75%

Production

0

500 000

1 000 000

1 500 000

2 000 000

01-01-2011 08-01-2011 15-01-2011 22-01-2011 29-01-2011

Dai

ly p

rod

uct

ion

, kW

h

10 | A Greener Economy | Göran Loman | 2011.02.23

Park effects and vertical wind gradient

Vertical wind gradient

0

20

40

60

80

100

120

0,0 2,0 4,0 6,0 8,0 10,0

Wind speed, m/s

Le

ve

l a

bo

ve

su

rfa

ce

Hav

Jordbruk

11 | A Greener Economy | Göran Loman | 2011.02.23

KENTISH FLATS AND THE EXTENSION

12 | A Greener Economy | Göran Loman | 2011.02.2312

Kentish Flats

History

• Was completed in August 2005• At completion, the largest wind farm in the UK• Production corresponds to the consumption of

61,000 average households

Kentish Flats – Key Data

Rated power 90 MW (30 x 3.0MW)

Electricity generation 235 GWh/year

Location – Coast of Kent, England

Wind turbine type (Vestas) V90 / 3.0MWHub height 70 m Rotor diameter 90 mTip height 115 mFoundation type MonopileDepth of water ≈ 5 m (LAT)Distance from shore ≈ 8.5 kmDistance between wind turbines 700 m

Some facts

13 | A Greener Economy | Göran Loman | 2011.02.2313

Kentish Flats Extension

Focal points of EIA for KF2

• Birds - red throated divers• Outer Thames Estuary SPA • Marine navigational safety• Impact to commercial fishermen• Visual impact of additional turbines

•

Additional turbines up to 17Wind turbine type under evaluationHub height up to 85 mRotor diameter up to 120 mTip height up to 135 mCapacity 51 MWProduction 145-185 MWh/a

40,000-50,000 households

Some facts

14 | A Greener Economy | Göran Loman | 2011.02.23

The IPC Process (Applying for a DCO)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

IPC

Acceptance

Pre examination

Examination

IPC recommendation

Secr of State

Decision

Legal challange

Judical Review

M o n t h s

15 | A Greener Economy | Göran Loman | 2011.02.23

Programme for Kentish Flats Extension

2010 2011 2012 2013 2014Project startPre application processApplication handlingProcurementInstallationCompleted

Partly parallel time plan

16 | A Greener Economy | Göran Loman | 2011.02.2316

WWW.VATTENFALL.CO.UK