Scroby Sands Offshore Wind Farm Update 18 April 2002 Anne-marie Coyle

Scroby Sands Update Introduction & Overview  Powergen Renewables portfolio  The wind farm  The site  Background – technical  Background – environmental  Consenting route  Likely conditions  Construction 1 – Contract Strategy  Construction 2 – Installation  That picture – with a difference…  Powergen Renewables portfolio  The wind farm  The site  Background – technical  Background – environmental  Consenting route  Likely conditions  Construction 1 – Contract Strategy  Construction 2 – Installation  That picture – with a difference…

Completed pre 2000 Completed construction in 2000 Construction in 2001 Deucheran Hill Siddick Bessy Bell Siddick Lowca Askam Rhyd-y-Groes Rheidol Tursillagh St Breock Bowbeat Blyth Offshore Great Eppleton Out Newton Ovenden Moor Royd Moor Blood Hill Powergen Renewables Existing Portfolio Scroby Sands Update

Scroby Sands Offshore Wind Farm  Up to 38 2MW wind turbines  Steel monopile foundations - location specific  3 export cable runs totalling 27km plus 11km cable run  Onshore works winter 2002  Offshore works summer 2003  Visitors Centre  Up to 38 2MW wind turbines  Steel monopile foundations - location specific  3 export cable runs totalling 27km plus 11km cable run  Onshore works winter 2002  Offshore works summer 2003  Visitors Centre

Scroby Sands Update Scroby Sands - the site  Scroby Sands - 3km x 12km dynamic bank system  North Middle and South Banks  Average depth approx 3m - 12m  2m tidal range  Up to 3 knot tides  Sand, sandy gravel and clay  Best weather window April - September  Scroby Sands - 3km x 12km dynamic bank system  North Middle and South Banks  Average depth approx 3m - 12m  2m tidal range  Up to 3 knot tides  Sand, sandy gravel and clay  Best weather window April - September

Scroby Sands Update Background - Technical Studies  Site assessment commenced in  Anemometry mast installed 1995  Good port facilities at Great Yarmouth  Grid connection survey and evaluation  Seismic, bathymetry and test bore studies  Metocean data collection  Export cable route planning  Site electrical infrastructure  Detailed foundation design  Site assessment commenced in  Anemometry mast installed 1995  Good port facilities at Great Yarmouth  Grid connection survey and evaluation  Seismic, bathymetry and test bore studies  Metocean data collection  Export cable route planning  Site electrical infrastructure  Detailed foundation design

Scroby Sands Upadte Background - Environmental Studies  Seals and Birds  Benthic assessment  Fisheries assessment  Sand bank and coastal geomorphology  Wave climate  Marine archaeology  Noise assessment  Navigation, traffic and shipping  Aviation, television, radio and radar  Seals and Birds  Benthic assessment  Fisheries assessment  Sand bank and coastal geomorphology  Wave climate  Marine archaeology  Noise assessment  Navigation, traffic and shipping  Aviation, television, radio and radar

Scroby Sands Update Consenting Route  Crown Estate prequalification in April 2001  DTLR - Section 34 Coast Protection Act 1949  DEFRA - Section 5 Food and Environment Protection Act 1985  DTI - Section 36 Electricity Act 1989 incorporating General Permitted Development Order  Crown Estate prequalification in April 2001  DTLR - Section 34 Coast Protection Act 1949  DEFRA - Section 5 Food and Environment Protection Act 1985  DTI - Section 36 Electricity Act 1989 incorporating General Permitted Development Order

Scroby Sands Update Likely Conditions DEFRA  Installation Sequence  Birds  Seals  Benthos  Subsea vibration monitoring  Coastal processes  Beach profiles  Geomorphology  Scour DEFRA  Installation Sequence  Birds  Seals  Benthos  Subsea vibration monitoring  Coastal processes  Beach profiles  Geomorphology  Scour DTI  Noise  Hours of work  Micrositing  Colour  TV & radio surveys  CAA DTI  Noise  Hours of work  Micrositing  Colour  TV & radio surveys  CAA DTLR  Cables  Navigation aids DTLR  Cables  Navigation aids

Scroby Sands Update Construction 1 - Contract Strategy Supply Grid connection All Cables Supply Grid connection All Cables Install Onshore cables Install Onshore cables Supply Turbines Monopiles WTG switchgear SCADA Supply Turbines Monopiles WTG switchgear SCADA Install Monopiles Turbines Offshore Cables SCADA WTG switchgear Install Monopiles Turbines Offshore Cables SCADA WTG switchgear EPC PROWL

Scroby Sands Update Construction 2 - Installation  Constrained by Little Terns  Avoid southern most row until end July  Piles South to North  Turbines North to South  Cabling  Commissioning  Constrained by Little Terns  Avoid southern most row until end July  Piles South to North  Turbines North to South  Cabling  Commissioning

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