UK’s First Commercial Scale

Offshore Wind Farm

26th March 2003

NWP Offshore Ltd

Presentation

• Project Overview

• Construction Process

• Progress to Date

• Marking of Wind Farm on Admiralty Charts

• Stakeholder Involvement in Construction Process

Project Overview

• 30 wind turbines, Vestas V-80 2MW • 4-5 miles off Prestatyn / Rhyl •Rectangular Turbine Array

• 800m Separation E-W• 350m Separation N-S

• Cable landfall /grid connection at Rhyl• Output equivalent to annual demand of approximately 50,000 homes

North Hoyle - Main Parameters

Project History• Summer 1999 - Install Monitoring Mast

• December 2000 - Crown Estate Invitation to Bid

• Spring 2001 - Awarded Licence to Develop

• August 2001 - Launch of “Juice”

• February 2002 - Submit Consents Application

• August 2002 - Obtain Consents

• October 2002 - Commence Onshore Works

• Summer 2003 - Offshore Construction

• Late 2003 - First Generation

Wind Farm Construction

Turnkey Contract

• Turnkey contractor is consortium of Vestas Celtic Wind Technology and Mayflower Energy

• Includes 5 year Warranty, Operations and Maintenance provision

Turnkey Contract - Major Suppliers

Wind Turbines - Vestas

Wind Turbine Installation - Mayflower

Monopile Supply - Rheden Steel

Monopile Installation - Seacore

Subsea Cables - AEI Cables

Foundations

• 4m diameter, 275t (max), stored at Mostyn

• Installation by Seacore using Jack-up Barge “Excalibur”

• Pile towed out from Mostyn, lifted to vertical

• Hammer installed, drive to rockhead (10-15m below mudline)

• 3.7m hole drilled through pile, through overburden to required penetration

• Pile driven to required penetration

Photo of Horns Rev Foundation

Progress Update

Progress to Date• Construction plans (Environmental Management

System, Oil Spill Contingency Plan etc) in place for construction phase

• Site establishment at Mostyn

• Onshore Works - Majority Complete

– Sub-station, some cable laying still to be performed

– Directional drill to be performed under sea-wall

Progress to Date• Offshore Works

– Modifications to Seacore installation vessel (in Liverpool) almost complete

– Monopile supply on schedule, currently 8 piles stored at Mostyn

– Piling about to begin

• Project “On Track” for commissioning in late Autumn

Marking of Wind Farm on Admiralty Charts

Construction Phase

Operations Phase

Stakeholder Involvement

• “Safety at Sea” Seminar

– Inform stakeholders of forthcoming activities

– Methods of communication

– Establish points of contact

– Effect of wind farm on aids to navigation

– Safety

– Invite feedback

Stakeholder Involvement

• Invitees included

– Port Authorities

– Commercial vessel operators

– RYA, RNLI, MCA,

– Local councils

– Sailing clubs

– Fisheries consultees

Stakeholder Involvement

• Fisheries Liaison Officer

• Email

– Notice of forthcoming activities

• Web Site

– Progress Updates

Stakeholder Involvement

• davidbean@natwindpower.co.uk

• www.northhoyle.co.uk

Points of Contact