OFFSHORE WIND Economies of scale, engineering ... - CiteSeerX

Item Sub-item Unit rate [£k] UK Round 1 Project
Unit Quantity Cost [£k] Subtotals [£k]
Development expenses
PR 250 Project 1 250
Environmental Impact Assessment (incl. EIS) 1,000 Project 1 1,000
Consenting 250 Project 1 250
Wind monitoring 500 Project 1 500
Site surveys (geophys, etc.) 250 Project 1 250
Technical and commercial management 500 Project 1 500
Preliminary and management works
Further site surveys 500 Project 1 500
Construction management 2,000 Project 1 2,000
Insurances 2,000 Project 1 2,000
Financing costs 2,000 Project 1 2,000
2,750 2%
6,500 5%
Wind turbine, transformer and tower supply 1,600 Turbines 30 48,000 48,000 40%
Foundation supply 1.50 Ton. Steel 15000 22,500 22,500 19%
Offshore electrical supply
On-site 33kV submarine cables (incl. comms) 0.15 m 15000 2,213
Site-shore 33kV submarine cables (incl. comms) 0.18 m 30000 5,250
Offshore substation 5,000 substation 0 -
Wind farm monitoring system supply
SCADA system 25 Turbines 30 750
Instrumented met mast and foundation 400 Mast 1 400
Installation
Onshore electrical works
Mob and demob 75 Days 10 750
Foundations and met mast 75 Days 120 9,000
Wind turbines 75 Days 60 4,500
Cable lay 45 Days 100 4,500
Seabed prep and scour protection 100 Turbines 30 3,000
Weather downtime 20% 4,350
Cabling 300 km 3 900
Grid Connection Agreement 5,000 Project 1 5,000
7,463 6%
1,150 1%
26,100 22%
5,900 5%
Grand total 120,363 100%
Specific cost per installed MW 1,204
Cost breakdown
Calc sheet rev B.xls
10/12/2003