Jan-Christoph HINRICHSResearch Engineer / Load Calculation

Aerodyn engineering gmbh

Reducing CAPEX and OPEX with

SCD nezzy 8.0 MW

Jan-Christoph Hinrichs,

aerodyn engineering gmbh, Büdelsdorf, Germany

Company background

• Independent, private ownedengineering company since 1983

• Overall turbine design fromblade tip to foundation

• 27 designs, 32 000 turbinesand 12.5 % market share

• 4 types of OWT in 5 - 6 MW classsince 2000

Motivation: Current LCoE situation offshore

Turbine3,0

Foundation2,6

Cable0,2Transformer

0,6Installation

1,7

Building Permit

1,0

Reserve1,4

Maintenance & Repair

3.2

Dismanteling0,4

14.2 €cent / kWh~ 22.5 % OPEX!

Acceptable: 10 €cent / kWh

Reachable with nezzy: 8.5 €cent / kWh

Source: Fichtner – Cost Reduction Potential Offshore Wind Power

How to reduce LCoE?

• Increase of AEP• Decrease of CapEx• Extension of lifetime• Decrease of financing costs• Decrease of OpEx

Remember: Small improvements will have a small effect on LCoE !!!

SCD 8.0 MW nezzy concept• Floating wind turbine• Two-bladed rotor• Downwind design• No yaw system• Guyed tower structure• Reduced drag tower shape• Concrete foundation• Light weight drive train• Less installation and

dismantling effort• Smaller footprint • 35 m water depths

Impact on OPEX

• Less turbine parts -> less probability of failure• Keep redundancy• Advanced condition monitoring • Remote service control• Proactive maintenance• Proactive part exchange• 5 year maintenance interval as result• Easy system exchange • Asset sharing• Above 50 km distance to shore sea-based

maintenance station reasonable

Result for SCD 8.0 MW nezzy: 1.4 €cent/kWh O&M cost

Reducing costwith SCD 8.0 MW nezzy :

• light weight SCD-Technology • use of 2 blade downwind rotor• using advantage floating technology• avoiding expensive vessels• minimizing dismantling expenses

by 40 %

Thank you for your attention!

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