DNV GL © 14 October 2020 SAFER, SMARTER, GREENERDNV GL ©
Magnus Ebbesen
14 October 2020
1
Commercializing with confidence
©Equinor
DNV GL © 14 October 2020
Global reach – local competence
150+years
100+countries
100,000+customers
12,000employees
5% R&Dof annual revenue
MARITIME DIGITAL
SOLUTIONS
BUSINESS
ASSURANCE
ENERGYOIL & GAS
Technology & Research
Global Shared Services
DNV GL © 14 October 2020
Trusted voice to commercialize floating wind with confidence
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>97%
Played a role in the majority of the world’s offshore wind projects
>80%
Involved in the majority of offshore wind projects as a certification body
9 projects
Involved in nine floatingwind transactions astechnical advisor
150 years
Experience in managing risks of offshore technologies with experience from wind, oil & gas and maritime projects
>100
Global presence in more than 100 countries with floating wind experts in key markets
Leadingposition in developing requirments and standards for floating wind turbines.
>10 years
Active in floating wind since the very beginning
>50%
of pilot floating wind farms are designed according to DNV GL’s standard
DNV GL © 14 October 2020
Floating wind – a 10 years journey of standard development
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Hywind Tampen (selected reviews, ongoing)
JIP: Development of
DNV-OS-J103 Design standard
(2011-2013)
JIP: Development of
DNVGL-RP-0286
Coupled analysis
(2016-2019)
2018/2019:
DNVGL-SE-0422 DNVGL-ST-0119 DNVGL-RP-0286
Hywind demo (2008)
Pelastar FEED (2013)
VolturnUS – concept (2014)
aerodyn SCD nezzy – concept (2014)
WindFloat Atlantic (2015- 2018)
Hywind Scotland (2015-2017)
Nautilus – concept (2017)
ACS - concept (2014-2015)
Groix & Belle-Ile wind farmProject Cert. (ongoing)
DNV Guideline(2009) 2012 -
2017
2015 - 2019
FLAGSHIP
2020 - 2023
Selected reference projects
DNV GL © 14 October 20205
STRATEGY AND
INVESTMENT SUPPORT
R&D AND
JOINT INDUSTRY PROJECTSDIGITAL TOOLS AND
SERVICES
PROJECT DEVELOPMENT
AND OPERATIONTECHNOLOGY DEVELOPMENT
Advisory Assurance Advisory Assurance
Core areas to service the floating offshore wind industry
DNV GL © 14 October 20206
DNV GL © 14 October 2020
Enablers include:
▪ Larger turbines
▪ Mega-sized projects
▪ Co-locating 3 GW or more projects
▪ More dedicated offshore supply chain
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Offshore wind will generate almost 9% of electricity globally by 2050
DNV GL © 14 October 2020
Simply because there are more deeper water areas available for deploying floating wind
Why floating wind?
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Note: Inland dots depict population density of more than 500, 2000 and 8000 people per km2 with darker shades of grey. Source: IEA analysis developed in collaboration with Imperial College London
Shallow water (10 - 60 m) : Near shore (<60 km) Far from shore (60 - 300 km)
Deeper water (60 - 2000 m): Near shore (<60 km) Far from shore (60 - 300 km)
By 2050 we predict that floating offshore wind projects will have 255 GW of installed capacity, more than 20% of the offshore wind market.
DNV GL © 14 October 2020
Floating wind will generate a fifth of all offshore wind energy by mid-century
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DNV GL © 14 October 202010
© Equinor
3,000 HyWind Tampens by 2050
DNV GL © 14 October 2020
To fully take up the potential, floating wind needs to overcome its major challenges
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COSTS CONFIDENCE+
DNV GL © 14 October 2020
Average cost can come down to EUR 40/MWh
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€40/MWh
in 2050
€65/MWh
in 2030
DNV GL © 14 October 2020
New risks need to be managed
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Increased risk and
cost
New markets
New technologies
New conditions
New players
DNV GL © 14 October 2020
Floating wind projects – Specific challenges
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Market
Electrical• High voltage dynamic cable design
• Array cable disconnection/connection
• Cable fatigue• Floating substation
Substructure and station keeping• Local content requirements• Complex substructure fabrication• Floater motions• Mooring failure
Site and energy• Wind measurements• Seabed constraints (e.g. fishing in project area)
Contracts• Multi-contracting and high contractual interfacing risk
• "Weak" contracts
Organization• Inexperienced developers
• Inexperienced suppliers
Planning and marketenvironment• Lack of experience• New markets• Uncertainty of investors, lenders
• Criticality of timeline (public support schemes, grants, tariffs)
Turbine• Turbine controller• Floating motions• Power curve impact • Turbine reliability
O&M• Substructure maintenance
• Major component change-out
Site
Technology
Installation• Onshore crane capabilities
• Turbine mating• Serial installation
ProjectSiteTechnology
DNV GL © 14 October 2020
Floating wind can leverage experience from bottom fixed wind and oil & gas, but differences need to be assessed
Relevant experience¹
Design and fabrication
WTG (RNA)
Tower
Substructure
Mooring and anchoring
Dynamic cable (array cable)
Floating offshore substation
Dynamic high voltage cable (>66kV)
Export cable
Installation
Mooring and anchoring
Turbine installation/mating
Towing and hook-up
Floating offshore substation
Dynamic cables
Export cables
Operation
Normal WTG maintenance
Heavy WTG maintenance
Substructure maintenance
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¹ Experience from O&G, bottom fixed and floating wind considering volume and similarities
High experience
Medium experience
Low experience
Legend
DNV GL © 14 October 2020
But risks can be managed
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DNV GL © 14 October 2020
How do you reduce and manage risk?
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DNV GL © 14 October 2020
Continue to follow best practice in project development
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Assure relevant
experience in
development
team
Investigate site
with measurement
campaigns
Select “proven”
floater technology
and mature
turbine design
Design according
to respected
industry standards
Choose
experienced
contractors
Have design
(and construction)
certified / verified
Risk
Time
Monitor the initial
performance
Learn from the project
Share experience with the industry
Be prepared for
intervention
Follow-up on
critical path items
(substructure)
Define
interfaces well
DNV GL © 14 October 2020
Fabrication: Thoroughly assess the foundation fabrication process
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Activty Year 1 Year 2Detailed design Fabrication (Nr 1 )Turbine assembly (Nr 1 )Towing and hookup (Nr 1 )Turbine commissioning (Nr 1)
1) Large part of CAPEX 2) Takes time and on the critical path
3) Some differences from existing experience
• More complex than jacket, monopiles and towers
• More units and has to be less costly than ships and oil & gas
structures
4) Local supply chain requirements in a global market
20
%
DNV GL © 14 October 2020
Operation: Thoroughly plan for events in the operational phase
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Major component failure
1-2 events per turbine per lifetime
Cable failure
A total of 43 cable failures have been reported
between 2007-2018 ¹
Mooring line failure
~0.2 events per turbine per lifetime with oil &
gas experience. ²
² E. Fontaine, 2014 (OTC 25273)
¹ Offshore Wind Subsea Power Cables Installation, Operation and Market Trends September 2018
DNV GL © 14 October 2020
Contracts: Thoroughly assess and ideally minimize the contract interfaces
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Anchors
Floating wind Bottom fixed
Turbine
Tower
Floating structure
Mooring
+ installation+ onshore crane
Foundation
Turbine
+ installation
DNV GL © 14 October 2020
Prototypes and project certification
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Objectives
Scope of Work
▪ Site Conditions
▪ Design Basis
▪ ILA (Independent
Load Analysis)
▪ Design
▪ Manufacturing
▪ Testing
▪ Transportation &
installation
▪ Commissioning
▪ Periodic monitoring
Ensure safety and integrity
Assure documentation is in order and complete
Cover critical technical interfaces
Provide independent
review/analysis
System level review
DNV GL © 14 October 2020
SAFER, SMARTER, GREENER
www.dnvgl.com
The trademarks DNV GL®, DNV®, the Horizon Graphic and Det Norske Veritas®
are the properties of companies in the Det Norske Veritas group. All rights reserved.
Thank youThe future is floating
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Magnus Ebbesen, Business Lead, Floating Wind Advisory
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