Technical Advisor’s Floating Offshore Wind · The Renewables Consulting Group Floating Offshore...

The Renewables Consulting Group Floating Offshore Wind Seminar

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Technical Advisor’s Floating Offshore Wind

Overview and Key focus Points

06 June 2019 - Paris

https://thinkrcg.com/


About the firm Our guiding principles. . .

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The Renewables Consulting Group

• Founded in early 2015 in London and New York.

• We are a specialized expert services firm, focused solely on the global renewable energy industry.

• We support mainstream and emerging energy technologies serving the organisations leading the transition to a low carbon economy.

• 50+ expert staff across 9 global locations.

• Unique value proposition combining strategy consulting with technical advisory.

• Our success is based on building relationships and client results – over 90% of our business comes from repeat client engagement.

15 yrsAverage staff

industry experience

92%Repeat client

engagement rate

65%Staff with advanced

level degrees

48%Civil, electrical or

mechanical engineers

52%Natural sciences, MBA,

economics, law

Respect & Diversity Investing in the Future Practical Approach to Excellence

Clients First Integrity & Confidentiality Teamwork & Passion

• Put clients’ interests first.

• Committed to delivering the

highest quality support.

• Model professionalism in every

assignment.

• Trust is important to us.

• Interacting honestly, ethically,

safeguarding clients’ confidential

information.

• Building productive relationships

that endure.

• Operating as one team, built on

shared principles.

• A passion to out-perform.

• Harnessing our collective energy

to deliver outstanding work.

• True innovation comes from

people at every level.

• Wide range of backgrounds.

• Treat everyone as worthy of our

attention and respect.

• We provide solutions needed for

transition to a low carbon future.

• We invest in growth and talent.

• Aim to create the next generation

of experts.

• Sleeves-rolled-up approach to

getting the job done.

• We get to know our clients and the

task.

• Our experts provide straightforward

advice to deliver the best solution.

Types of FOW Concepts Key Focus Areas MarketFOW OriginsIntroduction to RCG


The Renewables Consulting Group Floating Offshore Wind Seminar 2

Main office locations

Taipei

New York

GlasgowLondon

San Francisco Tokyo

London

Gilmoora House

57-61 Mortimer St.

Fitzrovia

London, W1W 8HS

UK

Amsterdam

Gustav Mahlerplein 2

1082 MA

Amsterdam

The Netherlands

New York

433 Broadway

6th Floor

New York

NY 10013

USA

Glasgow

Inovo

121 George Street

Glasgow

G1 1RD

Scotland

Taipei

Hsin Ji Centre

18F, No,460. Sec. 4,Xinyi

Rd., Xinyi Rd Dist,

11052 Taipei,

Taiwan

AmsterdamDublin

San Francisco

595 Pacific Ave F4

San Francisco

CA 94133

USA

Barcelona

Avenida Diagonal 640, 6ta

planta,

08017 Barcelona

Spain

Barcelona




Solar

Emerging Energy

Technologies

Wind

(Onshore & Offshore)

We come from the industries we serve, and understand the issues and opportunities unique to renewable energy projects

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Wave & Tidal

Energy Storage

High Altitude Wind


https://www.google.co.uk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0ahUKEwiiy4ibq9HTAhWkAMAKHRM_AjIQjRwIBw&url=http://vector.me/search/kitesurf&psig=AFQjCNHorI4E2u0ICS9xAvRLk1w8LtD8GQ&ust=1493818890799581&cad=rjt



Our value proposition integrates market intelligence, management consulting and technical advisory services

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ThinkMarket

Intelligence

ThinkManagement

Consulting

ThinkTechnical

Advisory

1 2 3

Data Services

Market Analysis

Modelling and Forecasting

Corporate Strategy / Go-to-market

Custom Research

Public Affairs

Development Services

Independent Engineering

Due Diligence




RCG Technical Advisory

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Best in class technical advisors = Great Experience

•40+ years LTA experience (Led 15+ and involved in 25+ project finance transactions).

•Involved in tens of M&A transactions.

•Pre-FC transaction / Operational Portfolios / Refinancing.

Unique development expertise

•Perfect fit for green field transactions (state of the art).

•Executive focus.

Multi-asset knowledge

•Offshore wind

•Onshore wind

•Solar PV

Bankability Firsts

•New Technologies (WTGs, foundations, substations…)

•New Strategies (O&M,…)

•New Suppliers

Bank grade Energy Yield capabilities

•Wind (onshore and offshore) and Solar PV

•Layout optimisation.

•Pre-construction and Operational Yield

Mostly senior staff

“Been there, done that”




Floating Offshore Wind

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Image: Equinor



Flashback Offshore (fixed bottom) Wind Origins

Onshore Wind

Oil and Gas

Marine

Fixed Bottom

Offshore Wind

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• WTG Technology

• Electrical

infrastructure

• Consenting work


• Marine Design

• Site conditions (climate

and geotechnical)

• Materials performance

• Marine operations


• H&S culture

• Manufacturing

processes (welding,

installation vessels…)

• Facilities




Where does FOW Come From?Déjà Vu

Fixed Bottom

Offshore Wind

Oil and Gas

MarineFloating Offshore

Wind

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• Supply Chain

• Site conditions

(climate and

geotech)

• WTG Technology

• Electrical

infrastructure

• Consenting work

Δ Offshore fixed bottom

to FOW

<Δ Onshore to

Offshore fixed bottom


• Floating particularities

o Site conditions

o Materials

performance

o Marine operations

• Design (Hull, stability,

…)

• Facilities


FOW is not

Reinventing

the Wheel



Fixed Bottom Offshore Wind & O&G Legacy

» Fixed-bottom offshore wind:

– Many different items are directly transferable.

– All similarities apply to the different types of FOWsubstructures.

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Electrical BoP

~WTGWind Resource

Soilinvestigations

Wave climates

Main export cable+ burial methods

Onshore infrastructure

Consenting

O&M Access

» O&G:

– Floating design transferable.

– First floater: 1975 (circa 35 years track record).

– ~100 units installed worldwide.



Floating Offshore Wind Foundations – Sub-elements

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Rotor Nacelle

Assembly (RNA)

Tower

SubstructureFoundation

Mooring Lines

Anchors

Image: NREL




Types of FOW foundations

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Image: WindEurope



Snapshot on Key Naval Architecture Terms

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Floater Movements Floater Stability

GM is function of:

»The second moment of area of the waterplane.

»The volume of displacement in metres.

In general, to ensure stability:

»CG close to CB.

»Large waterplane area away from centre.


Images: TUMST

Image: Kim and Tram, 2015

Images: Barrett, 2019



Types of FOW Foundations - Particularities

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Spar BuoyFloater / Semisubmersible

(and Barge)

Tension Leg

Platform (TLP)


Image: NREL



Comparison of FOW Types

» 30+ Concepts

developed through

tank testing.

» No “one fits all

approach” as with

fixed bottom, but

increased flexibility

with each concept.

» Site-specific

selection required.

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The table above provides an overview of the characteristics of different foundation types, taking a concept-level view (and acknowledging that

specific concepts may score differently under each category). Additional details can be discussed/disclosed upon request.


Metric Spar Semi-Sub TLP

Description Weight-buoyancy

stabilized structure

with large draft

Free-surface stabilized

structure with shallow

draft

Tension restrained

structure with

relatively shallow draft

Stability in operations and motions

Structural Material Weight

Fabrication complexity

Seabed Footprint

Sensitivity to soil conditions

Mooring and anchor requirements

Assembly Constraints

Transport and Installation Constraints

Transport Complexity

Stability During Installation

G A G

A R G

A R A

R R G

G G R

G A R

A G G

R G G

G G A

G G R



Key Focus AreasParticularities of FOW vs FbOW

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Criteria- Low concern items (Green)- Medium concern items (Amber)- High concern items (Red)- Benefits/Upsides (Blue)Note that a concern (or focus area) becomes a risk if it is not properly mitigated following a detailed technical DD

OSS Foundation Design

WTG Controller(WTG tower design)Measurement

campaign with Floating LiDAR

Soilinvestigations

Wind & wave interaction becomes key

Dynamic IAC(+Wet Storage)

Sub-sea Consenting

Access/Egress(12 DOF)

Floater Design (IP)

Mooring and Anchor Design & reliability

WTG and Foundation coupled design

Benefits vs FbOW:- Standardisation- Serial Fabrication- No need for JUV

Re-shuffle installation processFloat between activitiesKnock-on impacts

Dynamic EC

Additional Challenges:

Major component O&M(individual and array approach)

Plug & Play- Fabrication facilities constraints.

- Understanding of Wakes.- Additional yield losses (e.g.

mooring line failures)



New Design Challenges

» Similar loading, but:

– Floating environment – Buoyancy!

– Interaction Substructure – WTG – Moorings

• Watch out for “WTG Agnostic concepts”

– Optimisation from Demo to Commercial

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Hywind Demo with the floater motion

controller (Cruz and Atcheson, 2016)

Hywind: Scale from demo

to pre-series (Equinor)


Image: NREL



New Electrical Designs

» Similar power export demands as fixed bottom offshore wind, but:

– Dynamic cable designs against Extreme & Fatigue loading

• Array Cables.

• Export Cables (limited market!)

– Cable Connections (plug & play)

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MacArtney 11 kV amp "wet mate" connector



Fabrication & Optimisation

» Sites – Potential bottleneck!

– All solutions can leverage from the O&G and naval supply chain.

– Partial leverage from existing fixed-bottom offshore wind supply chain.

» Optimisation

– Potential reduction ofconservatisms from O&Grobustness (risk is lower from environmental and human point of view).

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Image: Equinor Image: Equinor Image: Principle Power

Image: Equinor Image: EquinorImage: MacGregor



Image: Equinor

Mooring & Anchoring

Power Cables

Installation / Marine Operations

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Assembly Transport Hook-up Ballasting Commissioning

Metric Spar Semi-Sub TLP

Onshore Assembly & Harbor Constraints - Draft

Onshore Assembly & Harbor Constraints - Space

Foundation Transport and Installation

Cable installation

Hook-up Complexity

R A A

A R A

A G A

A A A

A A A

General challenges:

• Payment milestones vs

PCR

• Cable (& Grid)

installation ahead of

foundation installation

• Safe heavens during

transport and

installation are likely to

be scarce.

Foundation

+

RNA




Commercial Considerations

» New baseline from fixed bottom industry standard contract terms:

– Liquidated Damages.

– Liabilities caps.

– Warranties

• Defect Notification Periods: Extension?

• WTG: Power Performance (particularly with controller changes)

» Deeper focus on:

– Interfaces.

– Scope

– Test on completion

– Inspection and quality assurance

– Termination (considering IP)

» Potential new risk mitigation strategies:

– Risk-sharing mechanisms with designer (as in FbOW)

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EPCI

• Risk wrap

• Limited contractors

Multi-contracting

• Control over suppliers.

• Limited supply chain




O&M for Major Components

» Major (usually heavy) components repairs or exchanges, including WTG elements such as

blades, main bearings, generators, yaw and pitch systems…, involve complex lifting operations.

» Fixed Bottom Offshore Wind [Fixed to Fixed]

» Floating Offshore Wind [Floating to Floating = 12 DoF]

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Failure identification

Planning & mobilisation

Hook-down & de-ballasting

Transport to harbor

RepairTransport to

SiteHook-up & ballasting

Re-commissioning

Failure identification

Planning & mobilisation

RepairRe-

commissioning

Main challenges

• WTG Downtime & availability losses.

• Warranties

• Plug & Play cable connectors

• Array connections should a WTG be removed

Detailed Cost-Benefits analysis need to be run to

quantify best O&M strategy.


Image: Ziton



FOW Market Potential

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Likely Markets

Island Communities

Other


Images: NASA, NREL, WorldMapsOnline



FOW Footprint & Track Record

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= Potential key

market in the 2020s

Demo Site

Pre-Series Site

Proposed Commercial Site

Operational Experience:

» Hywind Scotland (Equinor):

– Hurricane Ophelia (Oct-17): wind speed of 125 km/h.

– Storm Caroline (Dec-17): wind gusts > 160 km/h and waves > of 8,2 m.

» Windfloat Demo (Principle Power)

– Survived waves > 17m

» Track Record:

– 15 floaters currently in the water (and 1 decommissioned).

– 1 pre-commercial site installed (5 units)

– 5 pre-commercial projects being built/developed




Key Take-Away Points

» FOW is NOT reinventing the wheel

– But challenges need to be well understood.

» Focus on FOW specific issues is required as part of the technical DD.

– Concern / Focus areas only mean risks if they are not properly mitigated.

» High potential for larger WTGs.

» Decoupled from seabed

– Potential standardisation and serial fabrication.

» FOW opens high wind resource areas in deep water but close to shore.

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Market leading insights, reports and publications for the global renewable energy sector

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@thinkRCGby The Renewables Consulting Group

» Latest thought leadership, insights and

events published on RCG website

» Staying connected with our clients

through Twitter, LinkedIn, YouTube

etc.

» Heavy focus on development of new

tools, products and IP.


The Renewables Consulting Group Floating Offshore Wind Seminar 26

Contact Information

Dan Pearson

Managing Director, Head of EMEA

Mobile +44 7785 235 741

[email protected]

Marc Costa-Ros

Associate Director

Mobile +34 617 61 93 04

[email protected]

mailto:[email protected]

mailto:[email protected]


Technical Advisor’s Floating Offshore Wind · The Renewables Consulting Group Floating Offshore...

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